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CN101185259A - 用于多天线通信系统中的波束形成反馈的系统和方法 - Google Patents

用于多天线通信系统中的波束形成反馈的系统和方法 Download PDF

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CN101185259A
CN101185259A CNA2006800181867A CN200680018186A CN101185259A CN 101185259 A CN101185259 A CN 101185259A CN A2006800181867 A CNA2006800181867 A CN A2006800181867A CN 200680018186 A CN200680018186 A CN 200680018186A CN 101185259 A CN101185259 A CN 101185259A
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eigenbeam
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H·桑帕斯
A·汉德卡尔
D·A·戈尔
A·戈罗霍夫
T·卡德斯
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Abstract

公开了基于信道资源确定是否进行针对特征波束信息的反馈以及反馈量的方法和装置。此外，还公开了基于信道信息和信道信息的变化，确定是否进行针对特征波束信息的反馈以及反馈量的方法和装置。

Description

用于多天线通信系统中的波束形成反馈的系统和方法
技术领域
本文件一般涉及无线通信，特别涉及用于无线通信系统的特征波束形成(eigen-beam forming)。
背景技术
正交频分多址(OFDMA)系统使用正交频分复用(OFDM)。OFDM是将整个系统带宽划分为多个(N个)正交频率子载波的多载波调制技术。这些子载波也可称为音调(tone)、频段(bin)以及频道。每个子载波与可调制有数据的相应子载波相关联。在每个OFDM符号周期中，可在全部N个子载波上发送多达N个调制符号。使用N点快速傅立叶逆变换(IFFT)将这些调制符号转换到时域，以生成包含N个时域码片或者采样的变换符号。
在跳频通信系统中，在不同的时间间隔期间，数据在不同的频率子载波上进行发送，其中所述时间间隔可称为“跳变周期”。可以通过正交频分复用、其它多载波调制技术或者某些其它技术提供这些频率子载波。通过跳频，数据传输以伪随机方式从一个子载波跳变到另一个子载波。这种跳频提供频率分集，并且使数据传输能够更好地抵制有害路径效应，例如窄带干扰、抖动、衰落等等。
存在于大多数通信系统中的一个问题是接收机位于接入点所服务的区域的特定部分。在这种情况下，当发射机具有多个发射天线时，不必为了在接收机处提供最大功率而对从每个天线提供的信号进行合并。在这种情况下，在对接收机处接收的信号进行解码时可能出现问题。解决这些问题的一种方法是使用波束形成。
波束形成是一种利用多个天线改善无线链路信噪比的空间处理技术。一般地，可在多天线系统中的发射机或者接收机处使用波束形成。波束形成在改善信噪比方面提供多种好处，从而进一步改善接收机对信号的解码。
某些类型的OFDMA系统是频分双工(FDD)OFDMA系统。在这些FDD OFDMA系统中，从接入点到接入终端以及从接入终端到接入点的传输占用不同的独立频段。在FDD OFDMA系统中，用于进行波束形成的反馈通常需要在发射机(例如接入点)处具有对信道的了解，如果没有足够的反馈则不能获得这种了解。这种反馈通常采用实际波束形成权重或者向量的形式，其需要大量的控制或者信令信道资源。这降低了数据速率并且增加了所需的开销。
因此，希望提供用于更正确地进行波束形成的反馈，同时使从接收机向发射机提供反馈所需的资源最小化。
发明内容
在某些实施例中，基于对可用反向链路传输资源的确定，确定被分配用于进行波束形成信息传输的可用反向链路传输资源。在某些实施例中，这可由处理器或者其它模块执行。另外，在某些实施例中，将该信息作为指令而在空中传输。
在特定的实施例中，基于信道信息确定是否从至少一个天线发送特征波束信息。在某些实施例中，信道信息可以是信道统计或者二阶信道统计。在其它实施例中，信道信息可以是即时信道信息。
应当理解，通过下面的详细描述，本领域技术人员将可以清楚地了解到本发明的其它方案，其中，以说明性的方式示出并描述本发明的示例性实施例。应当意识到，在不脱离本发明范围的前提下，所公开的实施例可包括其它不同的实施例和方案，并且其若干细节可以包括在多个方面的修改。
附图说明
通过以下做出的详细描述并结合附图，本发明的特性、属性和优势将更明显，在附图中，相同的参考标号进行相应的标识，其中：
图1示出根据一个实施例的多址无线通信系统；
图2示出根据一个实施例用于多址无线通信系统的频谱分配方案；
图3示出根据一个实施例的无线通信系统中的接收机所经历的特征波束的示意性框图；
图4示出根据一个实施例的多址无线通信系统中的发射机和接收机；
图5示出根据一个实施例的多址无线通信系统中的发射机系统的框图；
图6示出根据一个实施例的多址无线通信系统中的接收机系统的框图；
图7示出根据一个实施例确定被分配用于提供特征波束反馈的资源的流程图；
图8示出根据另一个实施例确定是否提供特征波束反馈的流程图；
图9示出根据另一个实施例生成特征波束向量的流程图；以及
图10示出根据一个实施例生成特征波束反馈的流程图。
具体实施方式
参考图1，示出根据一个实施例的多址无线通信系统。多址无线通信系统100包括多个小区，例如，小区102、104和106。在图1的实施例中，每个小区102、104和106可包括接入点150，其包括多个扇区。多个扇区可由多组天线形成，每组天线负责在小区的一部分中与接入终端进行通信。在小区102中，天线组112、114和116分别对应于不同的扇区。在小区104中，天线组118、120和122分别对应于不同的扇区。在小区106中，天线组124、126和128分别对应于不同的扇区。
每个小区包括可与每个接入点的一个或多个扇区通信的多个接入终端。例如，接入终端130和132与基站142通信，接入终端134和136与接入点144通信，接入终端138和140与接入点146通信。
从图1可以看出，每个接入终端130、132、134、136、138和140位于其各自小区内与同一小区内的每个其它接入终端不同的部分处。另外，每个接入终端可能和正在与之进行通信的相应天线组相距不同的距离。由于上述两个因素以及由于小区中的环境和其它状况，会出现以下情况，即，导致在每个接入终端和正在与之进行通信的相应天线组之间出现不同的信道状况。
如本文所使用的，接入点可以是用于与终端进行通信的固定站，也可称为基站、节点B或者某些其它术语，以及包括基站、节点B或者某些其它术语的某些或者全部功能。接入终端也可称为用户设备(UE)、无线通信设备、终端、移动台或者某些其它术语，以及包括用户设备(UE)、无线通信设备、终端、移动台或者某些其它术语的某些或者全部功能。
参考图2，示出了用于多址无线通信系统的频谱分配方案。在T个符号周期以及S个频率子载波上分配多个OFDM符号200。每个OFDM符号200包括T个符号周期中的一个符号周期以及S个子载波中的一个音调或频率子载波。
在OFDM跳频系统中，可将一个或多个符号200分配给一个给定的接入终端。在图2所示的分配方案的一个实施例中，将符号的一个或多个跳变区域(例如跳变区域202)分配给一组接入终端，以在反向链路上进行通信。在每个跳变区域内，可对符号的分配进行随机化，以降低潜在的干扰并且提供抵制有害路径效应的频率分集。
每个跳变区域202包括可被分配给一个或多个接入终端的符号204，所述接入终端与接入点的扇区进行通信并且被分配到该跳变区域。在每个跳变周期或帧内，跳变区域202在T个符号周期以及S个子载波内的位置随着跳变序列而变化。另外，对于每个跳变周期，在跳变区域202内对各个接入终端进行的符号204的分配可能并不相同。
跳变序列可以伪随机地、随机地或者根据预定序列来为每个跳变周期选择跳变区域202的位置。用于同一接入点的不同扇区的跳变序列可被设计为彼此正交，以避免在与同一接入点进行通信的接入终端之间发生“小区内”干扰。此外，相对于相邻接入点的跳变序列，每个接入点的跳变序列可以是伪随机的。这可有助于使与不同接入点通信的接入终端之间的“小区间”干扰随机化。
在FDD通信系统中的反向链路通信的情况下，频率子带1至S不会与前向链路的子带1至S中的任意子带相互重叠。在反向链路中，可将跳变区域202的某些符号204分配给可从接入终端发送至接入点的导频符号。在一个实施例中，对于导频符号的符号204分配应当支持空分多址(SDMA)，在SDMA中，由于在扇区或者接入点处存在多个接收天线，如果有对应于不同接入终端的足够的空间信号差别，则就可分离在同一跳变区域上重叠的不同接入终端的信号。
应当注意，虽然图2描述了具有七个符号周期长度的跳变区域200，但是跳变区域200的长度可以是任意所期望的值，并且其大小可以在跳变周期之间或者在一个给定跳变周期内的不同跳变区域之间有所变化。
同样，应当注意，虽然图2的实施例是参考块跳变来描述的，但是，块的位置不必在连续的跳变周期之间发生改变。
参考图3，示出根据一个实施例的在无线通信系统处所经历的特征波束的示意性框图。发射机300(其可以是接入点)在用于接收机304(其可以是接入终端)的一个给定跳变周期内发送多个符号。发射机300所发送的信号从天线302a、302b、302c、...、302t进行发送，并由接收机304在天线306a、306b、...、306t处进行接收。这形成了发射机200和接收机304之间的MIMO信道。在从发射机300向接收机304发送符号过程中，发射机300对符号进行特征波束形成。特征波束形成是一种组合了波束形成、分集和空间复用增益的技术，其使用特征向量根据符号被发送时所经由的天线对符号传输进行乘法、相位偏移和/或幅度偏移。
在一个实施例中，发射机300从天线302a、302b、302c、...、302t发送导频符号，接收机304使用导频符号估计下行链路信道以及计算其相关矩阵。然后，接收机304对相关矩阵进行特征值分解，以及向发射机300提供关于特征向量的信息。在某些实施例中，接收机304确定哪种特征向量波束模式将产生最高的信噪比(SNR)或者其它希望的信号特征，并且向基站发送该信息，其中该基站可使用该特征向量信息对在后续传输中到该移动台的数据信号传输进行波束形成。
如图3所示，特征波束可在不同方向具有多个(本地)最大值308a、308b和308c。其它特征波束可在其它方向具有310a和310b，但其所具有的幅度低于具有最大值308a、308b和308c的特征波束的幅度，如在接收机304处所接收的。此外，辐射模式以及具有最大值的那些特征波束可能随着时间的流逝，根据信道状况、接收机位置或者其它因素的变化而发生变化。
为了提供足够的信息用于在发射机300处进行特征波束形成，接收机304向发射机300提供关于特征向量的反馈信息。在一个实施例中，基于信道状况提供反馈。例如，在一个实施例中，如果信道状况基本未发生变化，则可提供反馈。在其它实施例中，如果信道状况近期发生变化，则可提供反馈。在附加实施例中，如果信道状况经常发生变化，可以不提供反馈或者提供最小的反馈。在其它实施例中，如果信道状况最近发生变化或者信道状况基本不发生变化，则可提供反馈。在某些实施例中，可以通过信道统计、即时信道信息或者信噪比的变化来确定信道状况的变化。
在一个实施例中，反馈可以包括在接收机304处针对接收机304所经历的主要特征波束而计算的特征向量。在某些实施例中，根据码本对关于主要特征波束的特征向量的信息进行量化，然后，将量化比特发送至包括用于读取量化比特的码本的发射机302。
在一个实施例中，量化比特基于码本与主要特征波束或者主要波束与其它特征波束之间的最小均方差。
接入终端所提供的反馈被用于形成初步波束形成矩阵，其包括已从接收机反馈至发射机的多个特征向量。由于有限的反向链路资源，这个初步波束形成矩阵可能未包括传输所需的所有特征向量。
为了形成提供最佳可用传输特性的特征波束形成向量集，对波束形成矩阵进行QR分解，以形成完整特征向量集，如下：
V＝QR(B)
B＝[v1v2…vk]是已被反馈的K个特征向量
B是“初步”波束形成矩阵。V是包括完整特征向量集的“最终”波束形成矩阵。
V＝[v1v2…vkvk+1…………vM]
vk+1…vM是从QR分解中生成的伪随机特征向量。
波束形成向量的各个标量表示应用于从MT个天线向每个接入终端发送的符号的波束形成权重。从而，这些向量可由下述方程表示：
F M = 1 M v 1 v 2 · · · v M 方程(6)
其中，M是用于传输的层数。为了判断应当使用多少个特征波束(阶数预测)以及应当使用哪种传输模式来获得最大特征波束形成增益，可以使用多种方法。如果接入终端没有被调度，则特征波束反馈(例如，7比特或其它大小的反馈)可包括阶数信息，其可基于宽带导频进行计算并且随着特征波束信息一起进行报告。从接入终端发送的控制或者信令信道信息在解码之后，可作为反向链路的宽带导频。
参考图4，示出根据一个实施例的多址无线通信系统中的发射机和接收机。在发射机系统410中，从数据源412向发射(TX)数据处理器414提供多个数据流的业务数据。在一个实施例中，每个数据流通过相应的发射天线进行发送。TX数据处理器414基于为每个数据流选择的一种特定编码方案来对该数据流的业务数据进行格式化、编码以及交织，以提供编码数据。在某些实施例中，TX数据处理器414基于符号正被发送至的用户而将波束形成权重应用于数据流的符号。在某些实施例中，可基于在发射机402处生成的特征波束向量而生成波束形成权重，并且将其作为反馈而提供给发射机400。此外，在调度传输的情况下，TX数据处理器414可以基于从用户发送的阶数信息来选择分组格式。
可以利用OFDM技术将每个数据流的编码数据与导频数据进行复用。导频数据通常是以已知方式进行处理的已知数据模式，其可用于在接收机系统处估计信道响应。然后，基于为每个数据流选择的一种特定调制方案(例如，BPSK、QPSK、M-PSK或者M-QAM)对该数据流的复用的导频和编码数据进行调制，以提供调制符号。可以由处理器430执行的指令确定每个数据流的数据速率、编码和调制。如上所述，在某些实施例中，一个或多个流的分组格式可能随着从用户发送的阶数信息而发生变化。
然后，将所有数据流的调制符号提供给TX MIMO处理器420，处理器420可进一步处理调制符号(例如，OFDM)。然后，TX MIMO处理器420向NT个发射机(TMTR)422a至422t提供NT个调制符号流。在某些实施例中，TX MIMO处理器420基于符号正被发送至的用户以及发送符号时所经由的天线，根据该用户的信道响应信息而将波束形成权重应用于数据流的符号。
每个发射机422接收并处理相应的符号流，以提供一个或多个模拟信号，以及进一步对模拟信号进行调整(例如，放大、滤波以及上变换)，以提供适合于在MIMO信道上传输的调制信号。然后，分别从NT个天线424a至424t发送来自发射机422a至422t的NT个调制信号。
在接收机系统450中，所发送的调制信号由NR个天线452a至452r接收，并且来自每个天线452的接收信号被提供给相应的接收机(RCVR)454。每个接收机454对相应的接收信号进行调整(例如，滤波、放大以及下变换)，对调整信号进行数字化以提供采样，以及进一步处理采样以提供相应的“接收”符号流。
然后，RX数据处理器460基于一种特定的接收机处理技术，从NR个接收机454接收并处理NR个接收符号流，以提供NT个“检测”符号流。下面进一步详细描述RX数据处理器460的处理。每个检测符号流包括一些符号，其是对为相应数据流所发送的调制符号的估计。然后，RX数据处理器460对每个检测符号流进行解调、解交织以及解码，以恢复数据流的业务数据。RX数据处理器460的处理与发射机系统410处TX MIMO处理器420和TX数据处理器414所执行的处理互补。
RX处理器460所生成的信道响应估计可用于执行接收机处的空间、空/时处理，调整功率电平，改变调制速率或方案，或者其它操作。RX处理器460可进一步估计检测符号流的信噪干扰比(SNR)以及可能的其它信道特征，并且向处理器470提供这些数值。RX数据处理器460或者处理器470可进一步导出对系统的“工作”SNR的估计。然后，处理器470提供所估计的信道状态信息(CSI)，其可包括关于通信链路和/或接收数据流的多种类型的信息。例如，CSI可能只包括工作SNR。然后，CSI由TX数据处理器438(其还从数据源476接收多个数据流的业务数据)进行处理，由调制器480进行调制，由发射机454a至454r进行调整，以及被发送回到发射机系统410。
另外，处理器470可计算接收机402所经历的特征波束。可按照针对图3的描述来计算特征波束。然后，处理器470可确定主要特征波束，并且可以仅对于主要特征波束提供反馈。处理器470可以根据发射机400已知的码本对主要特征波束进行量化。在某些实施例中，如针对图3的描述，可使用5比特编码，以允许大范围的反馈。码本大小可以根据可用于该反馈的反向链路资源而发生变化。
为了确定何时对主要特征波束进行反馈，处理器470可计算信道统计，以及确定在到接收机402的两个或多个连续传输之间，在信道统计上发生了什么变化。基于变化的程度，可以判断是否提供特征波束反馈。在附加实施例中，处理器可确定一个特定传输的即时信道信息，然后确定在一个或多个先前传输的即时信道信息之间的变化。然后，可将该信息用于确定是否提供特征波束反馈。
在发射机系统410处，来自接收机系统450的调制信号由天线424接收，由接收机422进行调整，由解调器440进行解调，以及由RX数据处理器442进行处理，以恢复接收机系统报告的CSI。然后，所报告的CSI被提供给处理器430，并被用于：(1)确定用于数据流的数据速率以及编码和调制方案，以及(2)生成对TX数据处理器414和TX MIMO处理器420的多种控制。
在接收机处，可将多种处理技术用于处理NR个接收信号，以对NT个发送符号流进行检测。这些接收机处理技术可组成两个主要类别：(i)空间和空-时接收机处理技术(也称为均衡技术)；以及(ii)“连续调零/均衡及干扰消除”接收机处理技术(也称为“连续干扰消除”或者“连续消除”接收机处理技术)。
由NT个发射和NR个接收天线形成的MIMO信道可被分解为Ns个独立信道，其中，Ns≤min{NT，NR}。Ns个独立信道中的每一个也可称为MIMO信道的空间子信道(或者传输信道)并且对应于一个维度。
对于全阶MIMO信道，其中，Ns＝NT≤NR，可从NT个发射天线中的每一个发送独立的数据流。所发送的数据流可经历不同信道状况(例如，不同的衰落和多路径效应)，并且可能对于一个给定的发送功率获得不同的信噪干扰比(SNR)。此外，在接收机处使用连续干扰消除处理以恢复发送数据流的情况下，可基于数据流被恢复的特定顺序获得对应于数据流的不同SNR。因此，不同的数据流可支持不同的数据速率，这取决于其所获得的SNR。由于信道状况通常随着时间变化，每个数据流所支持的数据速率也随着时间变化。
MIMO设计可具有两个工作模式，即单码字(SCW)和多码字(MCW)。在MCW模式下，发射机可以利用不同的速率单独对在每个空间层上发送的数据进行编码。接收机使用连续干扰消除(SIC)算法，其工作过程如下：对第一层解码；然后在对被编码的第一层进行再次编码并将其与“估计信道”相乘之后，从所接收的信号中提取其基值；然后对第二层进行解码，以此类推。这种“洋葱拨离(onion-peeling)”方法表示每个连续被解码的层观测到递增的SNR并因此可以支持更高的速率。在没有误差传播的情况下，使用SIC的MCW设计基于信道状况获得了最大的系统传输容量。这种设计的缺点是由“管理”每个空间层速率的负担引起的，包括：(a)增加的CQI反馈(需要对于每一层提供一个CQI)；(b)增加的确认(ACK)或者否定确认(NACK)消息(每层一个)；(c)由于每一层可以在不同传输中终止所引起的混合ARQ(HARQ)的复杂性；(d)SIC对于具有增加的多普勒的信道估计误差和/或低SNR的性能灵敏度；以及(e)由于每一后续层只有在前一层被解码后才能进行解码，导致增加的解码延迟要求。
在SCW模式设计中，发射机使用“相同的数据速率”对在每个空间层上发送的数据进行编码。接收机可以对每个音调使用低复杂性线性接收机，例如最小均方差方案(MMSE)或者零频率(ZF)接收机，或者非线性接收机，例如QRM。这允许接收机仅针对“最佳”层报告信道估计，并且降低了用于提供该信息的传输开销。
虽然图4及相关描述针对MIMO系统，其它多输入单输出(MISO)以及单输出多输入(SIMO)系统也可使用图4的结构以及针对图3描述的结构、方法和系统。
参考图5，示出根据一个实施例的多址无线通信系统中的发射机系统的框图。发射机500基于信道信息使用速率预测模块502，其控制单输入单输出(SISO)编码器504生成信息流。
比特506由编码器模块506进行turbo编码，并且由映射模块508映射为调制符号，其中映射模块508是基于速率预测模块502所指示的分组格式(PF)524而进行映射的。然后，由解复用器510将编码符号解复用为M个层512，其被提供给波束形成模块514。
波束形成模块514生成一个NT×M波束形成矩阵。可对于反向链路上的每个传输形成所述矩阵。每个传输可能涉及处理M个层以及生成NT个流。可根据特征波束反馈524(例如，由接入终端发送至接入点的量化的特征向量)生成特征波束权重。此外，如上所述，反馈可能只包括在接入终端处经历的主要特征向量。
在波束形成之后，将NT个流512提供给OFDM调制器518a至518t，其将输出符号流与导频符号交织。对于每个发射天线520a至520t的OFDM处理采用相同的方式，在OFDM处理之后，通过MIMO方案发送信号。
在SISO编码器504中，turbo编码器506对数据流进行编码，以及在一个实施例中，使用1/5编码率。应当注意，可使用其它类型的编码器以及编码率。符号编码器508将编码数据映射为进行传输的星座图符号。在一个实施例中，星座图可以是正交幅度星座图。虽然本文描述了SISO编码器，但是也可使用包括MIMO编码器的其它编码器类型。
速率预测模块502对CQI和/或信道估计信息进行处理，信道估计信息包括阶数信息并可在接入点处对于每个接入终端而进行接收。可基于宽带导频符号、基于跳变的导频符号或者这两者，提供阶数信息。阶数信息由速率预测模块502用于确定调制速率。在一个实施例中，速率预测算法可以使用信道估计和/或在大约每5毫秒处的5比特CQI反馈522。CQI反馈522的实际比特数量可基于设计选择或者参数而发生变化。
使用多种技术确定例如调制速率等分组格式。在名称为“Performance Based Rank Prediction for MIMO Design”的共同未决美国专利申请No.11/021,791以及名称为“Capacity Based RankPrediction for MIMO Design”的美国专利申请No.11/022,347中描述和公开了示例性技术，在本文中通过参考而引入这两个申请，如同在本文中全部提出。
参考图6，示出根据一个实施例的多址无线通信系统中的接收机系统的框图。在图6中，每个天线602a至602t接收发往接收机600的一个或多个符号。天线602a至602t分别耦接到OFDM解调器604a至604t，每个解调器耦接到跳变缓冲器606。OFDM解调器604a至604t分别将OFDM接收符号解调为接收符号流。跳变缓冲器606存储对应于跳变区域的接收符号，其中接收符号在该跳变区域中发送。
将跳变缓冲器606的输出提供给解码器608，解码器608可以是对OFDM频段的每个载频进行独立处理的解码器。跳变缓冲器606和解码器608都耦接到信道统计处理610，其形成可被提供给发射机用于后续传输的特征波束权重。另外，信道统计处理610确定多个传输的信道统计、二阶信道统计、即时信道信息或者信噪比。信道统计处理610还可以确定是否已发生变化，然后发送特征波束反馈。另外，接收机600可以确定可用反向连路资源。
然后，将解调信息流提供给对数似然比模块612和解码器614，解码器614可以是turbo解码器或者其它解码器以匹配接入点处所用的编码器，其提供解码数据流以进行处理。
参考图7，示出根据一个实施例确定被分配用于提供特征波束反馈的资源的流程图。在方框700，确定可用反向链路资源。所述资源可以是可通过反向链路信令或控制信道发送的符号数量、可用带宽或者其它信息。所述确定可在接入点处进行并被提供到接入终端，或者，所述确定可在接入终端处基于固定参数或下一前向链路传输的数据速率而进行。
然后，在方框702，确定在接入终端处可提供的特征波束反馈的数量。所述数量可以是特征波束的总数量、主要特征波束的数量或者特征波束的阶数。此外，所述数量可包括阶数信息或者CQI信息，使得所述数量考虑到向接入终端要求的反馈的全部或者大部分。
在方框704，生成对于被分配给反向链路传输的资源的指示符。指示符可在接入点或者接入终端处生成，然后被发送至接入终端。然后，在方框706，基于指示符将反向链路上的资源分配用于传输。
参考图8，示出根据另一个实施例确定是否提供特征波束反馈的流程图。在方框800，生成信道信息。信道信息可以是即时信道信息或者信道统计。在某些实施例中，信道信息可以关于分组差错率、衰落、信号强度、信道状态信息或者其它信息。此外，可使用在频域和时域的一个或两者中计算的信道信息。此外，在某些实施例中，使用二阶信道统计。在其它实施例中，除了二阶信道统计，还使用一阶或者更高阶信道统计。在某些实施例中，可基于导频符号或者导频符号和数据符号两者计算信道信息。
在方框802，确定信道信息的变化。该变化可以是在连续传输之间、在当前传输与当前传输之前N个传输的传输之间、时间平均变化、M个传输的平均值或者其它方式。在一个实施例中，所述变化可被计算为当前传输与当前传输之前N个传输的传输之间的信道信息的平方差的绝对值。
在方框804，确定接入终端和接入点之间的信道是稳定的还是变化的。在一个实施例中，可基于信道统计的变化是大于还是小于门限，进行该确定。在其它实施例中，可基于在对信道信息变化的多个确定之间的变化速率进行该确定。也可将其它方法用于确定信道是稳定的还是变化的。
在方框806，如果确定信道是稳定的，则确定主要特征波束。然后，在方框808，将关于主要特征波束的信息发送至接入点。可根据码本对关于主要特征波束的信息进行量化。此外，应当注意，方框806可出现在方框804之前的任何时间处，并且其可与图8中所示的处理相独立。在方框810，如果确定信道是变化的，则不提供反馈。
参考图9，示出根据另一个实施例生成特征波束向量的流程图。在方框900，读取从终端向接入点提供的特征波束信息。如上所述，在某些实施例中，可对特征波束信息进行量化，从而，在方框900，从码本中读取正确的信息以供使用。此外，特征波束信息可仅仅应用于主要特征波束。
在方框902，特征波束信息被用于构造特征波束形成矩阵。然后，在方框904，对特征波束形成矩阵进行分解。该分解可以是QR分解。然后，在方框906，可以对于将被发送至接入终端的下一跳变区域的符号生成表示波束形成权重的特征向量。
参考图10，示出根据一个实施例生成特征波束反馈的流程图。在方框1000，基于所接收的符号，例如导频符号，对前向链路信道进行估计。然后，在方框1002，基于前向链路信道估计确定和计算主要特征波束。在方框1004，确定可用前向链路资源的数量。该资源可以是可通过反向链路信令或控制信道发送的符号数量、可用带宽或者其它信息。该确定可在接入点处进行并被提供给接入终端，或者，该确定可在接入终端处基于固定参数或下一前向链路传输的数据速率而进行。
在方框1006，在认为反向链路资源很低的情况下，在作为反馈而被提供给接入点之前，确定主要特征波束的频率平均值。在方框1008，在认为反向链路资源很高的情况下，将每个所需频率的主要特征波束作为反馈提供给接入点。
可使用TX处理器420或460、处理器430或470以及存储器432或472来执行上述处理。针对图5A、图5B以及图6-10描述的其它处理、操作以及特性可在任何处理器、控制器和/或其它处理设备上实现，并且可作为计算机可读指令(例如源代码、目标代码或其它代码)而被存储在计算机可读介质上。
可使用多种方式实现本文描述的技术。例如，这些技术可实现在硬件、软件或者两者的组合中。对于硬件实现方式，接入点或接入终端内的处理单元可实现在一个或多个专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、处理器、控制器、微控制器、微处理器、被设计用于实现本文所述功能的其它电子单元或者其组合内。
对于软件实现方式，可使用实现本文所述功能的模块(例如，程序、函数等等)实现本文描述的技术。软件代码可被存储在存储器单元中，并且由处理器执行。存储器单元可实现在处理器内部或者处理器外部，在存储器单元实现在处理器外部的情况下，其可以通过本领域已知的多种方式可通信地耦接到处理器。
提供了对所公开实施例的前述描述，以使本领域技术人员能够实现和使用本文所公开的特性、功能、操作和实施例。本领域技术人员显然可了解对这些实施例的多种修改，并且在不脱离本发明的精神或者范围的前提下，本文定义的一般原理可被应用于其它实施例。从而，本公开文件并不旨在被限制于本文所示的实施例，而应给予与本文所述原理和新颖特性相一致的最宽范围。

Claims (84)

1.一种无线通信装置，包括：
至少两个天线；以及
处理器，能够确定可用的反向链路传输资源，以及基于对所述可用的反向链路传输资源的确定，提供对于被分配用于波束形成信息传输的所述反向链路传输资源的指示符。
2.根据权利要求1所述的无线通信装置，其中，所述处理器能够基于发送反向链路传输的用户数量，确定所述可用的反向链路传输资源。
3.根据权利要求2所述的无线通信装置，其中，所述处理器能够将包括所述指示符的消息从所述至少两个天线进行发送。
4.根据权利要求1所述的无线通信装置，其中，所述处理器能够基于向无线通信设备的前向链路传输，确定所述可用的反向链路传输资源。
5.根据权利要求1所述的无线通信装置，其中，所述处理器能够基于所述指示符的所述反向链路资源，将包括所述波束形成信息的消息进行发送。
6.根据权利要求1所述的无线通信装置，其中，所述反向链路资源包括数据信道和控制信道。
7.根据权利要求1所述的无线通信装置，其中，所述指示符还包括关于在所分配的反向链路传输资源上反馈的多个特征波束的信息。
8.根据权利要求1所述的无线通信装置，其中，所述指示符还包括基于频率平均特征波束信息的信息反馈。
9.根据权利要求1所述的无线通信装置，其中，所述无线通信装置包括接入终端。
10.根据权利要求1所述的无线通信装置，其中，所述无线通信装置包括接入点。
11.根据权利要求1所述的无线通信装置，其中，所述指示符还包括基于每个跳变的特征波束信息的信息反馈。
12.根据权利要求1所述的无线通信装置，其中，所述指示符还包括基于有限频率平均特征波束信息的信息反馈。
13.一种电子设备，包括：
存储器；以及
处理器，与所述存储器耦接，能够基于信道信息确定是否从至少一个天线发送特征波束信息。
14.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于所述信道统计确定所述信道是稳定信道还是变化信道，以及能够基于所述信道是所述稳定信道还是所述变化信道，确定是否发送特征波束信息。
15.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于所述信道统计是否在一个时间段内发生变化，确定所述信道是稳定信道还是变化信道。
16.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于所述信道统计在一个时间段内的变化是否超过门限，确定所述信道是稳定信道还是变化信道。
17.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于所述信道统计确定将为其发送特征波束信息的特征波束的数量。
18.根据权利要求17所述的电子设备，其中，所述处理器能够确定将为其发送特征波束信息的特征波束的数量少于用于发送到所述无线通信装置的所有特征波束的数量。
19.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于所述信道统计确定是否发送频率平均特征波束信息。
20.根据权利要求13所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够确定在预定时间间隔处的所述信道统计。
21.根据权利要求20所述的电子设备，其中，所述信道信息包括信道统计，以及其中，所述处理器能够基于在所述至少一个天线处接收的指令，确定所述预定时间间隔的长度。
22.根据权利要求13所述的电子设备，其中，所述特征波束信息包括与在所述无线通信装置处接收的信号的一个或多个特征向量对应的信息。
23.根据权利要求22所述的电子设备，其中，所述一个或多个特征向量的项在所述无线通信装置处接收的多个信号上进行平均。
24.根据权利要求22所述的电子设备，其中，所述一个或多个特征向量包括一个或多个时间平均特征向量。
25.根据权利要求22所述的电子设备，其中，所述一个或多个特征向量的项在所述无线通信装置处接收的所述信号的多个子载波上进行平均。
26.根据权利要求22所述的电子设备，其中，所述一个或多个特征向量包括一个或多个子载波平均特征向量。
27.根据权利要求13所述的电子设备，其中，所述特征波束信息包括与在所述无线通信装置处接收的信号的一个或多个特征向量以及所述一个或多个特征向量中每一个的特征值对应的信息。
28.根据权利要求13所述的电子设备，其中，所述特征波束信息包括与在所述无线通信装置处接收的信号的主要特征向量对应的信息。
29.根据权利要求13所述的电子设备，其中，所述处理器能够根据码本对所述特征波束信息进行量化。
30.根据权利要求13所述的电子设备，其中，所述处理器能够使用期望数量的比特对所述特征波束信息的每个复元素进行量化。
31.根据权利要求13所述的电子设备，其中，所述处理器能够根据预定的星座图对所述特征波束信息的每个复元素进行量化。
32.根据权利要求13所述的电子设备，其中，所述处理器能够对所述特征波束信息的某些元素进行量化。
33.根据权利要求11所述的电子设备，其中，所述信道信息包括二阶信道统计。
34.根据权利要求11所述的无线通信装置，其中，所述信道信息包括信道统计，以及其中，所述处理器基于所述信道统计以及所接收的指令，确定是否发送特征波束信息。
35.根据权利要求11所述的电子设备，其中，所述信道信息包括即时信道信息。
36.一种在无线通信系统中进行资源分配的方法，包括：
确定在无线通信装置处可用的反向链路资源；
确定波束形成反馈所需的资源量；
基于可用的反向链路资源，分配所述反向链路上的波束形成反馈资源。
37.根据权利要求36所述的方法，其中，确定所述可用的反向链路传输资源的步骤包括基于发送反向链路传输的用户数量进行确定。
38.根据权利要求37所述的方法，还包括发送包括对所分配波束形成反馈资源的指示符的消息。
39.根据权利要求36所述的方法，其中，确定可用的反向链路资源的步骤包括基于前向链路传输确定可用的反向链路资源。
40.根据权利要求36所述的方法，其中，所述反向链路资源包括数据信道和控制信道。
41.根据权利要求36所述的方法，其中，分配步骤包括对将在所分配的反向链路资源上反馈的多个特征波束进行分配。
42.根据权利要求36所述的方法，其中，分配步骤包括对包括频率平均特征波束信息的反馈进行分配。
43.根据权利要求36所述的方法，其中，所述无线通信装置包括接入终端。
44.根据权利要求36所述的方法，其中，所述无线通信装置包括接入点。
45.一种在无线通信系统中进行资源分配的方法，包括：
在无线通信设备处生成特征波束信息；
生成关于所述无线通信设备所连接的通信信道的信道信息；以及
基于所述信道信息确定是否发送所述特征波束信息。
46.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，确定是否发送的步骤包括基于所述信道统计确定所述信道是稳定信道还是变化信道。
47.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，确定所述信道是所述稳定信道还是所述变化信道的步骤包括基于所述信道统计在一个时间段内是否发生变化进行确定。
48.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，确定所述信道是所述稳定信道还是所述变化信道的步骤包括基于所述信道统计在一个时间段内的变化是否超过门限进行确定。
49.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，确定是否发送的步骤包括基于所述信道统计确定将为其发送特征波束信息的特征波束的数量。
50.根据权利要求49所述的方法，其中，确定特征波束的数量的步骤包括确定特征波束的数量少于用于发送到所述无线通信装置的所有特征波束的数量。
51.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，所述方法还包括基于所述信道统计确定是否发送频率平均特征波束信息。
52.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，生成信道统计的步骤包括在预定时间间隔处生成信道统计。
53.根据权利要求45所述的方法，其中，所述特征波束信息包括与在所述无线通信装置处接收的信号的一个或多个特征向量对应的信息。
54.根据权利要求53所述的方法，还包括在多个所接收的信号上对所述一个或多个特征向量进行平均。
55.根据权利要求53所述的方法，还包括在所接收的信号的多个子载波上对所述一个或多个特征向量进行平均。
56.根据权利要求45所述的方法，其中，所述特征波束信息包括与一个或多个特征向量以及所述一个或多个特征向量中每一个的特征值对应的信息。
57.根据权利要求45所述的方法，其中，所述特征波束信息包括与所接收的信号的主要特征向量对应的信息。
58.根据权利要求45所述的方法，还包括根据码本对所述特征波束信息进行量化。
59.根据权利要求45所述的方法，还包括对具有最小均方差的特征波束的特征波束信息进行量化。
60.根据权利要求45所述的方法，其中，所述信道信息包括二阶信道统计。
61.根据权利要求45所述的方法，其中，所述信道信息包括信道统计，以及其中，确定是否发送特征波束信息的步骤包括基于信道统计以及所接收的指令确定是否发送。
62.根据权利要求45所述的方法，其中，所述信道信息包括即时信道信息。
63.一种装置，包括：
用于确定可用的反向链路资源的模块；
用于确定波束形成反馈所需的资源量的模块；
用于基于可用的反向链路资源分配反向链路上的波束形成反馈资源的模块。
64.根据权利要求63所述的装置，其中，用于确定所述可用的反向链路传输资源的模块包括用于基于发送反向链路传输的用户数量进行确定的模块。
65.根据权利要求63所述的装置，其中，确定可用的反向链路资源包括基于向所述装置的前向链路传输确定可用的反向链路资源。
66.根据权利要求63所述的装置，其中，用于分配的所述模块包括用于对将在所分配的反向链路资源上反馈的多个特征波束进行分配的模块。
67.根据权利要求63所述的装置，其中，用于分配的所述模块包括用于对包括频率平均特征波束信息的反馈进行分配的模块。
68.一种装置，包括：
用于生成特征波束信息的模块；
用于生成关于所述装置所连接的通信信道的信道信息的模块；以及
用于基于所述信道信息确定是否发送所述特征波束信息的模块。
69.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及其中，用于确定是否发送的所述模块包括用于基于所述信道统计确定所述信道是稳定信道还是变化信道的模块。
70.根据权利要求69所述的装置，其中，所述信道信息包括信道统计，以及其中，用于确定所述信道是所述稳定信道还是所述变化信道的模块包括用于基于所述信道统计在一个时间段内是否发生变化进行确定的模块。
71.根据权利要求69所述的装置，其中，所述信道信息包括信道统计，以及其中，用于确定所述信道是所述稳定信道还是所述变化信道的模块包括用于基于所述信道统计在一个时间段内的变化是否超过门限进行确定的模块。
72.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及其中，用于确定是否发送的所述模块包括用于基于所述信道统计确定将为其发送特征波束信息的特征波束的数量的模块。
73.根据权利要求72所述的装置，其中，所述特征波束的数量少于用于发送到所述无线通信装置的所有特征波束的数量。
74.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及所述装置还包括用于基于所述信道统计确定是否发送频率平均特征波束信息的模块。
75.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及其中，用于生成信道统计的所述模块包括用于在预定时间间隔处生成信道统计的模块。
76.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及所述装置还包括用于在多个所接收的信号上对所述一个或多个特征向量进行平均的模块。
77.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及所述装置还包括用于在所接收的信号的多个子载波上对所述一个或多个特征向量进行平均的模块。
78.根据权利要求68所述的装置，其中，所述特征波束信息包括与所接收的信号的主要特征向量对应的信息。
79.根据权利要求68所述的装置，还包括用于根据码本对所述特征波束信息进行量化的模块。
80.根据权利要求66所述的装置，还包括用于根据预定的星座图对所述特征波束信息的每个复元素进行量化的模块。
81.根据权利要求68所述的电子设备，还包括用于对所述特征波束信息的某些元素进行量化的模块。
82.根据权利要求68所述的装置，其中，所述信道信息包括二阶信道统计。
83.根据权利要求68所述的装置，其中，所述信道信息包括信道统计，以及其中，用于确定是否发送特征波束信息的所述模块包括用于基于信道统计以及所接收的指令确定是否发送的模块。
84.根据权利要求68所述的装置，其中，所述信道信息包括即时信道信息。
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102474317A (zh) * 2009-07-20 2012-05-23 英特尔公司 用于无线通信系统中的频率选择信道的mimo波束成形的技术
CN101729457B (zh) * 2008-10-17 2013-01-09 上海交通大学 动态子载波关联有限比特反馈和调度方法
CN103119856A (zh) * 2010-09-24 2013-05-22 英特尔公司 多用户多输入多输出无线通信的装置、系统和方法
CN104158577A (zh) * 2014-08-27 2014-11-19 北京邮电大学 一种3d-mimo系统的波束赋形实现方法
CN105071844A (zh) * 2015-08-03 2015-11-18 北京邮电大学 确定波束赋形权重矢量的方法及装置
CN105071845A (zh) * 2015-08-03 2015-11-18 北京邮电大学 一种波束赋形方法及基站
CN107210988A (zh) * 2015-01-23 2017-09-26 Lg 电子株式会社 在无线通信系统中通过设备对设备通信终端产生信号的方法和装置
CN108347274A (zh) * 2017-01-25 2018-07-31 华为技术有限公司 一种指示反馈的波束数量的方法及装置
CN109039565A (zh) * 2012-03-16 2018-12-18 北京新岸线移动多媒体技术有限公司 一种资源调度方法及装置

Families Citing this family (117)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US9826537B2 (en) 2004-04-02 2017-11-21 Rearden, Llc System and method for managing inter-cluster handoff of clients which traverse multiple DIDO clusters
US8542763B2 (en) 2004-04-02 2013-09-24 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US10749582B2 (en) 2004-04-02 2020-08-18 Rearden, Llc Systems and methods to coordinate transmissions in distributed wireless systems via user clustering
US9819403B2 (en) 2004-04-02 2017-11-14 Rearden, Llc System and method for managing handoff of a client between different distributed-input-distributed-output (DIDO) networks based on detected velocity of the client
US10425134B2 (en) 2004-04-02 2019-09-24 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US10277290B2 (en) 2004-04-02 2019-04-30 Rearden, Llc Systems and methods to exploit areas of coherence in wireless systems
US10187133B2 (en) 2004-04-02 2019-01-22 Rearden, Llc System and method for power control and antenna grouping in a distributed-input-distributed-output (DIDO) network
US9312929B2 (en) 2004-04-02 2016-04-12 Rearden, Llc System and methods to compensate for Doppler effects in multi-user (MU) multiple antenna systems (MAS)
US10985811B2 (en) 2004-04-02 2021-04-20 Rearden, Llc System and method for distributed antenna wireless communications
US10886979B2 (en) 2004-04-02 2021-01-05 Rearden, Llc System and method for link adaptation in DIDO multicarrier systems
US11451275B2 (en) 2004-04-02 2022-09-20 Rearden, Llc System and method for distributed antenna wireless communications
US8654815B1 (en) 2004-04-02 2014-02-18 Rearden, Llc System and method for distributed antenna wireless communications
US10200094B2 (en) 2004-04-02 2019-02-05 Rearden, Llc Interference management, handoff, power control and link adaptation in distributed-input distributed-output (DIDO) communication systems
US11394436B2 (en) 2004-04-02 2022-07-19 Rearden, Llc System and method for distributed antenna wireless communications
US11309943B2 (en) 2004-04-02 2022-04-19 Rearden, Llc System and methods for planned evolution and obsolescence of multiuser spectrum
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US9685997B2 (en) 2007-08-20 2017-06-20 Rearden, Llc Systems and methods to enhance spatial diversity in distributed-input distributed-output wireless systems
US7864659B2 (en) * 2004-08-02 2011-01-04 Interdigital Technology Corporation Quality control scheme for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US8446892B2 (en) 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8611284B2 (en) 2005-05-31 2013-12-17 Qualcomm Incorporated Use of supplemental assignments to decrement resources
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
US8885628B2 (en) 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US20070149132A1 (en) 2005-12-22 2007-06-28 Junyl Li Methods and apparatus related to selecting control channel reporting formats
US8831607B2 (en) 2006-01-05 2014-09-09 Qualcomm Incorporated Reverse link other sector communication
US7894505B2 (en) * 2006-04-19 2011-02-22 Samsung Electronics Co., Ltd. Apparatus and method for selecting effective channel in a multi-user MIMO system
US8176376B2 (en) * 2006-10-02 2012-05-08 Telefonaktiebolaget Lm Ericsson (Publ) Optimal error protection coding for MIMO ACK/NACK/POST information
TWI545987B (zh) * 2006-10-24 2016-08-11 高通公司 用於無線通訊系統之獲取導航
US7983322B2 (en) 2007-01-09 2011-07-19 Broadcom Corporation Method and system for codebook design of MIMO pre-coders with finite rate channel state information feedback
GB2449935A (en) * 2007-06-08 2008-12-10 Fujitsu Ltd Closed loop MIMO communication system using SISO r.m.s. delay spread to estimate eigen coherence bandwidth.
KR101282522B1 (ko) * 2007-06-19 2013-07-04 엘지전자 주식회사 다중 안테나 시스템에서 제어정보 전송 방법
US8045497B2 (en) * 2007-07-02 2011-10-25 Samsung Electronics Co., Ltd. Method of allocating wireless resource for space division multiple access communication and wireless resource allocation system of enabling the method
US8379745B1 (en) * 2007-07-06 2013-02-19 Marvell International Ltd. Forward channel variation detection in a wireless communication system
US8213368B2 (en) * 2007-07-13 2012-07-03 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive compression of channel feedback based on second order channel statistics
EP2019496B1 (en) 2007-07-23 2017-06-07 Sony Corporation Method for transmitting a signal between a transmitter and a receiver in a power line network, transmitter, receiver, power line communication modem and powerline communication system
US8098755B2 (en) * 2007-09-07 2012-01-17 Broadcom Corporation Method and system for beamforming in a multiple user multiple input multiple output (MIMO) communication system using a codebook
EP2255458A4 (en) * 2008-02-28 2013-12-04 Apple Inc TRANSMITTING A RECORDED TRANSMITTED SIGNALING TO THE CODE OF IDENTIFYING INFORMATION FEEDBACK DATA STRUCTURE
WO2010005998A2 (en) * 2008-07-07 2010-01-14 Wi-Lan, Inc. Improved precoder for multiple-subcarrier band feedback
KR20100016726A (ko) * 2008-08-05 2010-02-16 삼성전자주식회사 공간 다중화를 지원하는 다중 안테나 시스템에서 계층 제거방법 및 장치
WO2010025426A1 (en) * 2008-08-28 2010-03-04 Wi-Lan, Inc. Hybrid feedback for closed loop multiple-input multiple-output
WO2010099653A1 (zh) * 2009-03-03 2010-09-10 深圳华为通信技术有限公司 信号编码方法及装置、联合反馈信号编码方法
KR20110036374A (ko) 2009-10-01 2011-04-07 삼성전자주식회사 명시적 피드백을 사용하는 다중 입출력 통신 시스템
KR101652869B1 (ko) 2009-11-02 2016-09-01 삼성전자주식회사 네트워크 다중 입출력 시스템에서 협력 멀티 포인트 송신을 위한 동적 채널 피드백 제어 방법
US9173191B2 (en) 2009-12-20 2015-10-27 Intel Corporation Device, system and method of simultaneously communicating with a group of wireless communication devices
US8374154B2 (en) * 2009-12-23 2013-02-12 Intel Corporation Device, system and method of simultaneously communicating with a group of wireless communication devices
EP2466761B1 (en) * 2010-01-27 2018-04-25 ZTE Corporation Multiple input multiple output and beam-forming data transmission method and device
CN102792606B (zh) * 2010-03-16 2015-07-22 瑞典爱立信有限公司 开环与闭环多流传送之间的切换方法及设备
US8594216B2 (en) 2010-08-25 2013-11-26 Qualcomm Incorporated Beamforming feedback options for MU-MIMO
KR102109655B1 (ko) * 2012-02-23 2020-05-12 한국전자통신연구원 대규모 안테나 시스템에서의 다중 입력 다중 출력 통신 방법
US8896521B2 (en) 2012-04-24 2014-11-25 Qualcomm Mems Technologies, Inc. Metal-insulator-metal capacitors on glass substrates
CN103580775B (zh) * 2012-07-20 2018-12-04 深圳市中兴微电子技术有限公司 Td-scdma下行控制信道信令解析判定方法和装置
US10115671B2 (en) 2012-08-03 2018-10-30 Snaptrack, Inc. Incorporation of passives and fine pitch through via for package on package
US11190947B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for concurrent spectrum usage within actively used spectrum
US11050468B2 (en) 2014-04-16 2021-06-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US11189917B2 (en) 2014-04-16 2021-11-30 Rearden, Llc Systems and methods for distributing radioheads
US10194346B2 (en) 2012-11-26 2019-01-29 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9621249B2 (en) * 2012-12-21 2017-04-11 Intel Corporation Techniques for variable channel bandwidth support
US9173221B2 (en) 2013-01-23 2015-10-27 Intel Corporation Apparatus, system and method of establishing a wireless beamformed link
US10164698B2 (en) 2013-03-12 2018-12-25 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9923657B2 (en) 2013-03-12 2018-03-20 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US9973246B2 (en) 2013-03-12 2018-05-15 Rearden, Llc Systems and methods for exploiting inter-cell multiplexing gain in wireless cellular systems via distributed input distributed output technology
US10488535B2 (en) 2013-03-12 2019-11-26 Rearden, Llc Apparatus and method for capturing still images and video using diffraction coded imaging techniques
RU2767777C2 (ru) 2013-03-15 2022-03-21 Риарден, Ллк Системы и способы радиочастотной калибровки с использованием принципа взаимности каналов в беспроводной связи с распределенным входом - распределенным выходом
US11290162B2 (en) 2014-04-16 2022-03-29 Rearden, Llc Systems and methods for mitigating interference within actively used spectrum
US9906280B2 (en) * 2014-07-14 2018-02-27 Intel Corporation Principal eigen beam quantization for MIMO systems
US9397736B2 (en) * 2014-11-21 2016-07-19 Intel IP Corporation Quantized eigen beams for controlling antenna array elements in a wireless network
TWI650957B (zh) * 2016-05-02 2019-02-11 瑞昱半導體股份有限公司 最大可能性偵測器與偵測方法以及採用最大可能性偵測之無線訊號接收器
US10904784B2 (en) * 2016-06-15 2021-01-26 Qualcomm Incorporated Beam reporting and scheduling in multicarrier beamformed communications
US10743296B2 (en) * 2016-10-25 2020-08-11 Qualcomm Incorporated For an uplink control channel
US10659112B1 (en) 2018-11-05 2020-05-19 XCOM Labs, Inc. User equipment assisted multiple-input multiple-output downlink configuration
US10756860B2 (en) 2018-11-05 2020-08-25 XCOM Labs, Inc. Distributed multiple-input multiple-output downlink configuration
US10432272B1 (en) 2018-11-05 2019-10-01 XCOM Labs, Inc. Variable multiple-input multiple-output downlink user equipment
US10812216B2 (en) 2018-11-05 2020-10-20 XCOM Labs, Inc. Cooperative multiple-input multiple-output downlink scheduling
AU2019388921B2 (en) 2018-11-27 2024-05-30 XCOM Labs, Inc. Non-coherent cooperative multiple-input multiple-output communications
US11063645B2 (en) 2018-12-18 2021-07-13 XCOM Labs, Inc. Methods of wirelessly communicating with a group of devices
US10756795B2 (en) 2018-12-18 2020-08-25 XCOM Labs, Inc. User equipment with cellular link and peer-to-peer link
US11330649B2 (en) 2019-01-25 2022-05-10 XCOM Labs, Inc. Methods and systems of multi-link peer-to-peer communications
US10756767B1 (en) 2019-02-05 2020-08-25 XCOM Labs, Inc. User equipment for wirelessly communicating cellular signal with another user equipment
US11032841B2 (en) 2019-04-26 2021-06-08 XCOM Labs, Inc. Downlink active set management for multiple-input multiple-output communications
US10756782B1 (en) 2019-04-26 2020-08-25 XCOM Labs, Inc. Uplink active set management for multiple-input multiple-output communications
US10735057B1 (en) 2019-04-29 2020-08-04 XCOM Labs, Inc. Uplink user equipment selection
US10686502B1 (en) 2019-04-29 2020-06-16 XCOM Labs, Inc. Downlink user equipment selection
US11411778B2 (en) 2019-07-12 2022-08-09 XCOM Labs, Inc. Time-division duplex multiple input multiple output calibration
US11411779B2 (en) 2020-03-31 2022-08-09 XCOM Labs, Inc. Reference signal channel estimation
US12068953B2 (en) 2020-04-15 2024-08-20 Virewirx, Inc. Wireless network multipoint association and diversity
EP4158795A4 (en) 2020-05-26 2024-06-19 Xcom Labs, Inc. BEAMFORMING ACCOUNTING FOR INTERFERENCE
US11496338B2 (en) 2020-07-14 2022-11-08 Nxp Usa, Inc. Method and apparatus for beamforming
CA3195885A1 (en) 2020-10-19 2022-04-28 XCOM Labs, Inc. Reference signal for wireless communication systems
WO2022093988A1 (en) 2020-10-30 2022-05-05 XCOM Labs, Inc. Clustering and/or rate selection in multiple-input multiple-output communication systems

Family Cites Families (887)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4393276A (en) 1981-03-19 1983-07-12 Bell Telephone Laboratories, Incorporated Fourier masking analog signal secure communication system
FR2527871B1 (fr) 1982-05-27 1986-04-11 Thomson Csf Systeme de radiocommunications, a sauts de frequence
SU1320883A1 (ru) 1985-02-06 1987-06-30 Предприятие П/Я Р-6707 Устройство дл восстановлени временных интервалов цифровых сигналов,принимаемых из канала с ограниченной полосой пропускани
FR2584884B1 (fr) 1985-07-09 1987-10-09 Trt Telecom Radio Electr Procede et dispositif de recherche de canal libre pour un systeme de radio mobile
JPS6216639A (ja) 1985-07-16 1987-01-24 Kokusai Denshin Denwa Co Ltd <Kdd> 秘話音声信号送出装置
GB2180127B (en) 1985-09-04 1989-08-23 Philips Electronic Associated Method of data communication
JPS6290045A (ja) 1985-10-16 1987-04-24 Kokusai Denshin Denwa Co Ltd <Kdd> Ｆｄｍａ通信方式における周波数割当方式
US5008900A (en) 1989-08-14 1991-04-16 International Mobile Machines Corporation Subscriber unit for wireless digital subscriber communication system
FR2652452B1 (fr) 1989-09-26 1992-03-20 Europ Agence Spatiale Dispositif d'alimentation d'une antenne a faisceaux multiples.
JPH04111544A (ja) 1990-08-31 1992-04-13 Nippon Telegr & Teleph Corp <Ntt> 無線チャネル割当方法
US5257399A (en) 1990-11-28 1993-10-26 Telefonaktiebolaget L M Ericsson Multiple access handling in a cellular communications system
US5253270A (en) * 1991-07-08 1993-10-12 Hal Communications Apparatus useful in radio communication of digital data using minimal bandwidth
US5455839A (en) 1991-12-27 1995-10-03 Motorola, Inc. Device and method for precoding
JP2904986B2 (ja) 1992-01-31 1999-06-14 日本放送協会 直交周波数分割多重ディジタル信号送信装置および受信装置
US5384810A (en) * 1992-02-05 1995-01-24 At&T Bell Laboratories Modulo decoder
US5363408A (en) 1992-03-24 1994-11-08 General Instrument Corporation Mode selective quadrature amplitude modulation communication system
US5282222A (en) * 1992-03-31 1994-01-25 Michel Fattouche Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum
GB9209027D0 (en) 1992-04-25 1992-06-17 British Aerospace Multi purpose digital signal regenerative processing apparatus
US5268694A (en) 1992-07-06 1993-12-07 Motorola, Inc. Communication system employing spectrum reuse on a spherical surface
FR2693861A1 (fr) 1992-07-16 1994-01-21 Philips Electronique Lab Récepteur de signaux à répartition multiplexée de fréquences orthogonales muni d'un dispositif de synchronisation de fréquences.
US5404355A (en) 1992-10-05 1995-04-04 Ericsson Ge Mobile Communications, Inc. Method for transmitting broadcast information in a digital control channel
US5603081A (en) 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
US5768276A (en) 1992-10-05 1998-06-16 Telefonaktiebolaget Lm Ericsson Digital control channels having logical channels supporting broadcast SMS
US5604744A (en) * 1992-10-05 1997-02-18 Telefonaktiebolaget Lm Ericsson Digital control channels having logical channels for multiple access radiocommunication
JP2942913B2 (ja) 1993-06-10 1999-08-30 ケイディディ株式会社 相手認証／暗号鍵配送方式
SG48219A1 (en) 1993-06-18 1998-04-17 Qualcomm Inc Method and apparatus for determining data rate of transmitted variable rate data in a communications receiver
US5870393A (en) 1995-01-20 1999-02-09 Hitachi, Ltd. Spread spectrum communication system and transmission power control method therefor
JPH0746248A (ja) 1993-07-30 1995-02-14 Toshiba Corp 無線通信システム
US6501810B1 (en) 1998-10-13 2002-12-31 Agere Systems Inc. Fast frame synchronization
US5594738A (en) * 1993-10-18 1997-01-14 Motorola, Inc. Time slot allocation method
ZA948134B (en) 1993-10-28 1995-06-13 Quaqlcomm Inc Method and apparatus for performing handoff between sectors of a common base station
US5410538A (en) 1993-11-09 1995-04-25 At&T Corp. Method and apparatus for transmitting signals in a multi-tone code division multiple access communication system
DE69434353T2 (de) 1993-12-22 2006-03-09 Koninklijke Philips Electronics N.V. Mehrträger-Frequenzsprungkommunikationssystem
US5465253A (en) 1994-01-04 1995-11-07 Motorola, Inc. Method and apparatus for demand-assigned reduced-rate out-of-band signaling channel
US5469471A (en) 1994-02-01 1995-11-21 Qualcomm Incorporated Method and apparatus for providing a communication link quality indication
GB9402942D0 (en) * 1994-02-16 1994-04-06 Northern Telecom Ltd Base station antenna arrangement
US5513379A (en) 1994-05-04 1996-04-30 At&T Corp. Apparatus and method for dynamic resource allocation in wireless communication networks utilizing ordered borrowing
US5603096A (en) 1994-07-11 1997-02-11 Qualcomm Incorporated Reverse link, closed loop power control in a code division multiple access system
US5583869A (en) 1994-09-30 1996-12-10 Motorola, Inc. Method for dynamically allocating wireless communication resources
WO1996013920A1 (en) 1994-10-27 1996-05-09 International Business Machines Corporation Method and apparatus for secure identification of a mobile user in a communication network
JP3437291B2 (ja) 1994-11-14 2003-08-18 キヤノン株式会社 再生装置および再生方法
US6169910B1 (en) * 1994-12-30 2001-01-02 Focused Energy Holding Inc. Focused narrow beam communication system
US5684491A (en) 1995-01-27 1997-11-04 Hazeltine Corporation High gain antenna systems for cellular use
EP0740431B1 (en) 1995-04-28 2005-09-14 Alcatel Method for TDMA management, central station, terminal station and network system to perform this method
US5612978A (en) * 1995-05-30 1997-03-18 Motorola, Inc. Method and apparatus for real-time adaptive interference cancellation in dynamic environments
US6535666B1 (en) 1995-06-02 2003-03-18 Trw Inc. Method and apparatus for separating signals transmitted over a waveguide
US6018317A (en) 1995-06-02 2000-01-25 Trw Inc. Cochannel signal processing system
US6215983B1 (en) 1995-06-02 2001-04-10 Trw Inc. Method and apparatus for complex phase equalization for use in a communication system
US5726978A (en) * 1995-06-22 1998-03-10 Telefonaktiebolaget L M Ericsson Publ. Adaptive channel allocation in a frequency division multiplexed system
FI99252C (fi) 1995-07-03 1997-12-29 Nokia Mobile Phones Ltd Yhdistetty radiosignaalin modulointi- ja monikäyttömenetelmä
US6154484A (en) 1995-09-06 2000-11-28 Solana Technology Development Corporation Method and apparatus for embedding auxiliary data in a primary data signal using frequency and time domain processing
US5815488A (en) 1995-09-28 1998-09-29 Cable Television Laboratories, Inc. Multiple user access method using OFDM
DE69633705T2 (de) 1995-11-16 2006-02-02 Ntt Mobile Communications Network Inc. Verfahren zum Erfassen eines digitalen Signals und Detektor
JPH09139725A (ja) 1995-11-16 1997-05-27 Matsushita Electric Ind Co Ltd 多重通信装置
JP2812318B2 (ja) 1995-11-29 1998-10-22 日本電気株式会社 スペクトラム拡散通信方法及び装置
US5887023A (en) 1995-11-29 1999-03-23 Nec Corporation Method and apparatus for a frequency hopping-spread spectrum communication system
KR0150275B1 (ko) 1995-12-22 1998-11-02 양승택 멀티캐스트 통신의 폭주 제어방법
EP0786889B1 (en) 1996-02-02 2002-04-17 Deutsche Thomson-Brandt Gmbh Method for the reception of multicarrier signals and related apparatus
US6088592A (en) 1996-03-25 2000-07-11 Airnet Communications Corporation Wireless system plan using in band-translators with diversity backhaul to enable efficient depolyment of high capacity base transceiver systems
US6134215A (en) 1996-04-02 2000-10-17 Qualcomm Incorpoated Using orthogonal waveforms to enable multiple transmitters to share a single CDM channel
US5822368A (en) 1996-04-04 1998-10-13 Lucent Technologies Inc. Developing a channel impulse response by using distortion
JPH09281508A (ja) * 1996-04-12 1997-10-31 Semiconductor Energy Lab Co Ltd 液晶表示装置およびその作製方法
GB9609148D0 (en) 1996-05-01 1996-07-03 Plessey Telecomm Multi-party communication
US5790537A (en) 1996-05-15 1998-08-04 Mcgill University Interference suppression in DS-CDMA systems
EP0807989B1 (en) 1996-05-17 2001-06-27 Motorola Ltd Devices for transmitter path weights and methods therefor
US5926470A (en) 1996-05-22 1999-07-20 Qualcomm Incorporated Method and apparatus for providing diversity in hard handoff for a CDMA system
GB9611146D0 (en) 1996-05-29 1996-07-31 Philips Electronics Nv Method of, and system for, transmitting messages
US5732113A (en) 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
KR980007105A (ko) 1996-06-28 1998-03-30 김광호 이동국 송신전력 제어방법
US6909797B2 (en) 1996-07-10 2005-06-21 R2 Technology, Inc. Density nodule detection in 3-D digital images
US6058309A (en) 1996-08-09 2000-05-02 Nortel Networks Corporation Network directed system selection for cellular and PCS enhanced roaming
US6141317A (en) 1996-08-22 2000-10-31 Tellabs Operations, Inc. Apparatus and method for bandwidth management in a multi-point OFDM/DMT digital communications system
US6233456B1 (en) 1996-09-27 2001-05-15 Qualcomm Inc. Method and apparatus for adjacent coverage area handoff in communication systems
JP3444114B2 (ja) 1996-11-22 2003-09-08 ソニー株式会社 通信方法、基地局及び端末装置
US5956642A (en) 1996-11-25 1999-09-21 Telefonaktiebolaget L M Ericsson Adaptive channel allocation method and apparatus for multi-slot, multi-carrier communication system
US6061337A (en) 1996-12-02 2000-05-09 Lucent Technologies Inc. System and method for CDMA handoff using telemetry to determine the need for handoff and to select the destination cell site
EP0848563A3 (en) 1996-12-11 2000-01-05 Texas Instruments Incorporated Improvements in or relating to telecommunication systems
KR100221336B1 (ko) 1996-12-28 1999-09-15 전주범 직교 주파수 분할 다중화 수신 시스템의 프레임 동기 장치 및 그 방법
US5953325A (en) 1997-01-02 1999-09-14 Telefonaktiebolaget L M Ericsson (Publ) Forward link transmission mode for CDMA cellular communications system using steerable and distributed antennas
US6232918B1 (en) * 1997-01-08 2001-05-15 Us Wireless Corporation Antenna array calibration in wireless communication systems
US6173007B1 (en) 1997-01-15 2001-01-09 Qualcomm Inc. High-data-rate supplemental channel for CDMA telecommunications system
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US5920571A (en) 1997-02-07 1999-07-06 Lucent Technologies Inc. Frequency channel and time slot assignments in broadband access networks
US6335922B1 (en) * 1997-02-11 2002-01-01 Qualcomm Incorporated Method and apparatus for forward link rate scheduling
WO1998037706A2 (en) 1997-02-21 1998-08-27 Motorola Inc. Method and apparatus for allocating spectral resources in a wireless communication system
US6359923B1 (en) 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
US6584144B2 (en) 1997-02-24 2003-06-24 At&T Wireless Services, Inc. Vertical adaptive antenna array for a discrete multitone spread spectrum communications system
US5838268A (en) 1997-03-14 1998-11-17 Orckit Communications Ltd. Apparatus and methods for modulation and demodulation of data
US5974310A (en) 1997-03-20 1999-10-26 Omnipoint Corporation Communication control for a user of a central communication center
FI104610B (fi) 1997-03-27 2000-02-29 Nokia Networks Oy Ohjauskanavan allokointi pakettiradioverkossa
US6175550B1 (en) * 1997-04-01 2001-01-16 Lucent Technologies, Inc. Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof
KR100242421B1 (ko) 1997-04-14 2000-02-01 윤종용 디지털 이동 통신시스템의 파이롯트 피엔 오프셋 할당 방법
FI106605B (fi) 1997-04-16 2001-02-28 Nokia Networks Oy Autentikointimenetelmä
US6076114A (en) 1997-04-18 2000-06-13 International Business Machines Corporation Methods, systems and computer program products for reliable data transmission over communications networks
FI105136B (fi) 1997-04-21 2000-06-15 Nokia Mobile Phones Ltd Yleinen pakettiradiopalvelu
FI104939B (fi) 1997-04-23 2000-04-28 Nokia Networks Oy Merkinannon toteutus tietoliikenneverkossa
EP1841272B1 (en) 1997-04-24 2017-02-15 Ntt Mobile Communications Network Inc. Method and mobile station for mobile communications
KR100241894B1 (ko) 1997-05-07 2000-02-01 윤종용 개인통신 시스템의 코드분할 접속방식 기지국 시스템에서 소프트웨어 관리방법
US6075814A (en) 1997-05-09 2000-06-13 Broadcom Homenetworking, Inc. Method and apparatus for reducing signal processing requirements for transmitting packet-based data with a modem
JP2879030B2 (ja) 1997-05-16 1999-04-05 株式会社次世代デジタルテレビジョン放送システム研究所 Ｏｆｄｍ送信装置及び受信装置とｏｆｄｍ送信方法及び受信方法
FI105063B (fi) 1997-05-16 2000-05-31 Nokia Networks Oy Menetelmä lähetyssuunnan määrittämiseksi ja radiojärjestelmä
US6374115B1 (en) 1997-05-28 2002-04-16 Transcrypt International/E.F. Johnson Method and apparatus for trunked radio repeater communications with backwards compatibility
DK0985325T3 (da) 1997-05-30 2007-09-03 Qualcomm Inc Fremgangsmåde og apparat til paging af en trådlös terminal i et trådlöst telekommunikationssystem
SE9702271D0 (sv) 1997-06-13 1997-06-13 Ericsson Telefon Ab L M Återanvändning av fysisk kontrollkanal i ett distribuerat cellulärt radiokommunikationssystem
US6052364A (en) 1997-06-13 2000-04-18 Comsat Corporation CDMA system architecture for satcom terminals
US6151296A (en) 1997-06-19 2000-11-21 Qualcomm Incorporated Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals
US5867478A (en) * 1997-06-20 1999-02-02 Motorola, Inc. Synchronous coherent orthogonal frequency division multiplexing system, method, software and device
US6240129B1 (en) 1997-07-10 2001-05-29 Alcatel Method and windowing unit to reduce leakage, fourier transformer and DMT modem wherein the unit is used
US6038150A (en) 1997-07-23 2000-03-14 Yee; Hsian-Pei Transistorized rectifier for a multiple output converter
US6038263A (en) 1997-07-31 2000-03-14 Motorola, Inc. Method and apparatus for transmitting signals in a communication system
US6307849B1 (en) 1997-09-08 2001-10-23 Qualcomm Incorporated Method and system for changing forward traffic channel power allocation during soft handoff
KR100365346B1 (ko) 1997-09-09 2003-04-11 삼성전자 주식회사 이동통신시스템의쿼시직교부호생성및쿼시직교부호를이용한대역확산장치및방법
US6038450A (en) 1997-09-12 2000-03-14 Lucent Technologies, Inc. Soft handover system for a multiple sub-carrier communication system and method thereof
US6377809B1 (en) 1997-09-16 2002-04-23 Qualcomm Incorporated Channel structure for communication systems
US6577739B1 (en) 1997-09-19 2003-06-10 University Of Iowa Research Foundation Apparatus and methods for proportional audio compression and frequency shifting
US6058105A (en) 1997-09-26 2000-05-02 Lucent Technologies Inc. Multiple antenna communication system and method thereof
US6075797A (en) 1997-10-17 2000-06-13 3Com Corporation Method and system for detecting mobility of a wireless-capable modem to minimize data transfer rate renegotiations
US7184426B2 (en) * 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
KR100369602B1 (ko) 1997-11-03 2003-04-11 삼성전자 주식회사 부호분할다중접속방식이동통신시스템의전력제어비트삽입방법
US5995992A (en) 1997-11-17 1999-11-30 Bull Hn Information Systems Inc. Conditional truncation indicator control for a decimal numeric processor employing result truncation
US6108323A (en) 1997-11-26 2000-08-22 Nokia Mobile Phones Limited Method and system for operating a CDMA cellular system having beamforming antennas
US5971484A (en) 1997-12-03 1999-10-26 Steelcase Development Inc. Adjustable armrest for chairs
US6067315A (en) 1997-12-04 2000-05-23 Telefonaktiebolaget Lm Ericsson Method and apparatus for coherently-averaged power estimation
US6563806B1 (en) 1997-12-12 2003-05-13 Hitachi, Ltd. Base station for multi-carrier TDMA mobile communication system and method for assigning communication channels
US6222832B1 (en) 1998-06-01 2001-04-24 Tantivy Communications, Inc. Fast Acquisition of traffic channels for a highly variable data rate reverse link of a CDMA wireless communication system
US6393008B1 (en) 1997-12-23 2002-05-21 Nokia Movile Phones Ltd. Control structures for contention-based packet data services in wideband CDMA
JPH11191756A (ja) 1997-12-25 1999-07-13 Nec Corp Ｐｈｓ（登録商標）によるデータ通信装置及び方法
JPH11196109A (ja) 1997-12-26 1999-07-21 Canon Inc 無線情報通信システム
DE19800653A1 (de) 1998-01-09 1999-07-15 Albert M Huber Vorrichtung zum Abtrennen von Partikeln, oder von Partikeln und Gasen, oder von Fluiden anderer Dichte aus Flüssigkeiten, oder Suspensionen, oder Emulsionen, die ein feststehendes Gehäuse besitzt und mit Hilfe der Zentrifugalkraft separiert und auch diese obengenannten Medien durch diese Vorrichtung und eventuell nachgeschaltete Mittel fördert
DE19800953C1 (de) 1998-01-13 1999-07-29 Siemens Ag Verfahren und Funk-Kommunikationssystem zur Zuteilung von Funkressourcen einer Funkschnittstelle
US6175650B1 (en) 1998-01-26 2001-01-16 Xerox Corporation Adaptive quantization compatible with the JPEG baseline sequential mode
US5955992A (en) 1998-02-12 1999-09-21 Shattil; Steve J. Frequency-shifted feedback cavity used as a phased array antenna controller and carrier interference multiple access spread-spectrum transmitter
DE69908516T2 (de) 1998-02-14 2003-12-11 Samsung Electronics Co., Ltd. Daten kommunikationsgerät und verfahren für mobile kommunikationsanordnung mit zugeteiltem kontrollkanal
JP3589851B2 (ja) 1998-02-20 2004-11-17 株式会社日立製作所 パケット通信システム及びパケット通信装置
EP1059012A1 (de) 1998-02-27 2000-12-13 Siemens Aktiengesellschaft Telekommunikationssysteme mit drahtloser, auf code- und zeitmultiplex basierender telekommunikation zwischen mobilen und/oder stationären sende-/empfangsgeräten
JP3199020B2 (ja) 1998-02-27 2001-08-13 日本電気株式会社 音声音楽信号の符号化装置および復号装置
KR100381933B1 (ko) 1998-02-27 2003-04-26 지멘스 악티엔게젤샤프트 코드 및 시분할 멀티플렉스를 기초로 하는 통신 시스템
DE29924422U1 (de) 1998-03-14 2003-03-13 Samsung Electronics Co., Ltd., Suwon, Kyonggi Vorrichtung zum Austauschen von Rahmen-Nachrichten unterschiedlicher Längen in einem CDMA-Kommunikationssystem
EP1064736B1 (en) 1998-03-23 2005-11-02 Samsung Electronics Co., Ltd. Power control device and method for controlling a reverse link common channel in a cdma communication system
WO1999052250A1 (en) 1998-04-03 1999-10-14 Tellabs Operations, Inc. Filter for impulse response shortening, with addition spectral constraints, for multicarrier transmission
US6112094A (en) 1998-04-06 2000-08-29 Ericsson Inc. Orthogonal frequency hopping pattern re-use scheme
JPH11298954A (ja) 1998-04-08 1999-10-29 Hitachi Ltd 無線通信方法及び無線通信装置
US6353620B1 (en) 1998-04-09 2002-03-05 Ericsson Inc. System and method for facilitating inter-nodal protocol agreement in a telecommunications
US6816477B1 (en) 1998-04-21 2004-11-09 Thomson Licensing S.A. Transmission method in a domestic communication system comprising a wireless channel
US6567425B1 (en) 1998-04-23 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Bearer independent signaling protocol
US6075350A (en) 1998-04-24 2000-06-13 Lockheed Martin Energy Research Corporation Power line conditioner using cascade multilevel inverters for voltage regulation, reactive power correction, and harmonic filtering
US6198775B1 (en) 1998-04-28 2001-03-06 Ericsson Inc. Transmit diversity method, systems, and terminals using scramble coding
KR100383575B1 (ko) 1998-05-12 2004-06-26 삼성전자주식회사 단말기의송신전력에서피크전력대평균전력비를줄이기위한확산변조방법및장치
BR9906499A (pt) 1998-05-12 2000-09-26 Samsung Electronics Co Ltd Soc Processo e dispositivo para a redução da razão de energia de pico para média da energia de transmissão de uma estação móvel em um sistema de comunicação móvel.
JP3955680B2 (ja) 1998-05-12 2007-08-08 株式会社エヌ・ティ・ティ・ドコモ 時分割通信方式の移動通信システムにおける無線チャネルアクセス方法、その方法を使用する基地局及び移動局
GB2337414A (en) 1998-05-14 1999-11-17 Fujitsu Ltd Soft handoff in cellular communications networks
US6643275B1 (en) 1998-05-15 2003-11-04 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system
KR100291476B1 (ko) 1998-05-25 2001-07-12 윤종용 파일럿측정요구명령제어방법및시스템
JP2000004215A (ja) 1998-06-16 2000-01-07 Matsushita Electric Ind Co Ltd 送受信システム
JP3092798B2 (ja) 1998-06-30 2000-09-25 日本電気株式会社 適応送受信装置
JP2000022618A (ja) 1998-07-03 2000-01-21 Hitachi Ltd 基地局およびアンテナビームの制御方法
RU2141706C1 (ru) 1998-07-06 1999-11-20 Военная академия связи Способ и устройство адаптивной пространственной фильтрации сигналов
KR100318959B1 (ko) 1998-07-07 2002-04-22 윤종용 부호분할다중접속통신시스템의서로다른부호간의간섭을제거하는장치및방법
US6621809B1 (en) 1998-07-12 2003-09-16 Samsung Electronics Co., Ltd. Device and method for gating transmission in a CDMA mobile communication system
JP4310920B2 (ja) 1998-07-13 2009-08-12 ソニー株式会社 送信機、送信方法、受信機及び受信方法
CA2302269C (en) 1998-07-16 2003-11-04 Samsung Electronics Co., Ltd. Processing packet data in mobile communication system
US6636525B1 (en) 1998-08-19 2003-10-21 International Business Machines Corporation Destination dependent coding for discrete multi-tone modulation
KR100429540B1 (ko) 1998-08-26 2004-08-09 삼성전자주식회사 이동통신시스템의패킷데이터통신장치및방법
US6798736B1 (en) 1998-09-22 2004-09-28 Qualcomm Incorporated Method and apparatus for transmitting and receiving variable rate data
JP2000102065A (ja) 1998-09-24 2000-04-07 Toshiba Corp 無線通信基地局装置
CA2282942A1 (en) 1998-11-09 2000-05-09 Lucent Technologies Inc. Efficient authentication with key update
US6542485B1 (en) 1998-11-25 2003-04-01 Lucent Technologies Inc. Methods and apparatus for wireless communication using time division duplex time-slotted CDMA
US6473399B1 (en) 1998-11-30 2002-10-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for determining an optimum timeout under varying data rates in an RLC wireless system which uses a PDU counter
US6590881B1 (en) 1998-12-04 2003-07-08 Qualcomm, Incorporated Method and apparatus for providing wireless communication system synchronization
DE69815113T2 (de) 1998-12-04 2004-04-08 Lucent Technologies Inc. Fehlerverschleierung und -korrektur für Sprach-, Bild- und Videosignale
JP2000184425A (ja) 1998-12-15 2000-06-30 Toshiba Corp 無線通信基地局装置
GB2345612B (en) 1998-12-31 2003-09-03 Nokia Mobile Phones Ltd Measurement report transmission in a telecommunications system
US6654429B1 (en) 1998-12-31 2003-11-25 At&T Corp. Pilot-aided channel estimation for OFDM in wireless systems
EP1018827B1 (en) 1999-01-08 2004-05-06 Sony International (Europe) GmbH Synchronisation structure for OFDM system
US6393012B1 (en) 1999-01-13 2002-05-21 Qualcomm Inc. System for allocating resources in a communication system
US6229795B1 (en) 1999-01-13 2001-05-08 Qualcomm Incorporated System for allocating resources in a communication system
EP1021019A1 (en) 1999-01-15 2000-07-19 Sony International (Europe) GmbH Quasi-differential modulation/demodulation method for multi-amplitude digital modulated signals and OFDM system
US6584140B1 (en) 1999-01-22 2003-06-24 Systems Information And Electronic Systems Integration Inc. Spectrum efficient fast frequency-hopped modem with coherent demodulation
US6271946B1 (en) 1999-01-25 2001-08-07 Telcordia Technologies, Inc. Optical layer survivability and security system using optical label switching and high-speed optical header generation and detection
US6388998B1 (en) 1999-02-04 2002-05-14 Lucent Technologies Inc. Reuse of codes and spectrum in a CDMA system with multiple-sector cells
US6597746B1 (en) 1999-02-18 2003-07-22 Globespanvirata, Inc. System and method for peak to average power ratio reduction
US6256478B1 (en) 1999-02-18 2001-07-03 Eastman Kodak Company Dynamic packet sizing in an RF communications system
CA2262315A1 (en) 1999-02-19 2000-08-19 Northern Telecom Limited Joint optimal power balance for coded/tdm constituent data channels
US6259918B1 (en) 1999-02-26 2001-07-10 Telefonaktiebolaget Lm (Publ) Preservation of cell borders at hand-off within a smart antenna cellular system
US6487243B1 (en) 1999-03-08 2002-11-26 International Business Machines Corporation Modems, methods, and computer program products for recovering from errors in a tone reversal sequence between two modems
US6317435B1 (en) 1999-03-08 2001-11-13 Qualcomm Incorporated Method and apparatus for maximizing the use of available capacity in a communication system
US6987746B1 (en) * 1999-03-15 2006-01-17 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US6693952B1 (en) 1999-03-16 2004-02-17 Lucent Technologies Inc. Dynamic code allocation for downlink shared channels
KR20000060428A (ko) 1999-03-16 2000-10-16 윤종용 코드분할다중접속 시스템에서 기지국간 직접 연결을 이용한 소프트/소프터 핸드오프의 강화 방법
US7151761B1 (en) 1999-03-19 2006-12-19 Telefonaktiebolaget L M Ericsson (Publ) Code reservation for interference measurement in a CDMA radiocommunication system
US6483820B1 (en) 1999-03-22 2002-11-19 Ericsson Inc. System and method for dynamic radio resource allocation for non-transparent high-speed circuit-switched data services
US6430401B1 (en) 1999-03-29 2002-08-06 Lucent Technologies Inc. Technique for effectively communicating multiple digital representations of a signal
GB2348776B (en) 1999-04-06 2003-07-09 Motorola Ltd A communications network and method of allocating resource thefor
US6249683B1 (en) 1999-04-08 2001-06-19 Qualcomm Incorporated Forward link power control of multiple data streams transmitted to a mobile station using a common power control channel
US6937665B1 (en) 1999-04-19 2005-08-30 Interuniversitaire Micron Elektronica Centrum Method and apparatus for multi-user transmission
US6614857B1 (en) 1999-04-23 2003-09-02 Lucent Technologies Inc. Iterative channel estimation and compensation based thereon
JP4224168B2 (ja) 1999-04-23 2009-02-12 パナソニック株式会社 基地局装置及びピーク電力抑圧方法
CN1156093C (zh) 1999-05-12 2004-06-30 三星电子株式会社 移动通信系统的基站中支持非连续传输模式的方法
JP3236273B2 (ja) 1999-05-17 2001-12-10 三菱電機株式会社 マルチキャリア伝送システムおよびマルチキャリア変調方法
US6445917B1 (en) 1999-05-19 2002-09-03 Telefonaktiebolaget Lm Ericsson (Publ) Mobile station measurements with event-based reporting
US6674787B1 (en) 1999-05-19 2004-01-06 Interdigital Technology Corporation Raising random access channel packet payload
US6674810B1 (en) * 1999-05-27 2004-01-06 3Com Corporation Method and apparatus for reducing peak-to-average power ratio in a discrete multi-tone signal
JP2001057545A (ja) 1999-06-02 2001-02-27 Texas Instr Inc <Ti> スペクトラム拡散チャネルの推定方法と装置
US6631126B1 (en) 1999-06-11 2003-10-07 Lucent Technologies Inc. Wireless communications using circuit-oriented and packet-oriented frame selection/distribution functions
US6539213B1 (en) 1999-06-14 2003-03-25 Time Domain Corporation System and method for impulse radio power control
FR2794915A1 (fr) 1999-06-14 2000-12-15 Canon Kk Procede et dispositif d'emission, procede et dispositif de reception, et systemes les mettant en oeuvre
US7095708B1 (en) 1999-06-23 2006-08-22 Cingular Wireless Ii, Llc Methods and apparatus for use in communicating voice and high speed data in a wireless communication system
US6363060B1 (en) 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
JP3518426B2 (ja) 1999-06-30 2004-04-12 Ｋｄｄｉ株式会社 Ｃｄｍａ移動通信システムにおける符号割当方法
US6657949B1 (en) 1999-07-06 2003-12-02 Cisco Technology, Inc. Efficient request access for OFDM systems
JP2003506525A (ja) 1999-07-28 2003-02-18 チバ スペシャルティ ケミカルズ ホールディング インコーポレーテッド サレン型マンガン錯体の水溶性顆粒
US6831943B1 (en) 1999-08-13 2004-12-14 Texas Instruments Incorporated Code division multiple access wireless system with closed loop mode using ninety degree phase rotation and beamformer verification
JP2001069046A (ja) 1999-08-30 2001-03-16 Fujitsu Ltd 送受信システムおよび受信装置
US6542743B1 (en) 1999-08-31 2003-04-01 Qualcomm, Incorporated Method and apparatus for reducing pilot search times utilizing mobile station location information
US6765969B1 (en) 1999-09-01 2004-07-20 Motorola, Inc. Method and device for multi-user channel estimation
US6928047B1 (en) 1999-09-11 2005-08-09 The University Of Delaware Precoded OFDM systems robust to spectral null channels and vector OFDM systems with reduced cyclic prefix length
US6633614B1 (en) 1999-09-15 2003-10-14 Telcordia Technologies, Inc. Multicarrier personal access communication system
RU2242091C2 (ru) 1999-10-02 2004-12-10 Самсунг Электроникс Ко., Лтд. Устройство и способ стробирования данных, передаваемых по каналу управления в системе связи мдкр
JP3961829B2 (ja) 1999-10-02 2007-08-22 サムスン エレクトロニクス カンパニー リミテッド 符号分割多重接続通信システムの制御チャネル信号を断続的に送受信する装置及び方法
US6870882B1 (en) * 1999-10-08 2005-03-22 At&T Corp. Finite-length equalization over multi-input multi-output channels
US6337659B1 (en) * 1999-10-25 2002-01-08 Gamma Nu, Inc. Phased array base station antenna system having distributed low power amplifiers
US6985466B1 (en) * 1999-11-09 2006-01-10 Arraycomm, Inc. Downlink signal processing in CDMA systems utilizing arrays of antennae
US6721568B1 (en) 1999-11-10 2004-04-13 Telefonaktiebolaget Lm Ericsson (Publ) Admission control in a mobile radio communications system
KR100602022B1 (ko) 1999-12-15 2006-07-20 유티스타콤코리아 유한회사 이동통신 시스템에서 동기식 기지국과 비동기식 기지국간핸드오프에 필요한 파라메타 전송방법
WO2001037587A2 (en) 1999-11-17 2001-05-25 Telefonaktiebolaget Lm Ericsson (Publ) Acceleration dependent channel switching in mobile telecommunications
US6466800B1 (en) 1999-11-19 2002-10-15 Siemens Information And Communication Mobile, Llc Method and system for a wireless communication system incorporating channel selection algorithm for 2.4 GHz direct sequence spread spectrum cordless telephone system
JP3289718B2 (ja) 1999-11-24 2002-06-10 日本電気株式会社 時分割多重アクセス方法及び基準局装置、端末局装置
KR100357631B1 (ko) 1999-11-29 2002-10-25 삼성전자 주식회사 부호분할다중접속 통신시스템의 공통패킷채널의 채널 할당방법 및 장치
DE19957288C1 (de) 1999-11-29 2001-05-10 Siemens Ag Verfahren zur Signalisierung einer Funkkanalstruktur in einem Funk-Kommunikationssystem
US6763009B1 (en) 1999-12-03 2004-07-13 Lucent Technologies Inc. Down-link transmission scheduling in CDMA data networks
US6351499B1 (en) 1999-12-15 2002-02-26 Iospan Wireless, Inc. Method and wireless systems using multiple antennas and adaptive control for maximizing a communication parameter
US6690951B1 (en) * 1999-12-20 2004-02-10 Telefonaktiebolaget Lm Ericsson (Publ) Dynamic size allocation system and method
CA2327734A1 (en) 1999-12-21 2001-06-21 Eta Sa Fabriques D'ebauches Ultra-thin piezoelectric resonator
US6628673B1 (en) 1999-12-29 2003-09-30 Atheros Communications, Inc. Scalable communication system using overlaid signals and multi-carrier frequency communication
US6678318B1 (en) * 2000-01-11 2004-01-13 Agere Systems Inc. Method and apparatus for time-domain equalization in discrete multitone transceivers
US6831942B2 (en) 2000-01-14 2004-12-14 University Of Hong Kong MPSK spread spectrum communications receiver with carrier recovery and tracking using weighted correlation techniques
US7463600B2 (en) 2000-01-20 2008-12-09 Nortel Networks Limited Frame structure for variable rate wireless channels transmitting high speed data
US6907020B2 (en) 2000-01-20 2005-06-14 Nortel Networks Limited Frame structures supporting voice or streaming communications with high speed data communications in wireless access networks
US6804307B1 (en) 2000-01-27 2004-10-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient transmit diversity using complex space-time block codes
KR100387034B1 (ko) 2000-02-01 2003-06-11 삼성전자주식회사 무선통신 시스템의 패킷데이타 서비스를 위한스케듈링장치 및 방법
FI117465B (fi) 2000-02-03 2006-10-31 Danisco Sweeteners Oy Menetelmä pureskeltavien ytimien kovapinnoittamiseksi
US6754511B1 (en) 2000-02-04 2004-06-22 Harris Corporation Linear signal separation using polarization diversity
WO2001059968A1 (en) 2000-02-09 2001-08-16 Golden Bridge Technology, Inc. Collision avoidance
US6546248B1 (en) 2000-02-10 2003-04-08 Qualcomm, Incorporated Method and apparatus for generating pilot strength measurement messages
JP3826653B2 (ja) 2000-02-25 2006-09-27 Ｋｄｄｉ株式会社 無線通信システムのサブキャリア割当方法
JP2003526238A (ja) 2000-02-29 2003-09-02 エイチアールエル ラボラトリーズ，エルエルシー 共同移動アンテナシステム
JP2001245355A (ja) 2000-03-01 2001-09-07 Mitsubishi Electric Corp 移動通信におけるパケット伝送システム
JP2001249802A (ja) 2000-03-07 2001-09-14 Sony Corp 伝送方法、伝送システム、伝送制御装置及び入力装置
KR100493068B1 (ko) 2000-03-08 2005-06-02 삼성전자주식회사 이동통신시스템에서 피드백 정보를 이용하는 반맹목적방식의 송신안테나어레이 장치 및 방법
EP1266463B1 (en) 2000-03-15 2006-06-21 Nokia Corporation Transmit diversity method and system
US6473467B1 (en) 2000-03-22 2002-10-29 Qualcomm Incorporated Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system
US6940845B2 (en) 2000-03-23 2005-09-06 At & T, Corp. Asymmetric measurement-based dynamic packet assignment system and method for wireless data services
JP2001285927A (ja) 2000-03-29 2001-10-12 Matsushita Electric Ind Co Ltd 通信端末装置及び無線通信方法
US6493331B1 (en) 2000-03-30 2002-12-10 Qualcomm Incorporated Method and apparatus for controlling transmissions of a communications systems
DE60021772T2 (de) 2000-04-07 2006-04-20 Nokia Corp. Verfahren und vorrichtung zur übertragung mit mehreren antennen
US7289570B2 (en) * 2000-04-10 2007-10-30 Texas Instruments Incorporated Wireless communications
US6934275B1 (en) 2000-04-17 2005-08-23 Motorola, Inc. Apparatus and method for providing separate forward dedicated and shared control channels in a communications system
US6954481B1 (en) 2000-04-18 2005-10-11 Flarion Technologies, Inc. Pilot use in orthogonal frequency division multiplexing based spread spectrum multiple access systems
US6961364B1 (en) 2000-04-18 2005-11-01 Flarion Technologies, Inc. Base station identification in orthogonal frequency division multiplexing based spread spectrum multiple access systems
US6807146B1 (en) 2000-04-21 2004-10-19 Atheros Communications, Inc. Protocols for scalable communication system using overland signals and multi-carrier frequency communication
EP1277317A2 (en) 2000-04-22 2003-01-22 Atheros Communications, Inc. Multi-carrier communication systems employing variable ofdm-symbol rates and number of carriers
US6748220B1 (en) 2000-05-05 2004-06-08 Nortel Networks Limited Resource allocation in wireless networks
US6519462B1 (en) * 2000-05-11 2003-02-11 Lucent Technologies Inc. Method and apparatus for multi-user resource management in wireless communication systems
FI20001133A (fi) * 2000-05-12 2001-11-13 Nokia Corp Menetelmä päätelaitteiden ja yhteysaseman välisen tiedonsiirron järjestämiseksi tiedonsiirtojärjestelmässä
FI20001160A (fi) 2000-05-15 2001-11-16 Nokia Networks Oy Pilottisignaalin toteuttamismenetelmä
EP1156617B1 (en) 2000-05-17 2003-09-10 Matsushita Electric Industrial Co., Ltd. Hybrid ARQ method for packet data transmission
US6529525B1 (en) 2000-05-19 2003-03-04 Motorola, Inc. Method for supporting acknowledged transport layer protocols in GPRS/edge host application
KR100370746B1 (ko) 2000-05-30 2003-02-05 한국전자통신연구원 다차원 직교 자원 도약 다중화 통신 방식 및 장치
CA2310188A1 (en) 2000-05-30 2001-11-30 Mark J. Frazer Communication structure with channels configured responsive to reception quality
GB2363256B (en) 2000-06-07 2004-05-12 Motorola Inc Adaptive antenna array and method of controlling operation thereof
US6839325B2 (en) 2000-06-09 2005-01-04 Texas Instruments Incorporated Wireless communication system which uses ARQ packets to ACK a plurality of packets from an 802.15 superpacket
US7248841B2 (en) 2000-06-13 2007-07-24 Agee Brian G Method and apparatus for optimization of wireless multipoint electromagnetic communication networks
US6701165B1 (en) 2000-06-21 2004-03-02 Agere Systems Inc. Method and apparatus for reducing interference in non-stationary subscriber radio units using flexible beam selection
US6337983B1 (en) * 2000-06-21 2002-01-08 Motorola, Inc. Method for autonomous handoff in a wireless communication system
US20020015405A1 (en) * 2000-06-26 2002-02-07 Risto Sepponen Error correction of important fields in data packet communications in a digital mobile radio network
JP2002016531A (ja) 2000-06-27 2002-01-18 Nec Corp Ｃｄｍａ通信方式及びその方法
JP2002026790A (ja) 2000-07-03 2002-01-25 Matsushita Electric Ind Co Ltd 無線通信装置及び無線通信方法
DE10032426B4 (de) 2000-07-04 2006-01-12 Siemens Ag Strahlformungsverfahren
JP4212353B2 (ja) 2000-07-11 2009-01-21 財団法人神奈川科学技術アカデミー 液状試料の質量分析用プローブ
IT1318161B1 (it) 2000-07-14 2003-07-23 Cit Alcatel Metodo e dispositivo per il recupero di portante in sistemi ofdm
FR2814301B1 (fr) 2000-07-17 2004-11-12 Telediffusion De France Tdf Synchronisation d'un signal amrf
US7418043B2 (en) 2000-07-19 2008-08-26 Lot 41 Acquisition Foundation, Llc Software adaptable high performance multicarrier transmission protocol
WO2002009334A1 (fr) 2000-07-26 2002-01-31 Mitsubishi Denki Kabushiki Kaisha Dispositif de communication a acces multiple par repartition de code (amrc) multiporteuse, dispositif d'emission amrc multiporteuse et dispositif de reception amrc multiporteuse
GB2366938B (en) * 2000-08-03 2004-09-01 Orange Personal Comm Serv Ltd Authentication in a mobile communications network
DE10039429A1 (de) 2000-08-11 2002-03-07 Siemens Ag Verfahren zur Signalübertragung in einem Funk-Kommunikationssystem
GB0020088D0 (en) 2000-08-15 2000-10-04 Fujitsu Ltd Adaptive beam forming
US6980540B1 (en) 2000-08-16 2005-12-27 Lucent Technologies Inc. Apparatus and method for acquiring an uplink traffic channel, in wireless communications systems
US6487184B1 (en) 2000-08-25 2002-11-26 Motorola, Inc. Method and apparatus for supporting radio acknowledgement information for a uni-directional user data channel
US6985434B2 (en) 2000-09-01 2006-01-10 Nortel Networks Limited Adaptive time diversity and spatial diversity for OFDM
US6850481B2 (en) * 2000-09-01 2005-02-01 Nortel Networks Limited Channels estimation for multiple input—multiple output, orthogonal frequency division multiplexing (OFDM) system
US6937592B1 (en) 2000-09-01 2005-08-30 Intel Corporation Wireless communications system that supports multiple modes of operation
US6898441B1 (en) 2000-09-12 2005-05-24 Lucent Technologies Inc. Communication system having a flexible transmit configuration
US9130810B2 (en) 2000-09-13 2015-09-08 Qualcomm Incorporated OFDM communications methods and apparatus
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
US6694147B1 (en) 2000-09-15 2004-02-17 Flarion Technologies, Inc. Methods and apparatus for transmitting information between a basestation and multiple mobile stations
US6802035B2 (en) 2000-09-19 2004-10-05 Intel Corporation System and method of dynamically optimizing a transmission mode of wirelessly transmitted information
US6842487B1 (en) 2000-09-22 2005-01-11 Telefonaktiebolaget Lm Ericsson (Publ) Cyclic delay diversity for mitigating intersymbol interference in OFDM systems
US6658258B1 (en) 2000-09-29 2003-12-02 Lucent Technologies Inc. Method and apparatus for estimating the location of a mobile terminal
US6778513B2 (en) 2000-09-29 2004-08-17 Arraycomm, Inc. Method and apparatus for separting multiple users in a shared-channel communication system
US7349371B2 (en) 2000-09-29 2008-03-25 Arraycomm, Llc Selecting random access channels
US6496790B1 (en) 2000-09-29 2002-12-17 Intel Corporation Management of sensors in computer systems
JP2002111556A (ja) 2000-10-02 2002-04-12 Ntt Docomo Inc 基地局装置
KR100452536B1 (ko) 2000-10-02 2004-10-12 가부시키가이샤 엔.티.티.도코모 이동통신기지국 장치
US7072315B1 (en) 2000-10-10 2006-07-04 Adaptix, Inc. Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks
FR2815507B1 (fr) 2000-10-16 2003-01-31 Cit Alcatel Procede de gestion des ressources radio dans un reseau de telecommunication interactif
US6704571B1 (en) 2000-10-17 2004-03-09 Cisco Technology, Inc. Reducing data loss during cell handoffs
US6870808B1 (en) 2000-10-18 2005-03-22 Adaptix, Inc. Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks
WO2002033856A1 (en) 2000-10-20 2002-04-25 Samsung Electronics Co., Ltd Apparatus and method for determining a data rate of packet data in a mobile communication system
EP1328528B1 (en) 2000-10-20 2004-12-29 Sandoz Ag Pharmaceutical compositions comprising clavulanic acid
US6907270B1 (en) 2000-10-23 2005-06-14 Qualcomm Inc. Method and apparatus for reduced rank channel estimation in a communications system
US6788959B2 (en) 2000-10-30 2004-09-07 Nokia Corporation Method and apparatus for transmitting and receiving dynamic configuration parameters in a third generation cellular telephone network
DE60044436D1 (de) 2000-11-03 2010-07-01 Sony Deutschland Gmbh Sendeleistungsregelung für OFDM-Kommunikationsverbindungen
US6567387B1 (en) 2000-11-07 2003-05-20 Intel Corporation System and method for data transmission from multiple wireless base transceiver stations to a subscriber unit
RU2285351C2 (ru) 2000-11-07 2006-10-10 Нокиа Корпорейшн Система для планирования передачи трафика данных на основе пакетов по восходящей линии связи в системе радиосвязи
US20020090024A1 (en) 2000-11-15 2002-07-11 Tan Keng Tiong Method and apparatus for non-linear code-division multiple access technology
EP1334573B1 (en) * 2000-11-17 2006-06-14 Nokia Corporation Method for controlling the data signal weighting in multi-element transceivers and corresponding devices and telecommunications network
DE60132351T2 (de) 2000-11-28 2009-01-02 Telefonaktiebolaget Lm Ericsson (Publ) Teilnehmergerät-abbau mittels eines rufverfahrens in einem zellularen kommunikationssystem
GB0029424D0 (en) 2000-12-02 2001-01-17 Koninkl Philips Electronics Nv Radio communication system
CN1312955C (zh) 2000-12-11 2007-04-25 夏普株式会社 无线通信系统
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
CA2431849C (en) 2000-12-15 2013-07-30 Broadstrom Telecommunications, Inc. Multi-carrier communications with group-based subcarrier allocation
CA2431502C (en) 2000-12-15 2012-07-17 Broadstorm Telecommunications, Inc. Multi-carrier communications with adaptive cluster configuration and switching
US20020077152A1 (en) 2000-12-15 2002-06-20 Johnson Thomas J. Wireless communication methods and systems using multiple overlapping sectored cells
US6862268B2 (en) 2000-12-29 2005-03-01 Nortel Networks, Ltd Method and apparatus for managing a CDMA supplemental channel
US6920119B2 (en) 2001-01-09 2005-07-19 Motorola, Inc. Method for scheduling and allocating data transmissions in a broad-band communications system
US6829293B2 (en) 2001-01-16 2004-12-07 Mindspeed Technologies, Inc. Method and apparatus for line probe signal processing
US6813284B2 (en) 2001-01-17 2004-11-02 Qualcomm Incorporated Method and apparatus for allocating data streams given transmission time interval (TTI) constraints
US6801790B2 (en) 2001-01-17 2004-10-05 Lucent Technologies Inc. Structure for multiple antenna configurations
EP1227601A1 (en) 2001-01-25 2002-07-31 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Downlink scheduling using parallel code trees
US6954448B2 (en) 2001-02-01 2005-10-11 Ipr Licensing, Inc. Alternate channel for carrying selected message types
RU2192094C1 (ru) 2001-02-05 2002-10-27 Гармонов Александр Васильевич Способ когерентной разнесенной передачи сигнала
FR2820574B1 (fr) 2001-02-08 2005-08-05 Wavecom Sa Procede d'extraction d'un motif de symboles de reference servant a estimer la fonction de transfert d'un canal de transmission, signal, dispositif et procedes correspondants
US6985453B2 (en) 2001-02-15 2006-01-10 Qualcomm Incorporated Method and apparatus for link quality feedback in a wireless communication system
US7120134B2 (en) 2001-02-15 2006-10-10 Qualcomm, Incorporated Reverse link channel architecture for a wireless communication system
US6975868B2 (en) 2001-02-21 2005-12-13 Qualcomm Incorporated Method and apparatus for IS-95B reverse link supplemental code channel frame validation and fundamental code channel rate decision improvement
US20020160781A1 (en) 2001-02-23 2002-10-31 Gunnar Bark System, method and apparatus for facilitating resource allocation in a communication system
US6937641B2 (en) 2001-02-28 2005-08-30 Golden Bridge Technology, Inc. Power-controlled random access
US6930470B2 (en) 2001-03-01 2005-08-16 Nortel Networks Limited System and method for code division multiple access communication in a wireless communication environment
US6675012B2 (en) * 2001-03-08 2004-01-06 Nokia Mobile Phones, Ltd. Apparatus, and associated method, for reporting a measurement summary in a radio communication system
US6940827B2 (en) 2001-03-09 2005-09-06 Adaptix, Inc. Communication system using OFDM for one direction and DSSS for another direction
US6478422B1 (en) 2001-03-19 2002-11-12 Richard A. Hansen Single bifocal custom shooters glasses
US6934340B1 (en) 2001-03-19 2005-08-23 Cisco Technology, Inc. Adaptive control system for interference rejections in a wireless communications system
US6771706B2 (en) 2001-03-23 2004-08-03 Qualcomm Incorporated Method and apparatus for utilizing channel state information in a wireless communication system
US6748024B2 (en) 2001-03-28 2004-06-08 Nokia Corporation Non-zero complex weighted space-time code for multiple antenna transmission
US7042897B1 (en) 2001-04-05 2006-05-09 Arcwave, Inc Medium access control layer protocol in a distributed environment
US6859503B2 (en) 2001-04-07 2005-02-22 Motorola, Inc. Method and system in a transceiver for controlling a multiple-input, multiple-output communications channel
CN1246988C (zh) * 2001-04-11 2006-03-22 白桦 一种带自适应阵列的基站设备及其接收和发射方法
US7145959B2 (en) 2001-04-25 2006-12-05 Magnolia Broadband Inc. Smart antenna based spectrum multiplexing using existing pilot signals for orthogonal frequency division multiplexing (OFDM) modulations
US7230941B2 (en) 2001-04-26 2007-06-12 Qualcomm Incorporated Preamble channel decoding
US6625172B2 (en) 2001-04-26 2003-09-23 Joseph P. Odenwalder Rescheduling scheduled transmissions
US6611231B2 (en) * 2001-04-27 2003-08-26 Vivato, Inc. Wireless packet switched communication systems and networks using adaptively steered antenna arrays
US7188300B2 (en) 2001-05-01 2007-03-06 Telefonaktiebolaget Lm Ericsson (Publ) Flexible layer one for radio interface to PLMN
US7042856B2 (en) 2001-05-03 2006-05-09 Qualcomm, Incorporation Method and apparatus for controlling uplink transmissions of a wireless communication system
EP1255369A1 (en) 2001-05-04 2002-11-06 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Link adaptation for wireless MIMO transmission schemes
US6785341B2 (en) * 2001-05-11 2004-08-31 Qualcomm Incorporated Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information
US6662024B2 (en) 2001-05-16 2003-12-09 Qualcomm Incorporated Method and apparatus for allocating downlink resources in a multiple-input multiple-output (MIMO) communication system
US7047016B2 (en) 2001-05-16 2006-05-16 Qualcomm, Incorporated Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system
US7079514B2 (en) 2001-05-17 2006-07-18 Samsung Electronics Co., Ltd. Mobile communication apparatus with antenna array and mobile communication method thereof
US6751187B2 (en) 2001-05-17 2004-06-15 Qualcomm Incorporated Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel transmission
FR2825208B1 (fr) 2001-05-22 2004-07-09 Cit Alcatel Procede d'attribution de ressources en communication dans un systeme de telecommunications du type mf-tdma
KR100870557B1 (ko) 2001-05-25 2008-11-27 리전츠 어브 더 유니버시티 오브 미네소타 무선통신망에서의 공간-시간 부호화 전송 장치 및 방법
US6904097B2 (en) 2001-06-01 2005-06-07 Motorola, Inc. Method and apparatus for adaptive signaling in a QAM communication system
US20020193146A1 (en) 2001-06-06 2002-12-19 Mark Wallace Method and apparatus for antenna diversity in a wireless communication system
EP1267513A3 (en) 2001-06-11 2006-07-26 Unique Broadband Systems, Inc. Multiplexing of multicarrier signals
AU2002322131A1 (en) 2001-06-21 2003-01-08 Flarion Technologies, Inc. Method of tone allocation for tone hopping sequences
US7027523B2 (en) 2001-06-22 2006-04-11 Qualcomm Incorporated Method and apparatus for transmitting data in a time division duplexed (TDD) communication system
WO2003010984A1 (en) * 2001-06-27 2003-02-06 Nortel Networks Limited Communication of control information in wireless communication systems
AU2002316448A1 (en) 2001-06-29 2003-03-03 The Government Of The United State Of America As Represent By The Secretary Of The Department Of Hea Method of promoting engraftment of a donor transplant in a recipient host
US6963543B2 (en) 2001-06-29 2005-11-08 Qualcomm Incorporated Method and system for group call service
GB0116015D0 (en) 2001-06-29 2001-08-22 Simoco Digital Systems Ltd Communications systems
US6751444B1 (en) 2001-07-02 2004-06-15 Broadstorm Telecommunications, Inc. Method and apparatus for adaptive carrier allocation and power control in multi-carrier communication systems
JP2003018054A (ja) 2001-07-02 2003-01-17 Ntt Docomo Inc 無線通信方法及びシステム並びに通信装置
DE10132492A1 (de) 2001-07-03 2003-01-23 Hertz Inst Heinrich Adaptives Signalverarbeitungsverfahren zur bidirektionalen Funkübertragung in einem MIMO-Kanal und MIMO-System zur Verfahrensdurchführung
JP3607643B2 (ja) * 2001-07-13 2005-01-05 松下電器産業株式会社 マルチキャリア送信装置、マルチキャリア受信装置、およびマルチキャリア無線通信方法
US7197282B2 (en) * 2001-07-26 2007-03-27 Ericsson Inc. Mobile station loop-back signal processing
US7236536B2 (en) 2001-07-26 2007-06-26 Lucent Technologies Inc. Method and apparatus for detection and decoding of signals received from a linear propagation channel
US20030027579A1 (en) * 2001-08-03 2003-02-06 Uwe Sydon System for and method of providing an air interface with variable data rate by switching the bit time
JP4318412B2 (ja) 2001-08-08 2009-08-26 富士通株式会社 通信システムにおける送受信装置及び送受信方法
JP4127757B2 (ja) 2001-08-21 2008-07-30 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム、通信端末装置、及びバースト信号送信方法
US6776765B2 (en) 2001-08-21 2004-08-17 Synovis Life Technologies, Inc. Steerable stylet
KR100459557B1 (ko) 2001-08-23 2004-12-03 삼성전자주식회사 고속 순방향 패킷 접속 통신 시스템에서 데이터 상태정보를 나타내기 위한 혼화 자동 재전송 요구 채널 번호할당 방법
JP2003069472A (ja) 2001-08-24 2003-03-07 Matsushita Electric Ind Co Ltd 受信端末装置及び通信システム
KR100474689B1 (ko) 2001-08-30 2005-03-08 삼성전자주식회사 이동통신 시스템에서 소프트 핸드오프 도중의 전력제어 방법
WO2003023995A1 (en) * 2001-09-05 2003-03-20 Nokia Corporation A closed-loop signaling method for controlling multiple transmit beams and correspondingy adapted transceiver device
EP1428356B1 (en) * 2001-09-07 2007-04-25 Telefonaktiebolaget LM Ericsson (publ) Method and arrangements to achieve a dynamic resource distribution policy in packet based communication networks
FR2829642B1 (fr) 2001-09-12 2004-01-16 Eads Defence & Security Ntwk Signal multiporteuses, procede de poursuite d'un canal de transmission a partir d'un tel signal et dispositif pour sa mise en oeuvre
US7106319B2 (en) 2001-09-14 2006-09-12 Seiko Epson Corporation Power supply circuit, voltage conversion circuit, semiconductor device, display device, display panel, and electronic equipment
AU2002327681A1 (en) 2001-09-24 2003-04-07 Atheros Communications, Inc. Method and system for variable rate acknowledgement for wireless communication protocols
JP2003101515A (ja) 2001-09-25 2003-04-04 Sony Corp 無線通信システム、基地局、移動局、送信制御方法及びプログラム格納媒体
KR100440182B1 (ko) 2001-09-29 2004-07-14 삼성전자주식회사 음영지역에서의 퀵페이징 방법
RU2207723C1 (ru) 2001-10-01 2003-06-27 Военный университет связи Способ распределения ресурсов в системе электросвязи с множественным доступом
US7218906B2 (en) 2001-10-04 2007-05-15 Wisconsin Alumni Research Foundation Layered space time processing in a multiple antenna system
US7548506B2 (en) 2001-10-17 2009-06-16 Nortel Networks Limited System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design
US7248559B2 (en) 2001-10-17 2007-07-24 Nortel Networks Limited Scattered pilot pattern and channel estimation method for MIMO-OFDM systems
US7773699B2 (en) 2001-10-17 2010-08-10 Nortel Networks Limited Method and apparatus for channel quality measurements
CA2408423C (en) 2001-10-17 2013-12-24 Nec Corporation Mobile communication system, communication control method, base station and mobile station to be used in the same
JP3675433B2 (ja) 2001-10-17 2005-07-27 日本電気株式会社 移動通信システム及び通信制御方法並びにそれに用いる基地局、移動局
US7349667B2 (en) * 2001-10-19 2008-03-25 Texas Instruments Incorporated Simplified noise estimation and/or beamforming for wireless communications
KR100452639B1 (ko) 2001-10-20 2004-10-14 한국전자통신연구원 위성 이동 통신 시스템에서 공통 패킷 채널 접속 방법
KR100547847B1 (ko) 2001-10-26 2006-01-31 삼성전자주식회사 이동통신 시스템에서 역방향 링크의 제어 장치 및 방법
US7164649B2 (en) 2001-11-02 2007-01-16 Qualcomm, Incorporated Adaptive rate control for OFDM communication system
US20030086393A1 (en) 2001-11-02 2003-05-08 Subramanian Vasudevan Method for allocating wireless communication resources
US6909707B2 (en) 2001-11-06 2005-06-21 Motorola, Inc. Method and apparatus for pseudo-random noise offset reuse in a multi-sector CDMA system
US20030125040A1 (en) 2001-11-06 2003-07-03 Walton Jay R. Multiple-access multiple-input multiple-output (MIMO) communication system
US7453801B2 (en) 2001-11-08 2008-11-18 Qualcomm Incorporated Admission control and resource allocation in a communication system supporting application flows having quality of service requirements
US20030108191A1 (en) 2001-11-13 2003-06-12 Kerpez Kenneth James Method and system for spectrally compatible remote terminal ADSL deployment
GB2382265B (en) 2001-11-14 2004-06-09 Toshiba Res Europ Ltd Emergency rescue aid
SE0103853D0 (sv) * 2001-11-15 2001-11-15 Ericsson Telefon Ab L M Method and system of retransmission
JP3637965B2 (ja) 2001-11-22 2005-04-13 日本電気株式会社 無線通信システム
JP3756110B2 (ja) 2001-11-29 2006-03-15 シャープ株式会社 無線通信装置
TW595857U (en) 2001-11-29 2004-06-21 Us 091219345
JP3895165B2 (ja) 2001-12-03 2007-03-22 株式会社エヌ・ティ・ティ・ドコモ 通信制御システム、通信制御方法、通信基地局及び移動端末
US7443835B2 (en) 2001-12-03 2008-10-28 Nokia Corporation Policy based mechanisms for selecting access routers and mobile context
US7154936B2 (en) 2001-12-03 2006-12-26 Qualcomm, Incorporated Iterative detection and decoding for a MIMO-OFDM system
US6799043B2 (en) 2001-12-04 2004-09-28 Qualcomm, Incorporated Method and apparatus for a reverse link supplemental channel scheduling
JP3955463B2 (ja) 2001-12-05 2007-08-08 ソフトバンクテレコム株式会社 直交周波数分割多重通信システム
US20030112745A1 (en) 2001-12-17 2003-06-19 Xiangyang Zhuang Method and system of operating a coded OFDM communication system
US7054301B1 (en) 2001-12-31 2006-05-30 Arraycomm, Llc. Coordinated hopping in wireless networks using adaptive antenna arrays
US7020110B2 (en) 2002-01-08 2006-03-28 Qualcomm Incorporated Resource allocation for MIMO-OFDM communication systems
EP1467508B1 (en) 2002-01-10 2011-05-11 Fujitsu Limited Pilot multiplex method in ofdm system and ofdm receiving method
DE10240138A1 (de) 2002-01-18 2003-08-14 Siemens Ag Dynamische Zuordnung von Funkressourcen in einem Funk-Kommunikationssystem
US6954622B2 (en) 2002-01-29 2005-10-11 L-3 Communications Corporation Cooperative transmission power control method and system for CDMA communication systems
US7006557B2 (en) * 2002-01-31 2006-02-28 Qualcomm Incorporated Time tracking loop for diversity pilots
US20030142648A1 (en) 2002-01-31 2003-07-31 Samsung Electronics Co., Ltd. System and method for providing a continuous high speed packet data handoff
JP2003235072A (ja) 2002-02-06 2003-08-22 Ntt Docomo Inc 無線リソース割当て方法、無線リソース割当て装置及び移動通信システム
US7283508B2 (en) 2002-02-07 2007-10-16 Samsung Electronics Co., Ltd. Apparatus and method for transmitting/receiving serving HS-SCCH set information in an HSDPA communication system
US7031742B2 (en) 2002-02-07 2006-04-18 Qualcomm Incorporation Forward and reverse link power control of serving and non-serving base stations in a wireless communication system
RU2237379C2 (ru) 2002-02-08 2004-09-27 Самсунг Электроникс Способ формирования диаграммы направленности адаптивной антенной решетки базовой станции и устройство для его реализации (варианты)
WO2003069832A1 (de) 2002-02-13 2003-08-21 Siemens Aktiengesellschaft Methode zum beamforming eines mehrnutzempfängers mit kanalschätzung
IL151937A0 (en) 2002-02-13 2003-07-31 Witcom Ltd Near-field spatial multiplexing
US7009500B2 (en) 2002-02-13 2006-03-07 Ford Global Technologies, Llc Method for operating a pre-crash sensing system in a vehicle having a countermeasure system using stereo cameras
US7050759B2 (en) 2002-02-19 2006-05-23 Qualcomm Incorporated Channel quality feedback mechanism and method
JP2003249907A (ja) 2002-02-22 2003-09-05 Hitachi Kokusai Electric Inc Ｏｆｄｍ方式の伝送装置
US6862271B2 (en) 2002-02-26 2005-03-01 Qualcomm Incorporated Multiple-input, multiple-output (MIMO) systems with multiple transmission modes
US6636568B2 (en) 2002-03-01 2003-10-21 Qualcomm Data transmission with non-uniform distribution of data rates for a multiple-input multiple-output (MIMO) system
US7099299B2 (en) 2002-03-04 2006-08-29 Agency For Science, Technology And Research CDMA system with frequency domain equalization
US7039356B2 (en) 2002-03-12 2006-05-02 Blue7 Communications Selecting a set of antennas for use in a wireless communication system
KR100464014B1 (ko) 2002-03-21 2004-12-30 엘지전자 주식회사 다중 입출력 이동 통신 시스템에서의 폐루프 신호 처리 방법
US7197084B2 (en) 2002-03-27 2007-03-27 Qualcomm Incorporated Precoding for a multipath channel in a MIMO system
JP2003292667A (ja) 2002-03-29 2003-10-15 Jsr Corp 架橋発泡用熱可塑性エラストマー組成物、成形品の製造方法、および成形品
US6741587B2 (en) 2002-04-02 2004-05-25 Nokia Corporation Inter-frequency measurements with MIMO terminals
US6850741B2 (en) 2002-04-04 2005-02-01 Agency For Science, Technology And Research Method for selecting switched orthogonal beams for downlink diversity transmission
US7508804B2 (en) 2002-04-05 2009-03-24 Alcatel-Lucent Usa Inc. Shared signaling for multiple user equipment
KR100896682B1 (ko) 2002-04-09 2009-05-14 삼성전자주식회사 송/수신 다중 안테나를 포함하는 이동 통신 장치 및 방법
WO2003088538A1 (fr) 2002-04-15 2003-10-23 Matsushita Electric Industrial Co., Ltd. Recepteur et procede de reception associe
US7522673B2 (en) * 2002-04-22 2009-04-21 Regents Of The University Of Minnesota Space-time coding using estimated channel information
JP2003318857A (ja) 2002-04-25 2003-11-07 Mitsubishi Electric Corp デジタル放送受信機
ES2351438T3 (es) 2002-04-25 2011-02-04 Powerwave Cognition, Inc. Utilización dinámica de recursos inalámbricos.
US6839336B2 (en) 2002-04-29 2005-01-04 Qualcomm, Incorporated Acknowledging broadcast transmissions
US7161971B2 (en) * 2002-04-29 2007-01-09 Qualcomm, Incorporated Sending transmission format information on dedicated channels
US7170876B2 (en) 2002-04-30 2007-01-30 Qualcomm, Inc. Outer-loop scheduling design for communication systems with channel quality feedback mechanisms
US7170937B2 (en) 2002-05-01 2007-01-30 Texas Instruments Incorporated Complexity-scalable intra-frame prediction technique
US6957062B2 (en) 2002-05-09 2005-10-18 Casabyte, Inc. Method, apparatus and article to remotely associate wireless communications devices with subscriber identities and/or proxy wireless communications devices
JP4334274B2 (ja) 2002-05-16 2009-09-30 株式会社エヌ・ティ・ティ・ドコモ マルチキャリア伝送用送信機及びマルチキャリア伝送方法
KR100689399B1 (ko) 2002-05-17 2007-03-08 삼성전자주식회사 이동통신시스템에서 스마트 안테나의 순방향 송신빔 형성장치 및 방법
JP2003347985A (ja) 2002-05-22 2003-12-05 Fujitsu Ltd 無線基地局装置及びその省電力方法
JP4067873B2 (ja) 2002-05-24 2008-03-26 三菱電機株式会社 無線伝送装置
GB0212165D0 (en) 2002-05-27 2002-07-03 Nokia Corp A wireless system
US6917602B2 (en) 2002-05-29 2005-07-12 Nokia Corporation System and method for random access channel capture with automatic retransmission request
US8699505B2 (en) 2002-05-31 2014-04-15 Qualcomm Incorporated Dynamic channelization code allocation
US7899067B2 (en) 2002-05-31 2011-03-01 Cisco Technology, Inc. Method and apparatus for generating and using enhanced tree bitmap data structures in determining a longest prefix match
US7366223B1 (en) 2002-06-06 2008-04-29 Arraycomm, Llc Modifying hopping sequences in wireless networks
CN1310441C (zh) * 2002-06-07 2007-04-11 诺基亚有限公司 便于无线电通信系统中数据通信调度的装置及相关方法
KR100548311B1 (ko) 2002-06-07 2006-02-02 엘지전자 주식회사 이동 통신 시스템에서의 송신 다이버시티 장치와 방법
JP3751265B2 (ja) 2002-06-20 2006-03-01 松下電器産業株式会社 無線通信システムおよびスケジューリング方法
US7184713B2 (en) 2002-06-20 2007-02-27 Qualcomm, Incorporated Rate control for multi-channel communication systems
US7613248B2 (en) 2002-06-24 2009-11-03 Qualcomm Incorporated Signal processing with channel eigenmode decomposition and channel inversion for MIMO systems
US7095709B2 (en) 2002-06-24 2006-08-22 Qualcomm, Incorporated Diversity transmission modes for MIMO OFDM communication systems
US7483408B2 (en) * 2002-06-26 2009-01-27 Nortel Networks Limited Soft handoff method for uplink wireless communications
EP1376920B1 (de) 2002-06-27 2005-10-26 Siemens Aktiengesellschaft Anordnung und verfahren zur Datenübertragung in einem mehrfacheingabe mehrfachausgabe Funkkommunikationssystem
US20040077379A1 (en) 2002-06-27 2004-04-22 Martin Smith Wireless transmitter, transceiver and method
KR100987651B1 (ko) 2002-06-27 2010-10-13 코닌클리즈케 필립스 일렉트로닉스 엔.브이. 통신 시스템, 제 1 및 제 2 스테이션, 통신 시스템 작동방법
US7551546B2 (en) * 2002-06-27 2009-06-23 Nortel Networks Limited Dual-mode shared OFDM methods/transmitters, receivers and systems
US7372911B1 (en) * 2002-06-28 2008-05-13 Arraycomm, Llc Beam forming and transmit diversity in a multiple array radio communications system
KR100640470B1 (ko) 2002-06-29 2006-10-30 삼성전자주식회사 패킷 서비스 통신 시스템에서 전송 안테나 다이버시티방식을 사용하여 데이터를 전송 장치 및 방법
CN1219372C (zh) 2002-07-08 2005-09-14 华为技术有限公司 一种实现多媒体广播和多播业务的传输方法
KR100630112B1 (ko) 2002-07-09 2006-09-27 삼성전자주식회사 이동통신시스템의 적응형 채널 추정장치 및 방법
US7243150B2 (en) * 2002-07-10 2007-07-10 Radwin Ltd. Reducing the access delay for transmitting processed data over transmission data
US20040017785A1 (en) * 2002-07-16 2004-01-29 Zelst Allert Van System for transporting multiple radio frequency signals of a multiple input, multiple output wireless communication system to/from a central processing base station
CN102769596B (zh) 2002-07-16 2017-12-08 光学无线技术有限责任公司 发送方法和发送装置以及接收方法和接收装置
US20050259757A1 (en) 2002-07-17 2005-11-24 Soma Networks, Inc. Frequency domain equalization in communications systems with scrambling
AU2003247032A1 (en) 2002-07-17 2004-02-02 Koninklijke Philips Electronics N.V. Time-frequency interleaved mc-cdma for quasi-synchronous systems
TWI279101B (en) 2002-07-18 2007-04-11 Interdigital Tech Corp A method for reassigning codes of an orthogonal variable spreading factor code tree in a code division multiple access communication system
US7020446B2 (en) 2002-07-31 2006-03-28 Mitsubishi Electric Research Laboratories, Inc. Multiple antennas at transmitters and receivers to achieving higher diversity and data rates in MIMO systems
JP4022744B2 (ja) 2002-08-01 2007-12-19 日本電気株式会社 移動通信システム及びベストセル変更方法並びにそれに用いる基地局制御装置
AU2003257146A1 (en) 2002-08-02 2004-02-23 Nms Communications Methods and apparatus for network signal aggregation and bandwidth reduction
JP4047655B2 (ja) 2002-08-07 2008-02-13 京セラ株式会社 無線通信システム
US6788963B2 (en) 2002-08-08 2004-09-07 Flarion Technologies, Inc. Methods and apparatus for operating mobile nodes in multiple a states
US7418241B2 (en) 2002-08-09 2008-08-26 Qualcomm Incorporated System and techniques for enhancing the reliability of feedback in a wireless communications system
US7558193B2 (en) 2002-08-12 2009-07-07 Starent Networks Corporation Redundancy in voice and data communications systems
US7180627B2 (en) * 2002-08-16 2007-02-20 Paxar Corporation Hand-held portable printer with RFID read/write capability
JP3999605B2 (ja) 2002-08-23 2007-10-31 株式会社エヌ・ティ・ティ・ドコモ 基地局、移動通信システム及び通信方法
US7050405B2 (en) 2002-08-23 2006-05-23 Qualcomm Incorporated Method and system for a data transmission in a communication system
DE10238796B4 (de) 2002-08-23 2006-09-14 Siemens Ag Verfahren zur Richtungsbestimmung der Position einer Mobilstation relativ zu einer Basisstation, Mobilfunksystem sowie Einrichtung zur Richtungsbestimmung
US6985498B2 (en) * 2002-08-26 2006-01-10 Flarion Technologies, Inc. Beacon signaling in a wireless system
US6940917B2 (en) 2002-08-27 2005-09-06 Qualcomm, Incorporated Beam-steering and beam-forming for wideband MIMO/MISO systems
JP2004096142A (ja) 2002-08-29 2004-03-25 Hitachi Kokusai Electric Inc 地区エリアポーリング方式
KR100831987B1 (ko) 2002-08-30 2008-05-23 삼성전자주식회사 다중 사용자를 위한 다중 안테나를 이용한 송수신 장치
US7167916B2 (en) * 2002-08-30 2007-01-23 Unisys Corporation Computer OS dispatcher operation with virtual switching queue and IP queues
US7519032B2 (en) 2002-09-04 2009-04-14 Koninklijke Philips Electronics N.V. Apparatus and method for providing QoS service schedule and bandwidth allocation to a wireless station
IL151644A (en) 2002-09-05 2008-11-26 Fazan Comm Llc Allocation of radio resources in a cdma 2000 cellular system
US7227854B2 (en) 2002-09-06 2007-06-05 Samsung Electronics Co., Ltd. Apparatus and method for transmitting CQI information in a CDMA communication system employing an HSDPA scheme
US7260153B2 (en) 2002-09-09 2007-08-21 Mimopro Ltd. Multi input multi output wireless communication method and apparatus providing extended range and extended rate across imperfectly estimated channels
US6776165B2 (en) 2002-09-12 2004-08-17 The Regents Of The University Of California Magnetic navigation system for diagnosis, biopsy and drug delivery vehicles
WO2004028037A1 (ja) 2002-09-20 2004-04-01 Mitsubishi Denki Kabushiki Kaisha 無線通信システム
US7209712B2 (en) 2002-09-23 2007-04-24 Qualcomm, Incorporated Mean square estimation of channel quality measure
GB0222555D0 (en) 2002-09-28 2002-11-06 Koninkl Philips Electronics Nv Packet data transmission system
KR100933155B1 (ko) 2002-09-30 2009-12-21 삼성전자주식회사 주파수분할다중접속 이동통신시스템에서 가상 셀의 자원할당장치 및 방법
US7317680B2 (en) 2002-10-01 2008-01-08 Nortel Networks Limited Channel mapping for OFDM
US7412212B2 (en) 2002-10-07 2008-08-12 Nokia Corporation Communication system
JP4602641B2 (ja) 2002-10-18 2010-12-22 株式会社エヌ・ティ・ティ・ドコモ 信号伝送システム、信号伝送方法及び送信機
KR100461547B1 (ko) 2002-10-22 2004-12-16 한국전자통신연구원 디에스/시디엠에이 미모 안테나 시스템에서 보다 나은수신 다이버시티 이득을 얻기 위한 전송 시스템
US8208364B2 (en) 2002-10-25 2012-06-26 Qualcomm Incorporated MIMO system with multiple spatial multiplexing modes
US7002900B2 (en) * 2002-10-25 2006-02-21 Qualcomm Incorporated Transmit diversity processing for a multi-antenna communication system
US7477618B2 (en) 2002-10-25 2009-01-13 Qualcomm Incorporated Method and apparatus for stealing power or code for data channel operations
US8169944B2 (en) 2002-10-25 2012-05-01 Qualcomm Incorporated Random access for wireless multiple-access communication systems
US7986742B2 (en) 2002-10-25 2011-07-26 Qualcomm Incorporated Pilots for MIMO communication system
US8218609B2 (en) 2002-10-25 2012-07-10 Qualcomm Incorporated Closed-loop rate control for a multi-channel communication system
WO2004038972A1 (en) 2002-10-26 2004-05-06 Electronics And Telecommunications Research Institute Frequency hopping ofdma method using symbols of comb pattern
US7023880B2 (en) 2002-10-28 2006-04-04 Qualcomm Incorporated Re-formatting variable-rate vocoder frames for inter-system transmissions
EP1568155A4 (en) * 2002-10-29 2011-06-22 Nokia Corp LIGHT COMPLEXITY BEAMMER FOR MULTIPLE TRANSMITTERS AND RECEIVERS
US6928062B2 (en) 2002-10-29 2005-08-09 Qualcomm, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
KR101143695B1 (ko) 2002-10-30 2012-05-09 에스티 에릭슨 에스에이 트렐리스-기반 수신기와 이를 위한 프로세서 시스템, 방법 및 컴퓨터 판독가능 매체
JP2004153676A (ja) 2002-10-31 2004-05-27 Mitsubishi Electric Corp 通信装置、送信機および受信機
US6963959B2 (en) * 2002-10-31 2005-11-08 International Business Machines Corporation Storage system and method for reorganizing data to improve prefetch effectiveness and reduce seek distance
JP2004158901A (ja) 2002-11-01 2004-06-03 Kddi Corp Ｏｆｄｍ及びｍｃ−ｃｄｍａを用いる送信装置、システム及び方法
US7680507B2 (en) 2002-11-04 2010-03-16 Alcatel-Lucent Usa Inc. Shared control and signaling channel for users subscribing to data services in a communication system
JP4095881B2 (ja) 2002-11-13 2008-06-04 株式会社 サンウェイ 道路路面計画の評価方法
DE10254384B4 (de) 2002-11-17 2005-11-17 Siemens Ag Bidirektionales Signalverarbeitungsverfahren für ein MIMO-System mit einer rangadaptiven Anpassung der Datenübertragungsrate
JP4084639B2 (ja) 2002-11-19 2008-04-30 株式会社エヌ・ティ・ティ・ドコモ 移動通信における受付制御方法、移動通信システム、移動局、受付制御装置及び受付制御用プログラム
JP3796212B2 (ja) 2002-11-20 2006-07-12 松下電器産業株式会社 基地局装置及び送信割り当て制御方法
US20040098505A1 (en) 2002-11-20 2004-05-20 Clemmensen Daniel G. Forwarding system with multiple logical sub-system functionality
KR100479864B1 (ko) 2002-11-26 2005-03-31 학교법인 중앙대학교 이동 통신 시스템에서의 하향링크 신호의 구성 방법과동기화 방법 및 그 장치 그리고 이를 이용한 셀 탐색 방법
SG160204A1 (en) 2002-12-04 2010-04-29 Interdigital Tech Corp Reliability detection of channel quality indicator (cqi) and application to outer loop power control
JP4350491B2 (ja) 2002-12-05 2009-10-21 パナソニック株式会社 無線通信システム、無線通信方法、及び無線通信装置
US8179833B2 (en) 2002-12-06 2012-05-15 Qualcomm Incorporated Hybrid TDM/OFDM/CDM reverse link transmission
US7272768B2 (en) 2002-12-09 2007-09-18 Broadcom Corporation Edge incremental redundancy memory structure and memory management
KR100507519B1 (ko) 2002-12-13 2005-08-17 한국전자통신연구원 Ｏｆｄｍａ 기반 셀룰러 시스템의 하향링크를 위한 신호구성 방법 및 장치
US7508798B2 (en) 2002-12-16 2009-03-24 Nortel Networks Limited Virtual mimo communication system
KR100552669B1 (ko) 2002-12-26 2006-02-20 한국전자통신연구원 층적 공간-시간 구조의 검파기를 갖는 다중 입출력시스템에 적용되는 적응 변복조 장치 및 그 방법
US6904550B2 (en) 2002-12-30 2005-06-07 Motorola, Inc. Velocity enhancement for OFDM systems
KR100606008B1 (ko) 2003-01-04 2006-07-26 삼성전자주식회사 부호 분할 다중 접속 통신 시스템에서 역방향 데이터재전송 요청 송수신 장치 및 방법
JP4098096B2 (ja) 2003-01-06 2008-06-11 三菱電機株式会社 スペクトル拡散受信装置
US8400979B2 (en) 2003-01-07 2013-03-19 Qualcomm Incorporated Forward link handoff for wireless communication systems with OFDM forward link and CDMA reverse link
US7280467B2 (en) 2003-01-07 2007-10-09 Qualcomm Incorporated Pilot transmission schemes for wireless multi-carrier communication systems
CN1302671C (zh) 2003-01-07 2007-02-28 华为技术有限公司 一种第三方为接收方接收多媒体短消息付费的方法
JP4139230B2 (ja) 2003-01-15 2008-08-27 松下電器産業株式会社 送信装置及び送信方法
US7346018B2 (en) 2003-01-16 2008-03-18 Qualcomm, Incorporated Margin control in a data communication system
CN100417269C (zh) 2003-01-20 2008-09-03 中兴通讯股份有限公司 智能天线波束切换方法
KR100580244B1 (ko) 2003-01-23 2006-05-16 삼성전자주식회사 무선랜상의 핸드오프 방법
US20060068848A1 (en) 2003-01-28 2006-03-30 Celletra Ltd. System and method for load distribution between base station sectors
JP4276009B2 (ja) 2003-02-06 2009-06-10 株式会社エヌ・ティ・ティ・ドコモ 移動局、基地局、無線伝送プログラム、及び無線伝送方法
JP4514463B2 (ja) 2003-02-12 2010-07-28 パナソニック株式会社 送信装置及び無線通信方法
JP3740471B2 (ja) 2003-02-13 2006-02-01 株式会社東芝 Ｏｆｄｍ受信装置、半導体集積回路及びｏｆｄｍ受信方法
EP1593246A1 (en) 2003-02-14 2005-11-09 DoCoMo Communications Laboratories Europe GmbH Two-dimensional channel estimation for multicarrier multiple input multiple outpout communication systems
US8391249B2 (en) 2003-02-18 2013-03-05 Qualcomm Incorporated Code division multiplexing commands on a code division multiplexed channel
US7155236B2 (en) 2003-02-18 2006-12-26 Qualcomm Incorporated Scheduled and autonomous transmission and acknowledgement
RU2368106C2 (ru) 2003-02-18 2009-09-20 Квэлкомм Инкорпорейтед Планируемая и автономная передача и подтверждение приема
US7660282B2 (en) 2003-02-18 2010-02-09 Qualcomm Incorporated Congestion control in a wireless data network
KR101032534B1 (ko) 2003-02-19 2011-05-04 콸콤 인코포레이티드 멀티-유저 통신 시스템들에서 향상된 코딩 방법들 및 장치
US7813322B2 (en) 2003-02-19 2010-10-12 Qualcomm Incorporated Efficient automatic repeat request methods and apparatus
EP1600016A1 (en) 2003-02-24 2005-11-30 Floyd Backes Wireless system with automatic channel and power selection for access points
US9544860B2 (en) 2003-02-24 2017-01-10 Qualcomm Incorporated Pilot signals for use in multi-sector cells
KR100539230B1 (ko) 2003-02-26 2005-12-27 삼성전자주식회사 다양한 규격의 신호를 송수신 처리하는 물리층 장치, 이를구비한 무선 랜 시스템 및 그 무선 랜 방법
MXPA05009121A (es) 2003-02-27 2005-10-20 Interdigital Tech Corp Metodo para implementar procesos de administracion de radiorecursos con asignacion de canal rapida-dinamica.
JP2004260658A (ja) 2003-02-27 2004-09-16 Matsushita Electric Ind Co Ltd 無線ｌａｎ装置
KR100547758B1 (ko) 2003-02-28 2006-01-31 삼성전자주식회사 초광대역 통신 시스템의 프리앰블 송수신 장치 및 방법
US7486735B2 (en) * 2003-02-28 2009-02-03 Nortel Networks Limited Sub-carrier allocation for OFDM
US7746816B2 (en) 2003-03-13 2010-06-29 Qualcomm Incorporated Method and system for a power control in a communication system
US6927728B2 (en) 2003-03-13 2005-08-09 Motorola, Inc. Method and apparatus for multi-antenna transmission
US20040181569A1 (en) 2003-03-13 2004-09-16 Attar Rashid Ahmed Method and system for a data transmission in a communication system
US20040179480A1 (en) 2003-03-13 2004-09-16 Attar Rashid Ahmed Method and system for estimating parameters of a link for data transmission in a communication system
US7130580B2 (en) 2003-03-20 2006-10-31 Lucent Technologies Inc. Method of compensating for correlation between multiple antennas
US7016319B2 (en) 2003-03-24 2006-03-21 Motorola, Inc. Method and apparatus for reducing co-channel interference in a communication system
SE527445C2 (sv) 2003-03-25 2006-03-07 Telia Ab Lägesanpassat skyddsintervall för OFDM-kommunikation
US20040192386A1 (en) 2003-03-26 2004-09-30 Naveen Aerrabotu Method and apparatus for multiple subscriber identities in a mobile communication device
JP4218387B2 (ja) 2003-03-26 2009-02-04 日本電気株式会社 無線通信システム、基地局及びそれらに用いる無線リンク品質情報補正方法並びにそのプログラム
JP4181906B2 (ja) 2003-03-26 2008-11-19 富士通株式会社 送信機及び受信機
JP4162522B2 (ja) 2003-03-26 2008-10-08 三洋電機株式会社 無線基地装置、送信指向性制御方法、および送信指向性制御プログラム
US7233634B1 (en) 2003-03-27 2007-06-19 Nortel Networks Limited Maximum likelihood decoding
AU2003212381A1 (en) * 2003-03-27 2004-10-18 Docomo Communications Laboratories Europe Gmbh Apparatus and method for estimating a plurality of channels
GB2400280B (en) 2003-04-02 2005-06-01 Matsushita Electric Ind Co Ltd Dynamic resource allocation in packet data transfer
US7085574B2 (en) 2003-04-15 2006-08-01 Qualcomm, Incorporated Grant channel assignment
US7406055B2 (en) 2003-04-21 2008-07-29 Mitsubishi Denki Kabushiki Kaisha Radio communication apparatus, transmitter apparatus, receiver apparatus and radio communication system
KR20120024992A (ko) 2003-04-23 2012-03-14 콸콤 인코포레이티드 무선 통신 시스템에서 수행성능을 향상시키는 방법들 및 장치
US7640373B2 (en) 2003-04-25 2009-12-29 Motorola, Inc. Method and apparatus for channel quality feedback within a communication system
KR100942645B1 (ko) 2003-04-29 2010-02-17 엘지전자 주식회사 이동통신 시스템에서의 신호전송 방법 및 장치
US7013143B2 (en) 2003-04-30 2006-03-14 Motorola, Inc. HARQ ACK/NAK coding for a communication device during soft handoff
US20040219919A1 (en) 2003-04-30 2004-11-04 Nicholas Whinnett Management of uplink scheduling modes in a wireless communication system
US6824416B2 (en) 2003-04-30 2004-11-30 Agilent Technologies, Inc. Mounting arrangement for plug-in modules
US6993342B2 (en) * 2003-05-07 2006-01-31 Motorola, Inc. Buffer occupancy used in uplink scheduling for a communication device
US6882855B2 (en) 2003-05-09 2005-04-19 Motorola, Inc. Method and apparatus for CDMA soft handoff for dispatch group members
US7254158B2 (en) 2003-05-12 2007-08-07 Qualcomm Incorporated Soft handoff with interference cancellation in a wireless frequency hopping communication system
US7177297B2 (en) 2003-05-12 2007-02-13 Qualcomm Incorporated Fast frequency hopping with a code division multiplexed pilot in an OFDMA system
US6950319B2 (en) 2003-05-13 2005-09-27 Delta Electronics, Inc. AC/DC flyback converter
US7545867B1 (en) 2003-05-14 2009-06-09 Marvell International, Ltd. Adaptive channel bandwidth selection for MIMO wireless systems
KR100526542B1 (ko) * 2003-05-15 2005-11-08 삼성전자주식회사 이동 통신 시스템에서 다중안테나를 사용하는송신다이버시티 방식을 사용하여 데이터를 송수신하는장치 및 방법
EP1623512A1 (en) * 2003-05-15 2006-02-08 Lg Electronics Inc. Method and apparatus for allocating channelization codes for wireless communications
US7181196B2 (en) 2003-05-15 2007-02-20 Lucent Technologies Inc. Performing authentication in a communications system
US20040228313A1 (en) 2003-05-16 2004-11-18 Fang-Chen Cheng Method of mapping data for uplink transmission in communication systems
JP4235181B2 (ja) 2003-05-20 2009-03-11 富士通株式会社 移動通信システムにおけるアプリケーションデータ転送方法並びに同移動通信システムに使用される移動管理ノード及び移動ノード
US7454510B2 (en) 2003-05-29 2008-11-18 Microsoft Corporation Controlled relay of media streams across network perimeters
US7366137B2 (en) 2003-05-31 2008-04-29 Qualcomm Incorporated Signal-to-noise estimation in wireless communication devices with receive diversity
US8018902B2 (en) 2003-06-06 2011-09-13 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for channel quality indicator determination
US7079870B2 (en) 2003-06-09 2006-07-18 Ipr Licensing, Inc. Compensation techniques for group delay effects in transmit beamforming radio communication
KR100547734B1 (ko) 2003-06-13 2006-01-31 삼성전자주식회사 직교 주파수 분할 다중 방식을 사용하는 이동 통신시스템에서 매체 접속 제어 계층의 동작 상태 제어 방법
WO2004114549A1 (en) 2003-06-13 2004-12-29 Nokia Corporation Enhanced data only code division multiple access (cdma) system
WO2004112292A1 (en) 2003-06-18 2004-12-23 Samsung Electronics Co., Ltd. Apparatus and method for transmitting and receiving a pilot pattern for identification of a base station in an ofdm communication system
US7236747B1 (en) 2003-06-18 2007-06-26 Samsung Electronics Co., Ltd. (SAIT) Increasing OFDM transmit power via reduction in pilot tone
EP1512258B1 (en) 2003-06-22 2008-12-03 NTT DoCoMo, Inc. Apparatus and method for estimating a channel in a multiple input transmission system
KR20050000709A (ko) 2003-06-24 2005-01-06 삼성전자주식회사 다중 접속 방식을 사용하는 통신 시스템의 데이터 송수신장치 및 방법
US7433661B2 (en) 2003-06-25 2008-10-07 Lucent Technologies Inc. Method for improved performance and reduced bandwidth channel state information feedback in communication systems
US7394865B2 (en) 2003-06-25 2008-07-01 Nokia Corporation Signal constellations for multi-carrier systems
NZ526669A (en) * 2003-06-25 2006-03-31 Ind Res Ltd Narrowband interference suppression for OFDM systems
ATE354211T1 (de) 2003-06-26 2007-03-15 Mitsubishi Electric Corp Verbesserte kugeldekodierung von in einem telekommunikationssystem gesendeten symbolen
JP3746280B2 (ja) 2003-06-27 2006-02-15 株式会社東芝 通信方法、通信システム及び通信装置
CN100473213C (zh) 2003-06-30 2009-03-25 日本电气株式会社 无线通信系统和发射模式选择方法
US7522919B2 (en) 2003-07-14 2009-04-21 Telefonaktiebolaget Lm Ericsson (Publ) Enhancements to periodic silences in wireless communication systems
KR100987286B1 (ko) * 2003-07-31 2010-10-12 삼성전자주식회사 무선 통신 시스템에서 다중접속 방법 및 그 제어 시스템
ES2345714T3 (es) 2003-08-05 2010-09-30 Telecom Italia S.P.A. Metodo para proporcionar rutas de trafico adicional con proteccion de la conexion en una red de comunicacion, y producto de programa informatico y red relacionados con lo mismo.
US7126928B2 (en) 2003-08-05 2006-10-24 Qualcomm Incorporated Grant, acknowledgement, and rate control active sets
US8140980B2 (en) * 2003-08-05 2012-03-20 Verizon Business Global Llc Method and system for providing conferencing services
US7315527B2 (en) 2003-08-05 2008-01-01 Qualcomm Incorporated Extended acknowledgement and rate control channel
US7969857B2 (en) * 2003-08-07 2011-06-28 Nortel Networks Limited OFDM system and method employing OFDM symbols with known or information-containing prefixes
US7460494B2 (en) * 2003-08-08 2008-12-02 Intel Corporation Adaptive signaling in multiple antenna systems
JP4427027B2 (ja) 2003-08-12 2010-03-03 パナソニック株式会社 送信装置および送信方法
KR100979589B1 (ko) 2003-08-13 2010-09-01 콸콤 인코포레이티드 무선 통신 시스템들에서 전력 제어 방법들 및 장치
EP1507421B1 (en) 2003-08-14 2006-06-28 Matsushita Electric Industrial Co., Ltd. Base station synchronization during soft handover
CN1284795C (zh) 2003-08-15 2006-11-15 上海师范大学 磁性纳米粒子核酸分离器、及其制法和应用
RU2235429C1 (ru) 2003-08-15 2004-08-27 Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" Способ частотно-временной синхронизации системы связи и устройство для его осуществления
US7257167B2 (en) * 2003-08-19 2007-08-14 The University Of Hong Kong System and method for multi-access MIMO channels with feedback capacity constraint
KR101109936B1 (ko) 2003-08-20 2012-02-27 파나소닉 주식회사 무선 통신 장치 및 서브 캐리어의 할당 방법
US6925145B2 (en) * 2003-08-22 2005-08-02 General Electric Company High speed digital radiographic inspection of piping
US20050063298A1 (en) 2003-09-02 2005-03-24 Qualcomm Incorporated Synchronization in a broadcast OFDM system using time division multiplexed pilots
US7221680B2 (en) 2003-09-02 2007-05-22 Qualcomm Incorporated Multiplexing and transmission of multiple data streams in a wireless multi-carrier communication system
JP4194091B2 (ja) 2003-09-02 2008-12-10 ソニー・エリクソン・モバイルコミュニケーションズ株式会社 無線通信システムおよび無線通信装置
US20050047517A1 (en) 2003-09-03 2005-03-03 Georgios Giannakis B. Adaptive modulation for multi-antenna transmissions with partial channel knowledge
US7400856B2 (en) 2003-09-03 2008-07-15 Motorola, Inc. Method and apparatus for relay facilitated communications
US7724827B2 (en) 2003-09-07 2010-05-25 Microsoft Corporation Multi-layer run level encoding and decoding
US8908496B2 (en) 2003-09-09 2014-12-09 Qualcomm Incorporated Incremental redundancy transmission in a MIMO communication system
US7356073B2 (en) 2003-09-10 2008-04-08 Nokia Corporation Method and apparatus providing an advanced MIMO receiver that includes a signal-plus-residual-interference (SPRI) detector
US6917821B2 (en) 2003-09-23 2005-07-12 Qualcomm, Incorporated Successive interference cancellation receiver processing with selection diversity
US20050068921A1 (en) 2003-09-29 2005-03-31 Jung-Tao Liu Multiplexing of physical channels on the uplink
KR20060097720A (ko) 2003-09-30 2006-09-14 텔레폰악티에볼라겟엘엠에릭슨(펍) 고속 무선 패킷 데이터 네트워크 내의 혼잡 제어용 방법 및장치
KR100950668B1 (ko) 2003-09-30 2010-04-02 삼성전자주식회사 직교 주파수 분할 다중 접속 방식을 사용하는 통신 시스템에서 업링크 파일럿 신호 송수신 장치 및 방법
JP2005110130A (ja) 2003-10-01 2005-04-21 Samsung Electronics Co Ltd 共通チャネル伝送システム、共通チャネル伝送方法及び通信プログラム
EP1521414B1 (en) 2003-10-03 2008-10-29 Kabushiki Kaisha Toshiba Method and apparatus for sphere decoding
US7230942B2 (en) 2003-10-03 2007-06-12 Qualcomm, Incorporated Method of downlink resource allocation in a sectorized environment
US7039370B2 (en) 2003-10-16 2006-05-02 Flarion Technologies, Inc. Methods and apparatus of providing transmit and/or receive diversity with multiple antennas in wireless communication systems
US7242722B2 (en) 2003-10-17 2007-07-10 Motorola, Inc. Method and apparatus for transmission and reception within an OFDM communication system
US7120395B2 (en) 2003-10-20 2006-10-10 Nortel Networks Limited MIMO communications
ATE368977T1 (de) 2003-10-21 2007-08-15 Alcatel Lucent Verfahren zur zuordnung der unterträger und zur auswahl des modulationsschemas in einem drahtlosen mehrträgerübertragungssystem
US7508748B2 (en) 2003-10-24 2009-03-24 Qualcomm Incorporated Rate selection for a multi-carrier MIMO system
KR20050040988A (ko) 2003-10-29 2005-05-04 삼성전자주식회사 주파수도약 직교 주파수 분할 다중화 기반 셀룰러시스템을 위한 통신방법
KR100957415B1 (ko) 2003-10-31 2010-05-11 삼성전자주식회사 직교 주파수 분할 다중 방식을 사용하는 통신 시스템에서 기지국 구분을 위한 파일럿 신호 송수신 장치 및 방법
KR101023330B1 (ko) 2003-11-05 2011-03-18 한국과학기술원 무선 통신 시스템에서 서비스 품질을 보장하기 위한 복합자동 재전송 요구 방법
US7664533B2 (en) 2003-11-10 2010-02-16 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for a multi-beam antenna system
KR100981554B1 (ko) * 2003-11-13 2010-09-10 한국과학기술원 다중 송수신 안테나들을 구비하는 이동통신시스템에서,송신 안테나들을 그룹핑하여 신호를 전송하는 방법
US7356000B2 (en) 2003-11-21 2008-04-08 Motorola, Inc. Method and apparatus for reducing call setup delay
EP1533950A1 (en) 2003-11-21 2005-05-25 Sony International (Europe) GmbH Method for connecting a mobile terminal to a wireless communication system, wireless communication system and mobile terminal for a wireless communication system
JP3908723B2 (ja) 2003-11-28 2007-04-25 Ｔｄｋ株式会社 誘電体磁器組成物の製造方法
US9473269B2 (en) 2003-12-01 2016-10-18 Qualcomm Incorporated Method and apparatus for providing an efficient control channel structure in a wireless communication system
JP2005167502A (ja) 2003-12-01 2005-06-23 Ntt Docomo Inc 無線通信システム、送信無線局の制御装置及び受信無線局の制御装置、並びにサブキャリア選択方法
KR20050053907A (ko) 2003-12-03 2005-06-10 삼성전자주식회사 직교 주파수 분할 다중 접속 방식을 사용하는 이동 통신시스템에서 서브 캐리어 할당 방법
CN1890935A (zh) 2003-12-03 2007-01-03 澳大利亚电信合作研究中心 Ofdm系统的信道评估
TWI232040B (en) 2003-12-03 2005-05-01 Chung Shan Inst Of Science CDMA transmitting and receiving apparatus with multiply applied interface functions and a method thereof
JP4188372B2 (ja) 2003-12-05 2008-11-26 日本電信電話株式会社 無線通信装置、無線通信方法、及び無線通信システム
US7145940B2 (en) 2003-12-05 2006-12-05 Qualcomm Incorporated Pilot transmission schemes for a multi-antenna system
WO2005055465A1 (en) 2003-12-05 2005-06-16 Samsung Electronics Co., Ltd. Apparatus and method for transmitting data by selected eigenvector in closed loop mimo mobile communication system
EP1542488A1 (en) 2003-12-12 2005-06-15 Telefonaktiebolaget LM Ericsson (publ) Method and apparatus for allocating a pilot signal adapted to the channel characteristics
KR100856227B1 (ko) 2003-12-15 2008-09-03 삼성전자주식회사 이동통신시스템에서의 송/수신장치 및 방법
KR100560386B1 (ko) 2003-12-17 2006-03-13 한국전자통신연구원 무선 통신 시스템의 상향 링크에서 코히어런트 검출을위한 직교주파수 분할 다중 접속 방식의 송수신 장치 및그 방법
EP1545082A3 (en) 2003-12-17 2005-08-03 Kabushiki Kaisha Toshiba Signal decoding methods and apparatus
KR20050063826A (ko) 2003-12-19 2005-06-28 엘지전자 주식회사 무선통신 시스템의 무선자원 할당방법
KR100507541B1 (ko) 2003-12-19 2005-08-09 삼성전자주식회사 직교주파수분할다중접속 시스템에서의 데이터 및 파일롯할당 방법 과 그를 이용한 송신 방법 및 그 장치, 수신방법과 그 장치
JP4301931B2 (ja) 2003-12-22 2009-07-22 株式会社三共 遊技機
US7181170B2 (en) 2003-12-22 2007-02-20 Motorola Inc. Apparatus and method for adaptive broadcast transmission
CN1886915B (zh) 2003-12-22 2010-06-09 艾利森电话股份有限公司 用于确定发射权的方法
KR100943572B1 (ko) 2003-12-23 2010-02-24 삼성전자주식회사 직교 주파수 분할 다중 접속 시스템에서 주파수재사용율을 고려한 적응적 부채널 할당 장치 및 방법
US7352819B2 (en) 2003-12-24 2008-04-01 Intel Corporation Multiantenna communications apparatus, methods, and system
JP2005197772A (ja) 2003-12-26 2005-07-21 Toshiba Corp アダプティブアレイアンテナ装置
JP4425925B2 (ja) * 2003-12-27 2010-03-03 韓國電子通信研究院 固有ビーム形成技術を使用するｍｉｍｏ−ｏｆｄｍシステム
US7489621B2 (en) 2003-12-30 2009-02-10 Alexander A Maltsev Adaptive puncturing technique for multicarrier systems
WO2005069538A1 (en) 2004-01-07 2005-07-28 Deltel, Inc./Pbnext Method and apparatus for telecommunication system
CN1642051A (zh) 2004-01-08 2005-07-20 电子科技大学 一种获取最优导引符号功率的方法
WO2005065062A2 (en) 2004-01-09 2005-07-21 Lg Electronics Inc. Packet transmission method
US7289585B2 (en) 2004-01-12 2007-10-30 Intel Corporation Multicarrier receivers and methods for separating transmitted signals in a multiple antenna system
JP4167183B2 (ja) 2004-01-14 2008-10-15 株式会社国際電気通信基礎技術研究所 アレーアンテナの制御装置
JP2007518346A (ja) 2004-01-20 2007-07-05 エルジー エレクトロニクス インコーポレイティド Ｍｉｍｏシステムにおける信号送受信方法
AU2005207338B2 (en) 2004-01-20 2010-09-30 Qualcomm Incorporated Synchronized broadcast/multicast communication
US20050159162A1 (en) 2004-01-20 2005-07-21 Samsung Electronics Co., Ltd. Method for transmitting data in mobile communication network
US8611283B2 (en) 2004-01-28 2013-12-17 Qualcomm Incorporated Method and apparatus of using a single channel to provide acknowledgement and assignment messages
US8144735B2 (en) 2004-02-10 2012-03-27 Qualcomm Incorporated Transmission of signaling information for broadcast and multicast services
GB2412541B (en) 2004-02-11 2006-08-16 Samsung Electronics Co Ltd Method of operating TDD/virtual FDD hierarchical cellular telecommunication system
CN1943152B (zh) 2004-02-13 2011-07-27 桥扬科技有限公司 用于具有自适应发射和反馈的多载波通信系统的方法和设备
KR100827105B1 (ko) 2004-02-13 2008-05-02 삼성전자주식회사 광대역 무선 통신 시스템에서 고속 레인징을 통한 빠른핸드오버 수행 방법 및 장치
US7564906B2 (en) 2004-02-17 2009-07-21 Nokia Siemens Networks Oy OFDM transceiver structure with time-domain scrambling
EP1763932A4 (en) 2004-02-17 2010-01-06 Huawei Tech Co Ltd MULTIPLEX PROCESS IN A COMMUNICATION SYSTEM
US8169889B2 (en) * 2004-02-18 2012-05-01 Qualcomm Incorporated Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system
JP2005236678A (ja) 2004-02-19 2005-09-02 Toyota Motor Corp 移動体用受信装置
EP1721475A1 (en) 2004-02-27 2006-11-15 Nokia Corporation Constrained optimization based mimo lmmse-sic receiver for cdma downlink
US7421041B2 (en) 2004-03-01 2008-09-02 Qualcomm, Incorporated Iterative channel and interference estimation and decoding
US20050195886A1 (en) 2004-03-02 2005-09-08 Nokia Corporation CPICH processing for SINR estimation in W-CDMA system
KR101084113B1 (ko) 2004-03-05 2011-11-17 엘지전자 주식회사 이동통신의 핸드오버에 적용되는 서비스 정보 전달 방법
US7290195B2 (en) 2004-03-05 2007-10-30 Microsoft Corporation Adaptive acknowledgment delay
EP3562058B1 (en) 2004-03-15 2022-04-27 Apple Inc. Pilot design for ofdm systems with four transmit antennas
US20050201296A1 (en) 2004-03-15 2005-09-15 Telefonaktiebolaget Lm Ericsson (Pu Reduced channel quality feedback
US7706350B2 (en) 2004-03-19 2010-04-27 Qualcomm Incorporated Methods and apparatus for flexible spectrum allocation in communication systems
US20050207367A1 (en) 2004-03-22 2005-09-22 Onggosanusi Eko N Method for channel quality indicator computation and feedback in a multi-carrier communications system
US7907898B2 (en) 2004-03-26 2011-03-15 Qualcomm Incorporated Asynchronous inter-piconet routing
JP2005284751A (ja) 2004-03-30 2005-10-13 Fujitsu Ltd 論理検証装置、論理検証方法および論理検証プログラム
JP4288368B2 (ja) 2004-04-09 2009-07-01 Ｏｋｉセミコンダクタ株式会社 受信制御方法および無線ｌａｎ装置
US7684507B2 (en) 2004-04-13 2010-03-23 Intel Corporation Method and apparatus to select coding mode
US7047006B2 (en) 2004-04-28 2006-05-16 Motorola, Inc. Method and apparatus for transmission and reception of narrowband signals within a wideband communication system
KR100594084B1 (ko) 2004-04-30 2006-06-30 삼성전자주식회사 직교 주파수 분할 다중 수신기의 채널 추정 방법 및 채널추정기
GB0409704D0 (en) 2004-04-30 2004-06-02 Nokia Corp A method for verifying a first identity and a second identity of an entity
CA2506267A1 (en) 2004-05-04 2005-11-04 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry Through The Communications Research Centre Multi-subband frequency hopping communication system and method
US7411898B2 (en) 2004-05-10 2008-08-12 Infineon Technologies Ag Preamble generator for a multiband OFDM transceiver
JP4447372B2 (ja) 2004-05-13 2010-04-07 株式会社エヌ・ティ・ティ・ドコモ 無線通信システム、無線通信装置、無線受信装置、無線通信方法及びチャネル推定方法
KR20050109789A (ko) 2004-05-17 2005-11-22 삼성전자주식회사 공간분할다중화/다중입력다중출력 시스템에서의 빔포밍 방법
US20050259005A1 (en) 2004-05-20 2005-11-24 Interdigital Technology Corporation Beam forming matrix-fed circular array system
US7157351B2 (en) 2004-05-20 2007-01-02 Taiwan Semiconductor Manufacturing Co., Ltd. Ozone vapor clean method
US8000377B2 (en) 2004-05-24 2011-08-16 General Dynamics C4 Systems, Inc. System and method for variable rate multiple access short message communications
JP4398791B2 (ja) 2004-05-25 2010-01-13 株式会社エヌ・ティ・ティ・ドコモ 送信機および送信制御方法
US7551564B2 (en) 2004-05-28 2009-06-23 Intel Corporation Flow control method and apparatus for single packet arrival on a bidirectional ring interconnect
KR100754794B1 (ko) 2004-05-29 2007-09-03 삼성전자주식회사 이동통신시스템에서 셀 식별 코드 송수신 장치 및 방법
US7437164B2 (en) 2004-06-08 2008-10-14 Qualcomm Incorporated Soft handoff for reverse link in a wireless communication system with frequency reuse
JP2005352205A (ja) 2004-06-10 2005-12-22 Fujinon Corp 照明装置
US8619907B2 (en) 2004-06-10 2013-12-31 Agere Systems, LLC Method and apparatus for preamble training in a multiple antenna communication system
US7769107B2 (en) 2004-06-10 2010-08-03 Intel Corporation Semi-blind analog beamforming for multiple-antenna systems
US7773950B2 (en) 2004-06-16 2010-08-10 Telefonaktiebolaget Lm Ericsson (Publ) Benign interference suppression for received signal quality estimation
US7724777B2 (en) 2004-06-18 2010-05-25 Qualcomm Incorporated Quasi-orthogonal multiplexing for a multi-carrier communication system
US8027372B2 (en) 2004-06-18 2011-09-27 Qualcomm Incorporated Signal acquisition in a wireless communication system
US7599327B2 (en) 2004-06-24 2009-10-06 Motorola, Inc. Method and apparatus for accessing a wireless communication system
KR101053610B1 (ko) 2004-06-25 2011-08-03 엘지전자 주식회사 Ｏｆｄｍ／ｏｆｄｍａ 시스템의 무선자원 할당 방법
US7299048B2 (en) 2004-06-25 2007-11-20 Samsung Electronics Co., Ltd. System and method for performing soft handover in broadband wireless access communication system
WO2006004968A2 (en) * 2004-06-30 2006-01-12 Neocific, Inc. Methods and apparatus for power control in multi-carrier wireless systems
US8000268B2 (en) 2004-06-30 2011-08-16 Motorola Mobility, Inc. Frequency-hopped IFDMA communication system
JP4429358B2 (ja) 2004-07-02 2010-03-10 ヴァイブレイション・リサーチ・コーポレーション ランダム振動のスペクトルと尖度を同時に制御するためのシステム及び方法
WO2006002550A1 (en) * 2004-07-07 2006-01-12 Nortel Networks Limited System and method for mapping symbols for mimo transmission
JP4181093B2 (ja) * 2004-07-16 2008-11-12 株式会社東芝 無線通信システム
US10355825B2 (en) * 2004-07-21 2019-07-16 Qualcomm Incorporated Shared signaling channel for a communication system
US7676007B1 (en) 2004-07-21 2010-03-09 Jihoon Choi System and method for interpolation based transmit beamforming for MIMO-OFDM with partial feedback
US8477710B2 (en) * 2004-07-21 2013-07-02 Qualcomm Incorporated Method of providing a gap indication during a sticky assignment
US9137822B2 (en) 2004-07-21 2015-09-15 Qualcomm Incorporated Efficient signaling over access channel
US7567621B2 (en) 2004-07-21 2009-07-28 Qualcomm Incorporated Capacity based rank prediction for MIMO design
US9148256B2 (en) 2004-07-21 2015-09-29 Qualcomm Incorporated Performance based rank prediction for MIMO design
US7257406B2 (en) 2004-07-23 2007-08-14 Qualcomm, Incorporated Restrictive reuse set management
EP1774678A4 (en) 2004-08-03 2011-01-05 Agency Science Tech & Res METHOD FOR TRANSMITTING A DIGITAL DATA STREAM, TRANSMITTER, METHOD FOR RECEIVING A DIGITAL DATA STREAM AND RECEIVER
JP2006050326A (ja) * 2004-08-05 2006-02-16 Toshiba Corp 情報処理装置および同装置のシーンチェンジ検出方法
US7428426B2 (en) 2004-08-06 2008-09-23 Qualcomm, Inc. Method and apparatus for controlling transmit power in a wireless communications device
US7499393B2 (en) * 2004-08-11 2009-03-03 Interdigital Technology Corporation Per stream rate control (PSRC) for improving system efficiency in OFDM-MIMO communication systems
EP1776780B1 (en) * 2004-08-12 2015-10-21 LG Electronics Inc. Reception in dedicated service of wireless communication system
US20060218459A1 (en) 2004-08-13 2006-09-28 David Hedberg Coding systems and methods
US20060039332A1 (en) * 2004-08-17 2006-02-23 Kotzin Michael D Mechanism for hand off using subscriber detection of synchronized access point beacon transmissions
EP1628426B1 (en) * 2004-08-17 2015-07-22 Samsung Electronics Co., Ltd. Apparatus and method for space-time-frequency block coding for increasing performance
CN1296682C (zh) 2004-08-17 2007-01-24 广东省基础工程公司 一种隧道过江施工中用于监测河床沉降的装置及其方法
US7899497B2 (en) 2004-08-18 2011-03-01 Ruckus Wireless, Inc. System and method for transmission parameter control for an antenna apparatus with selectable elements
US7336727B2 (en) * 2004-08-19 2008-02-26 Nokia Corporation Generalized m-rank beamformers for MIMO systems using successive quantization
US20060039344A1 (en) * 2004-08-20 2006-02-23 Lucent Technologies, Inc. Multiplexing scheme for unicast and broadcast/multicast traffic
US7852746B2 (en) 2004-08-25 2010-12-14 Qualcomm Incorporated Transmission of signaling in an OFDM-based system
KR100856249B1 (ko) 2004-08-26 2008-09-03 삼성전자주식회사 무선 통신 시스템에서 초기 동작 모드 검출 방법
US7978778B2 (en) 2004-09-03 2011-07-12 Qualcomm, Incorporated Receiver structures for spatial spreading with space-time or space-frequency transmit diversity
US7894548B2 (en) 2004-09-03 2011-02-22 Qualcomm Incorporated Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system
US7362822B2 (en) * 2004-09-08 2008-04-22 Intel Corporation Recursive reduction of channel state feedback
US7613423B2 (en) 2004-09-10 2009-11-03 Samsung Electronics Co., Ltd. Method of creating active multipaths for mimo wireless systems
GB0420164D0 (en) 2004-09-10 2004-10-13 Nokia Corp A scheduler
KR100715910B1 (ko) 2004-09-20 2007-05-08 삼성전자주식회사 다중 접속 방식을 사용하는 이동 통신 시스템의 셀 탐색장치 및 방법
WO2006034577A1 (en) 2004-09-30 2006-04-06 Nortel Networks Limited Channel sounding in ofdma system
US8325863B2 (en) 2004-10-12 2012-12-04 Qualcomm Incorporated Data detection and decoding with considerations for channel estimation errors due to guard subbands
US7969858B2 (en) 2004-10-14 2011-06-28 Qualcomm Incorporated Wireless terminal methods and apparatus for use in wireless communications systems supporting different size frequency bands
US7636328B2 (en) 2004-10-20 2009-12-22 Qualcomm Incorporated Efficient transmission of signaling using channel constraints
US7616955B2 (en) 2004-11-12 2009-11-10 Broadcom Corporation Method and system for bits and coding assignment utilizing Eigen beamforming with fixed rates for closed loop WLAN
US20060089104A1 (en) 2004-10-27 2006-04-27 Nokia Corporation Method for improving an HS-DSCH transport format allocation
GB2419788B (en) 2004-11-01 2007-10-31 Toshiba Res Europ Ltd Interleaver and de-interleaver systems
US7139328B2 (en) 2004-11-04 2006-11-21 Motorola, Inc. Method and apparatus for closed loop data transmission
US7627051B2 (en) 2004-11-08 2009-12-01 Samsung Electronics Co., Ltd. Method of maximizing MIMO system performance by joint optimization of diversity and spatial multiplexing
EP1829262B1 (en) 2004-11-16 2018-03-14 QUALCOMM Incorporated Closed-loop rate control for a mimo communication system
US20060104333A1 (en) 2004-11-18 2006-05-18 Motorola, Inc. Acknowledgment for a time division channel
US20060111054A1 (en) 2004-11-22 2006-05-25 Interdigital Technology Corporation Method and system for selecting transmit antennas to reduce antenna correlation
US7512096B2 (en) 2004-11-24 2009-03-31 Alcatel-Lucent Usa Inc. Communicating data between an access point and multiple wireless devices over a link
US7593473B2 (en) 2004-12-01 2009-09-22 Bae Systems Information And Electronic Systems Integration Inc. Tree structured multicarrier multiple access systems
US7822128B2 (en) 2004-12-03 2010-10-26 Intel Corporation Multiple antenna multicarrier transmitter and method for adaptive beamforming with transmit-power normalization
WO2006062356A1 (en) 2004-12-08 2006-06-15 Electronics And Telecommunications Research Institute Transmitter, receiver and method for controlling multiple input multiple output system
US7940710B2 (en) 2004-12-22 2011-05-10 Qualcomm Incorporated Methods and apparatus for efficient paging in a wireless communication system
US8238923B2 (en) 2004-12-22 2012-08-07 Qualcomm Incorporated Method of using shared resources in a communication system
US8179876B2 (en) 2004-12-22 2012-05-15 Qualcomm Incorporated Multiple modulation technique for use in a communication system
MX2007007760A (es) 2004-12-22 2007-08-17 Qualcomm Inc Metodos y aparato para salto flexible en una red de comunicacion de acceso multiple.
US7543197B2 (en) 2004-12-22 2009-06-02 Qualcomm Incorporated Pruned bit-reversal interleaver
US20060140289A1 (en) 2004-12-27 2006-06-29 Mandyam Giridhar D Method and apparatus for providing an efficient pilot scheme for channel estimation
CN1642335A (zh) 2005-01-06 2005-07-20 东南大学 移动通信系统混合无线资源管理方法
US7778826B2 (en) * 2005-01-13 2010-08-17 Intel Corporation Beamforming codebook generation system and associated methods
EP3544217B1 (en) 2005-01-18 2021-04-07 SHARP Kabushiki Kaisha Wireless communication apparatus and wireless communication method
JP2006211537A (ja) 2005-01-31 2006-08-10 Nec Corp コード状態変更装置、コード状態変更方法、およびコード状態変更プログラム
KR100966044B1 (ko) 2005-02-24 2010-06-28 삼성전자주식회사 다중 셀 통신 시스템에서 주파수 자원 할당 시스템 및 방법
KR20060096365A (ko) * 2005-03-04 2006-09-11 삼성전자주식회사 다중 사용자 다중입력 다중출력（ｍｕ－ｍｉｍｏ）통신시스템의 사용자 스케줄링 방법
US8135088B2 (en) 2005-03-07 2012-03-13 Q1UALCOMM Incorporated Pilot transmission and channel estimation for a communication system utilizing frequency division multiplexing
US8095141B2 (en) * 2005-03-09 2012-01-10 Qualcomm Incorporated Use of supplemental assignments
US7720162B2 (en) 2005-03-10 2010-05-18 Qualcomm Incorporated Partial FFT processing and demodulation for a system with multiple subcarriers
US20060203794A1 (en) 2005-03-10 2006-09-14 Qualcomm Incorporated Systems and methods for beamforming in multi-input multi-output communication systems
US9246560B2 (en) 2005-03-10 2016-01-26 Qualcomm Incorporated Systems and methods for beamforming and rate control in a multi-input multi-output communication systems
US7512412B2 (en) 2005-03-15 2009-03-31 Qualcomm, Incorporated Power control and overlapping control for a quasi-orthogonal communication system
US8446892B2 (en) 2005-03-16 2013-05-21 Qualcomm Incorporated Channel structures for a quasi-orthogonal multiple-access communication system
US9520972B2 (en) 2005-03-17 2016-12-13 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9461859B2 (en) 2005-03-17 2016-10-04 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US20090213950A1 (en) 2005-03-17 2009-08-27 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US9143305B2 (en) 2005-03-17 2015-09-22 Qualcomm Incorporated Pilot signal transmission for an orthogonal frequency division wireless communication system
US8031583B2 (en) 2005-03-30 2011-10-04 Motorola Mobility, Inc. Method and apparatus for reducing round trip latency and overhead within a communication system
US9184870B2 (en) 2005-04-01 2015-11-10 Qualcomm Incorporated Systems and methods for control channel signaling
US7797018B2 (en) 2005-04-01 2010-09-14 Interdigital Technology Corporation Method and apparatus for selecting a multi-band access point to associate with a multi-band mobile station
US7711033B2 (en) 2005-04-14 2010-05-04 Telefonaktiebolaget Lm Ericsson (Publ) SIR prediction method and apparatus
US9036538B2 (en) 2005-04-19 2015-05-19 Qualcomm Incorporated Frequency hopping design for single carrier FDMA systems
US9408220B2 (en) 2005-04-19 2016-08-02 Qualcomm Incorporated Channel quality reporting for adaptive sectorization
US7768979B2 (en) 2005-05-18 2010-08-03 Qualcomm Incorporated Separating pilot signatures in a frequency hopping OFDM system by selecting pilot symbols at least hop away from an edge of a hop region
US7916681B2 (en) 2005-05-20 2011-03-29 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for communication channel error rate estimation
US8077692B2 (en) 2005-05-20 2011-12-13 Qualcomm Incorporated Enhanced frequency division multiple access for wireless communication
EP1889436A4 (en) 2005-05-26 2012-01-25 Nokia Corp METHOD AND DEVICE FOR INDICATING CHANNEL STATUS INFORMATION FOR MULTIPLE CARRIER
JP4599228B2 (ja) 2005-05-30 2010-12-15 株式会社日立製作所 無線送受信機
US8879511B2 (en) 2005-10-27 2014-11-04 Qualcomm Incorporated Assignment acknowledgement for a wireless communication system
US8842693B2 (en) 2005-05-31 2014-09-23 Qualcomm Incorporated Rank step-down for MIMO SCW design employing HARQ
US8565194B2 (en) 2005-10-27 2013-10-22 Qualcomm Incorporated Puncturing signaling channel for a wireless communication system
US8462859B2 (en) 2005-06-01 2013-06-11 Qualcomm Incorporated Sphere decoding apparatus
US8126066B2 (en) 2005-06-09 2012-02-28 Telefonaktiebolaget Lm Ericsson (Publ) Time and frequency channel estimation
US7403470B2 (en) 2005-06-13 2008-07-22 Qualcomm Incorporated Communications system, methods and apparatus
JP4869724B2 (ja) 2005-06-14 2012-02-08 株式会社エヌ・ティ・ティ・ドコモ 送信装置、送信方法、受信装置及び受信方法
EP1734773A1 (en) 2005-06-14 2006-12-20 Alcatel A method for uplink interference coordination in single frequency networks, a base station a mobile terminal and a mobile network therefor
US20070071147A1 (en) 2005-06-16 2007-03-29 Hemanth Sampath Pseudo eigen-beamforming with dynamic beam selection
US8098667B2 (en) 2005-06-16 2012-01-17 Qualcomm Incorporated Methods and apparatus for efficient providing of scheduling information
US8254924B2 (en) 2005-06-16 2012-08-28 Qualcomm Incorporated Method and apparatus for adaptive registration and paging area determination
US8750908B2 (en) 2005-06-16 2014-06-10 Qualcomm Incorporated Quick paging channel with reduced probability of missed page
US8503371B2 (en) 2005-06-16 2013-08-06 Qualcomm Incorporated Link assignment messages in lieu of assignment acknowledgement messages
US9179319B2 (en) 2005-06-16 2015-11-03 Qualcomm Incorporated Adaptive sectorization in cellular systems
US8599945B2 (en) 2005-06-16 2013-12-03 Qualcomm Incorporated Robust rank prediction for a MIMO system
DE102005028179A1 (de) 2005-06-17 2006-12-28 Siemens Ag Verfahren zum Verbindungsaufbau durch mobile Endgeräte in Kommunikationsnetzen mit variablen Bandbreiten
EP1897245A4 (en) 2005-06-20 2013-01-16 Texas Instruments Inc LOW UPLINK POWER SUPPLY CONTROL
KR100606099B1 (ko) 2005-06-22 2006-07-31 삼성전자주식회사 주파수 분할 다중 접속 방식시스템에서의 긍정 및 부정응답 채널을 설정하는 방법 및 장치
WO2007004788A1 (en) 2005-07-04 2007-01-11 Samsung Electronics Co., Ltd. Position measuring system and method using wireless broadband (wibro) signal
US20070025345A1 (en) * 2005-07-27 2007-02-01 Bachl Rainer W Method of increasing the capacity of enhanced data channel on uplink in a wireless communications systems
US7403745B2 (en) 2005-08-02 2008-07-22 Lucent Technologies Inc. Channel quality predictor and method of estimating a channel condition in a wireless communications network
US20070183386A1 (en) 2005-08-03 2007-08-09 Texas Instruments Incorporated Reference Signal Sequences and Multi-User Reference Signal Sequence Allocation
US8885628B2 (en) * 2005-08-08 2014-11-11 Qualcomm Incorporated Code division multiplexing in a single-carrier frequency division multiple access system
US7508842B2 (en) * 2005-08-18 2009-03-24 Motorola, Inc. Method and apparatus for pilot signal transmission
EP2518909B1 (en) 2005-08-18 2013-12-11 Beceem Communications Inc. Antenna virtualization in communication systems
US20090129501A1 (en) 2005-08-19 2009-05-21 Mehta Neelesh B Optimal signaling and selection verification for transmit antenna selection with erroneous feedback
US20070041457A1 (en) 2005-08-22 2007-02-22 Tamer Kadous Method and apparatus for providing antenna diversity in a wireless communication system
US8331463B2 (en) 2005-08-22 2012-12-11 Qualcomm Incorporated Channel estimation in communications
US9209956B2 (en) 2005-08-22 2015-12-08 Qualcomm Incorporated Segment sensitive scheduling
US8644292B2 (en) 2005-08-24 2014-02-04 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
AU2006282879B2 (en) 2005-08-24 2010-09-30 Qualcomm Incorporated Varied transmission time intervals for wireless communication system
US20070047495A1 (en) 2005-08-29 2007-03-01 Qualcomm Incorporated Reverse link soft handoff in a wireless multiple-access communication system
US9136974B2 (en) 2005-08-30 2015-09-15 Qualcomm Incorporated Precoding and SDMA support
DE102005041273B4 (de) 2005-08-31 2014-05-08 Intel Mobile Communications GmbH Verfahren zum rechnergestützten Bilden von Systeminformations-Medium-Zugriffs-Steuerungs-Protokollnachrichten, Medium-Zugriffs-Steuerungs-Einheit und Computerprogrammelement
RU2417520C2 (ru) 2005-09-21 2011-04-27 ЭлДжи ЭЛЕКТРОНИКС ИНК. Способ представления канала блокирования управления скоростью передачи комбинированных данных в системе беспроводной связи
EP3136671A1 (en) * 2005-10-21 2017-03-01 Apple Inc. Multiplexing schemes for ofdma
US8477684B2 (en) 2005-10-27 2013-07-02 Qualcomm Incorporated Acknowledgement of control messages in a wireless communication system
US7835460B2 (en) 2005-10-27 2010-11-16 Qualcomm Incorporated Apparatus and methods for reducing channel estimation noise in a wireless transceiver
US20070165738A1 (en) 2005-10-27 2007-07-19 Barriac Gwendolyn D Method and apparatus for pre-coding for a mimo system
US9225416B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Varied signaling channels for a reverse link in a wireless communication system
US9172453B2 (en) 2005-10-27 2015-10-27 Qualcomm Incorporated Method and apparatus for pre-coding frequency division duplexing system
US9225488B2 (en) 2005-10-27 2015-12-29 Qualcomm Incorporated Shared signaling channel
US8045512B2 (en) 2005-10-27 2011-10-25 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US8134977B2 (en) 2005-10-27 2012-03-13 Qualcomm Incorporated Tune-away protocols for wireless systems
US8582509B2 (en) 2005-10-27 2013-11-12 Qualcomm Incorporated Scalable frequency band operation in wireless communication systems
US9210651B2 (en) 2005-10-27 2015-12-08 Qualcomm Incorporated Method and apparatus for bootstraping information in a communication system
US9088384B2 (en) 2005-10-27 2015-07-21 Qualcomm Incorporated Pilot symbol transmission in wireless communication systems
US9144060B2 (en) 2005-10-27 2015-09-22 Qualcomm Incorporated Resource allocation for shared signaling channels
US8693405B2 (en) 2005-10-27 2014-04-08 Qualcomm Incorporated SDMA resource management
US8649362B2 (en) 2005-11-02 2014-02-11 Texas Instruments Incorporated Methods for determining the location of control channels in the uplink of communication systems
US8582548B2 (en) 2005-11-18 2013-11-12 Qualcomm Incorporated Frequency division multiple access schemes for wireless communication
US8891457B2 (en) 2005-12-08 2014-11-18 Apple Inc. Resource assignment systems and methods
US9148795B2 (en) 2005-12-22 2015-09-29 Qualcomm Incorporated Methods and apparatus for flexible reporting of control information
US8437251B2 (en) 2005-12-22 2013-05-07 Qualcomm Incorporated Methods and apparatus for communicating transmission backlog information
US9451491B2 (en) 2005-12-22 2016-09-20 Qualcomm Incorporated Methods and apparatus relating to generating and transmitting initial and additional control information report sets in a wireless system
KR100793315B1 (ko) 2005-12-31 2008-01-11 포스데이타 주식회사 다운링크 프리앰블을 이용한 반송파 신호 대 잡음비 측정장치 및 방법
US8831607B2 (en) 2006-01-05 2014-09-09 Qualcomm Incorporated Reverse link other sector communication
US7486408B2 (en) * 2006-03-21 2009-02-03 Asml Netherlands B.V. Lithographic apparatus and device manufacturing method with reduced scribe lane usage for substrate measurement
US20070242653A1 (en) 2006-04-13 2007-10-18 Futurewei Technologies, Inc. Method and apparatus for sharing radio resources in an ofdma-based communication system
EP1855424B1 (en) 2006-05-12 2013-07-10 Panasonic Corporation Reservation of radio resources for users in a mobile communications system
US8259695B2 (en) 2007-04-30 2012-09-04 Alcatel Lucent Method and apparatus for packet wireless telecommunications
US8254487B2 (en) * 2007-08-09 2012-08-28 Samsung Electronics Co., Ltd. Method and apparatus of codebook-based single-user closed-loop transmit beamforming (SU-CLTB) for OFDM wireless systems
US20090180459A1 (en) 2008-01-16 2009-07-16 Orlik Philip V OFDMA Frame Structures for Uplinks in MIMO Networks
US8737912B2 (en) 2008-08-12 2014-05-27 Blackberry Limited Enabling downlink transparent relay in a wireless communications network
US8228862B2 (en) 2008-12-03 2012-07-24 Samsung Electronics Co., Ltd. Method and system for reference signal pattern design
US8238483B2 (en) 2009-02-27 2012-08-07 Marvell World Trade Ltd. Signaling of dedicated reference signal (DRS) precoding granularity
US20100232384A1 (en) 2009-03-13 2010-09-16 Qualcomm Incorporated Channel estimation based upon user specific and common reference signals
KR200471652Y1 (ko) 2013-08-07 2014-03-12 남경탁 의자 일체형 가구

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101729457B (zh) * 2008-10-17 2013-01-09 上海交通大学 动态子载波关联有限比特反馈和调度方法
CN102474317A (zh) * 2009-07-20 2012-05-23 英特尔公司 用于无线通信系统中的频率选择信道的mimo波束成形的技术
CN102474317B (zh) * 2009-07-20 2016-05-11 英特尔公司 用于无线通信系统中的频率选择信道的mimo波束成形的装置、方法和系统
US9094990B2 (en) 2010-09-24 2015-07-28 Intel Corporation Device, system and method of multi-user multi-input-multi-output wireless communication
CN103119856B (zh) * 2010-09-24 2016-05-11 英特尔公司 多用户多输入多输出无线通信的装置、系统和方法
CN103119856A (zh) * 2010-09-24 2013-05-22 英特尔公司 多用户多输入多输出无线通信的装置、系统和方法
CN109039565A (zh) * 2012-03-16 2018-12-18 北京新岸线移动多媒体技术有限公司 一种资源调度方法及装置
CN104158577B (zh) * 2014-08-27 2017-08-11 北京邮电大学 一种3d‑mimo系统的波束赋形实现方法
CN104158577A (zh) * 2014-08-27 2014-11-19 北京邮电大学 一种3d-mimo系统的波束赋形实现方法
CN107210988A (zh) * 2015-01-23 2017-09-26 Lg 电子株式会社 在无线通信系统中通过设备对设备通信终端产生信号的方法和装置
CN107210988B (zh) * 2015-01-23 2021-05-04 Lg 电子株式会社 在无线通信系统中通过设备对设备通信终端产生信号的方法和装置
CN105071845A (zh) * 2015-08-03 2015-11-18 北京邮电大学 一种波束赋形方法及基站
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CN105071845B (zh) * 2015-08-03 2018-06-29 北京邮电大学 一种波束赋形方法及基站
CN105071844A (zh) * 2015-08-03 2015-11-18 北京邮电大学 确定波束赋形权重矢量的方法及装置
CN108347274A (zh) * 2017-01-25 2018-07-31 华为技术有限公司 一种指示反馈的波束数量的方法及装置
CN108347274B (zh) * 2017-01-25 2021-07-16 华为技术有限公司 一种指示反馈的波束数量的方法及装置

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