CN102215512B - Methods, devices and systems for transmitting and receiving signals in microwave communication - Google Patents
Methods, devices and systems for transmitting and receiving signals in microwave communication Download PDFInfo
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- CN102215512B CN102215512B CN201010143082.7A CN201010143082A CN102215512B CN 102215512 B CN102215512 B CN 102215512B CN 201010143082 A CN201010143082 A CN 201010143082A CN 102215512 B CN102215512 B CN 102215512B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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Abstract
The embodiment of the invention discloses methods, devices and systems for transmitting and receiving signals in microwave communication, which relate to the technical field of communication and aim to effectively improve the transmission efficiency of a microwave communication system. The signal transmission method comprises the following steps of: uniformly receiving the channel condition information, fed back by a receiver, of each sub-channel in a channel, wherein own frequency bands of each sub-channel are not overlapped; and performing optimization management on each sub-channel according to channel condition information sets of each sub-channel, so that each sub-channel simultaneously transmits the signals by adopting own transmission ways. The methods, the devices and the systems can be used for the communication systems.
Description
Technical field
The present invention relates to communication technical field, relate in particular in a kind of microwave communication the method, the Apparatus and system that send, receive signal.
Background technology
Microwave communication is a kind of important means of communication, in the fields such as digital junction transmission network, private wire network (as electric power, army etc.) and large enterprises' access of the base station of mobile cellular system backhaul transport, transmission network metropolitan area network construction, radio and television, have a very wide range of applications at present.Because microwave communication does not need solid dielectric, adopt wireless channel to communicate, so the quality of wireless channel directly affect the performance of microwave telecommunication system.
Wireless channel can change along with the variation of weather condition, surrounding environment etc., and the channel in-band noise also can change along with the variation of surrounding environment, from good channel, becomes difference channel.In the situation that good channel can carry more bit (Bit) number, channel capacity is higher.In the situation that difference channel, the Bit number that can carry is less, and channel capacity is lower.When channel becomes difference channel from good channel, if the modulating-coding pattern sending mode while at this moment also having adopted channel will cause the system communication link-quality to reduce, even cause link to communicate by letter.And when channel has become channel from difference channel, if the sending mode while at this moment adopting channel circumstance poor can cause efficiency of transmission greatly to reduce, the waste frequency spectrum resource.Therefore, existing microwave telecommunication system has the ability according to channel quality change in real time and adjustment System coded system and modulating mode usually, be adaptive coding and modulating (ACM, Adaptive Code and Modulation) function, usually according to the unified sending mode of adjusting whole frequency range channel of channel condition information.
Yet, in microwave telecommunication system especially broadband system, because channel width is wider, the factor such as multipath transmisstion, noise only affects the wireless channel of band segment, therefore adopt prior art, according to the unified sending mode of adjusting whole frequency range channel of channel condition information, for not having affected wireless channel to change equally its sending mode, like this, will reduce the efficiency of transmission of microwave telecommunication system.
Summary of the invention
The main purpose of the embodiment of the present invention is, the method that sends, receives signal is provided in a kind of microwave communication, and Apparatus and system can effectively improve the efficiency of transmission of microwave telecommunication system.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of method of transmitted signal in microwave communication comprises:
The channel condition information of each sub-channels in the channel of unified reception receiving terminal feedback, the non-overlapping copies of frequency range separately of described each sub-channels;
Concentrate each described subchannel is optimized to management according to the channel condition information of each described subchannel, make each described subchannel adopt respectively sending mode transmitted signal separately.
Receive the method for signal in a kind of microwave communication, comprising:
Reception is by the signal that in channel, each sub-channels sends respectively, the non-overlapping copies of frequency range separately of described each sub-channels;
Each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unification feeds back to transmitting terminal by the channel condition information of each described subchannel.
Dispensing device in a kind of microwave communication comprises:
The ACM unit, for unified receive the receiving terminal feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, concentrate each described subchannel be optimized to management according to the channel condition information of each described subchannel;
At least two sub-channels transmitting elements, adopt respectively sending mode while transmitted signal separately for making each described subchannel.
Receiving system in a kind of microwave communication comprises:
At least two sub-channels receiving elements, for receiving respectively by the channel signal that corresponding subchannel sends in each sub-channels of frequency range non-overlapping copies separately;
The channel monitoring unit, for each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, and unification feeds back to transmitting terminal by the channel condition information of each described subchannel.
A kind of microwave telecommunication system comprises:
Dispensing device and receiving system, described receiving system receives the signal that described dispensing device sends;
Wherein, described dispensing device for unified receive described receiving system feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, and concentrate each described subchannel is optimized to management according to the channel condition information of each described subchannel, make each described subchannel adopt respectively sending mode while transmitted signal separately;
Described receiving system is for receiving described dispensing device by the channel signal that each sub-channels of frequency range non-overlapping copies sends respectively separately, each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unification feeds back to described dispensing device by the channel condition information of each described subchannel.
After adopting technique scheme, in the microwave communication that the embodiment of the present invention provides, send, receive the method for signal, send, receiving system and system, broad-band channel in microwave communication is divided into to a plurality of subchannels of frequency range non-overlapping copies separately, signal is communicated by a plurality of subchannels of different frequency range, and manage the sending mode of each subchannel concentratedly, dynamically adjust the sending mode of each subchannel according to the channel quality of each sub-channels, make each subchannel can adopt optimum separately sending mode transmitted signal simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.
The accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below will the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Send the flow chart of the method for business in the microwave communication that Fig. 1 provides for the embodiment of the present invention;
Receive the flow chart of the method for business in the microwave communication that Fig. 2 provides for the embodiment of the present invention;
The structured flowchart of the dispensing device that Fig. 3 provides for the embodiment of the present invention;
The system architecture diagram that Fig. 4 is the embodiment of the present invention one;
The structural representation of the ACM unit that Fig. 5 is the embodiment of the present invention two;
The system architecture diagram that Fig. 6 is the embodiment of the present invention three;
The structured flowchart of the receiving system that Fig. 7 provides for the embodiment of the present invention;
The system architecture diagram that Fig. 8 is the embodiment of the present invention four;
The structural representation of the ACM unit that Fig. 9 is the embodiment of the present invention five;
The system architecture diagram that Figure 10 is the embodiment of the present invention six;
The structured flowchart of the microwave telecommunication system that Figure 11 provides for the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making under the creative work prerequisite the every other embodiment obtained, belong to the scope of protection of the invention.
Embodiments of the invention aim to provide in a kind of microwave communication the method that sends, receives signal, and transmission, receiving system and microwave telecommunication system can effectively improve the efficiency of transmission of microwave telecommunication system.
The method of transmitted signal in the microwave communication that the embodiment of the present invention provides, flow chart as shown in Figure 1 comprises the following steps:
The channel condition information of each sub-channels in the channel of S11, unified reception receiving terminal feedback, the non-overlapping copies of frequency range separately of described each sub-channels;
The method of the transmitted signal that the embodiment of the present invention provides, wireless channel is divided into to a plurality of subchannels, non-overlapping copies between the frequency range of each sub-channels, by a plurality of subchannel transmitted signals, therefore, in the process of transmitted signal, transmitting terminal will receive the channel condition information of each sub-channels that receiving terminal feeds back by feedback path.Wherein, the channel condition information of receiving terminal feedback can be the channel information parameter of each current period of subchannel, and described channel information parameter comprises the relevant parameters such as MSE, SNR and error code information; Can be also each current period of subchannel, the mode parameters that comprise the configuration parameters such as optimal modulation pattern, coding mode and transmitted power that receiving terminal calculates according to above-mentioned relevant parameter.Transmitting terminal can unify to receive signal acquisition and the channel information parameter directly feed back to transmitting terminal by feedback path that receiving terminal receives by detection, can also unify to receive the channel information parameter of the signal acquisition that receiving terminal receives by detection, according to channel information parameter current each subchannel of period, the mode parameters feed back to transmitting terminal by feedback channel that calculate by certain optimized algorithm.
S12, according to the channel condition information of each described subchannel, concentrate each described subchannel is optimized to management, make each described subchannel adopt respectively sending mode transmitted signal separately.
In this step, transmitting terminal is concentrated each sub-channels is carried out to the ACM modulation, if the channel condition information received in S 11 steps is the channel information parameter, the MSE of each subchannel for example, during the relevant parameters such as SNR and error code information, in this step, transmitting terminal will be managed concentratedly each subchannel, will be according to the channel information parameter, adopt certain optimized algorithm to calculate the mode parameters of current each subchannel of period, comprise the optimal modulation pattern, the configuration parameter such as coding mode and transmitted power etc., and mode parameters is sent to respectively to each corresponding subchannel, make each subchannel adopt respectively optimum mode parameters transmitted signal separately, to guarantee maximized system efficiency of transmission, and if the channel condition information received in the S11 step has comprised the mode parameters of each current period of subchannel of current period, transmitting terminal can directly send to mode parameters respectively each corresponding subchannel, makes each subchannel adopt respectively optimum mode parameters transmitted signal separately.In S11 and S12 step, the management that each subchannel is concentrated, can guarantee the maximization of efficiency of transmission.
Further, the method for the transmitted signal that the present embodiment provides, after the S12 step, also comprises: the signal that adopts respectively sending mode separately to send each described subchannel is combined into a road signal and is sent.The signal that each subchannel is sent is closed road, and a synthetic road signal is sent, and so neither affects the sending mode of each subchannel, and can reduce hardware complexity and cost, improves the performance of microwave telecommunication system.Certainly, the invention is not restricted to this mode, can be according to the actual conditions setting.
The method of the transmitted signal that the embodiment of the present invention provides, manage the sending mode of each subchannel concentratedly, makes each subchannel can adopt optimum sending mode transmitted signal separately simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.
Correspondingly, as shown in Figure 2, the embodiment of the present invention also provides a kind of method that receives signal in microwave communication, comprising:
S21, receive by the signal that in channel, each sub-channels sends respectively the non-overlapping copies of frequency range separately of described each sub-channels;
The method that the signal provided in the embodiment of the present invention receives, wireless channel is divided into to a plurality of subchannels, non-overlapping copies between the frequency range of each sub-channels, signal is that the sub-channel parallel by a plurality of frequency range non-overlapping copies sends, so the receiving terminal signal of wanting receiving end/sending end to send respectively by each subchannel.While being sent after signal that transmitting terminal sends respectively each subchannel carries out the Liao He road, at this moment, receiving terminal will carry out shunt to the received signal resolves, and now this step specifically can be:
Receive signal;
The signal of reception is resolved to along separate routes by the signal that in channel, each sub-channels of frequency range non-overlapping copies sends respectively separately.
S22, each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unified the channel condition information of each described subchannel is fed back to transmitting terminal.
In this step, receiving terminal carries out centralized monitor to each sub-channels, obtains the channel condition information of each subchannel, and the channel condition information of each subchannel is fed back to transmitting terminal.
Receiving terminal is detected by the signal that passes through each sub-channels transmission to receiving, and can obtain the channel condition information of current each subchannel of period, and wherein, the channel condition information of receiving terminal feedback can be channel information parameter or mode parameters.Receiving terminal can be according to the signal transmitted by each subchannel, obtain the current period of each subchannel the channel information parameter, comprise the parameters such as MSE, SNR and error code information, and this channel condition information is directly passed through to the feedback path unified feedback to transmitting terminal, the indication transmitting terminal carries out the ACM modulation to each subchannel; Receiving terminal can also be according to the above-mentioned channel information parameter detected, as relevant parameters such as MSE, SNR and error code information, adopt certain optimized algorithm calculate current each subchannel of period mode parameters, comprise the configuration parameters such as optimal modulation pattern, coding mode and transmitted power etc., and this channel condition information that will comprise mode parameters by the feedback path unified feedback to transmitting terminal.Wherein, each subchannel is carried out to centralized monitor and unified management, can guarantee the maximization of efficiency of transmission.
Like this, the method of the reception signal that the embodiment of the present invention provides, can receive the signal transmitted by a plurality of subchannels, and the channel situation unified feedback of each sub-channels that will detect is to transmitting terminal, the notice transmitting terminal carries out the ACM modulation to each subchannel respectively according to the channel conditions of each subchannel, and like this, the ACM of each subchannel modulation is independent of one another, make each subchannel can adopt optimum sending mode transmitted signal separately simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.
In sum, the transmitted signal provided when the microwave telecommunication system application embodiment of the present invention and while receiving the method for signal, broad-band channel is divided into to a plurality of subchannels of frequency range non-overlapping copies separately, signal is sent by a plurality of subchannels of different frequency range, and manage the sending mode of each subchannel concentratedly, dynamically adjust the sending mode of each subchannel according to the channel quality of each sub-channels, make each subchannel can adopt optimum separately sending mode transmitted signal simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.For example, when adopting subchannel 1, when subchannel 2 and subchannel 3 three sub-channels carry out the transmission of signal, suppose in a certain period, the channel conditions variation, darker recess and larger noise appear in the frequency band of subchannel 3, at this moment, by the channel condition information that detects each subchannel, each subchannel is modulated, make subchannel 3 adopt the modulating mode of lower-order, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order, so just do not need the order of modulation that reduces whole system make three sub-channels adopt lower order modulated simultaneously and adopt the coding mode that code check is lower or complexity is higher, further improved efficiency of transmission.
As shown in Figure 3, the dispensing device of the microwave telecommunication system that the embodiment of the present invention provides comprises:
ACM unit 10, for unified receive the receiving terminal feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, concentrate each described subchannel be optimized to management according to the channel condition information of each described subchannel;
At least two sub-channels transmitting elements 20, adopt respectively sending mode while transmitted signal separately for making each described subchannel.
The dispensing device that the embodiment of the present invention provides, by adopting a plurality of subchannel transmitting elements 20, make signal by channel separately a plurality of subchannels of frequency range non-overlapping copies sent, and according to the channel condition information of each subchannel, each subchannel information by ACM unit 10 according to feedback, to each subchannel centralized management, configure the sending mode of each sub-channels, make each sub-channels can adopt optimum sending mode transmitted signal separately simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.
Wherein, sending mode comprises the configuration parameters such as optimal modulation pattern, coding mode and transmitted power.What note here is, channel condition information can be the channel information parameter of each subchannel, comprise MSE, SNR and error code information etc., also can, for the mode parameters of each current period of subchannel of obtaining according to the channel information calculation of parameter, comprise the configuration parameters such as optimal modulation pattern, coding mode and transmitted power.
Further, as shown in Figure 3, the dispensing device that the embodiment of the present invention provides, also can comprise combiner unit 30, and the signal sent for the subchannel sending mode each described subchannel transmitting element 20 adopted respectively separately is combined into a road signal and is sent.The signal that combiner unit 30 can send each subchannel is closed road, and a synthetic road signal is sent, and so neither affects the sending mode of each subchannel, and can reduce hardware complexity and cost, improves the performance of microwave telecommunication system.Certainly, the invention is not restricted to this mode, can be according to the actual conditions setting.
The dispensing device embodiment of the present invention provided below by specific embodiment is elaborated.
Embodiment mono-
As shown in Figure 4, the dispensing device that the present embodiment provides, comprise ACM unit 10, three sub-channels transmitting elements 20, be respectively subchannel transmitting element 1, subchannel transmitting element 2 and subchannel transmitting element 3, the dispensing device that is the present embodiment is that be different frequency range by the WiMAX channel distribution, the 3 sub-channels frequency range non-overlapping copies, by 3 sub-channels while transmitted signals; In addition, the present embodiment also comprises combiner unit 30, and the signal that three sub-channels transmitting elements 20 are sent carries out signal and closes road.
Wherein, ACM unit 10 comprises:
Feedback information receiver module 102, the channel fed back for unified reception is the channel condition information of each sub-channels of frequency range non-overlapping copies separately, and described channel condition information is sent to ACM module 101.
Further, ACM module 101 can comprise:
Receive submodule 1011, the mode parameters sent for receiving feedback information receiver module 102;
In addition, ACM module 101 also can comprise initial configuration submodule 1013, during for the initialization signal, configures the initial mode parameters of each subchannel, and is handed down to each subchannel transmitting element by issuing module 1012.
When the present embodiment is applied to communication system, when initial, the initial configuration submodule 1013 of ACM module 101 is handed down to each subchannel transmitting element 20 by the mode parameters of configuration by issuing submodule 1012; Mode parameters comprises the configuration parameters such as modulating mode, coding mode and transmitted power, and each subchannel transmitting element 20 carries out the signal transmission according to the parameter instruction issued:
At first coding and modulation module 201 carry out coded modulation according to the modulation in mode parameters and coding mode parameter to three roadbed band signals;
After baseband signal processing module 202 is processed, D/A converter module 203 transfers digital signal to analog signal;
Up-converter module 204 is modulated to different intermediate frequencies at analog domain by the baseband signal of each subchannel;
Then, carry out signal by 30 pairs of combiner units and close road:
At first three tunnel intermediate-freuqncy signals are combined into to a road intermediate-freuqncy signal by mixer 301;
Be modulated to radio frequency by modulation module 302 again, radio frequency processing module 303 sends signal according to the transmitted power parameter in the sending mode issued.
After communication link is set up, the unified mode parameters that receives each subchannel of receiving terminal feedback of feedback information receiver module 102, comprise the configuration parameters such as optimal modulation pattern, coding mode and transmitted power, and mode parameters is sent to and receives submodule 1011; After reception submodule 1011 receives configuration parameter, send to and issue submodule 1012; Issue submodule 1012 configuration parameter of each subchannel is issued to each subchannel transmitting element 20; Each subchannel transmitting element 20 is sent according to the configuration parameter received, and process of transmitting is the same with initialized process.
The present embodiment is managed coded system, modulating mode and the transmitted power of each subchannel concentratedly according to the channel information of feedback by ACM unit 10, dynamically adjust coded system, modulating mode and the transmitted power of each subchannel, guarantees the maximization of efficiency of transmission.
Embodiment bis-
The framework of the dispensing device that the present embodiment provides is identical with embodiment mono-, comprises ACM unit 10, three sub-channels transmitting elements 20 and combiner unit 30.Wherein, subchannel transmitting element 20 and combiner unit 30 all adopt the functional structure identical with embodiment mono-, repeat no more here.
Different from embodiment mono-, the ACM unit 10 of the present embodiment adopts the structure shown in Fig. 5.As shown in Figure 5, with the ACM unit 10 of embodiment mono-, compare, the ACM unit of the present embodiment also comprises calculating sub module 1014, for the mode parameters of each subchannel of channel information calculation of parameter according to receiving submodule 1011 receptions, and the mode parameters of each subchannel is sent to and issues submodule 1012.
The present embodiment is applicable to received, the channel information parameter that the channel condition information of receiving terminal feedback is each current period of subchannel, comprise MSE, SNR and the isoparametric situation of error code information, receiving submodule 1011 represents the channel information parameter of channel condition information and sends to calculating sub module 1014 for reception, calculating sub module 1014 is calculated the mode parameters of each subchannel according to relevant parameter, and mode parameters is sent to and issues submodule 1012, then issue submodule 1012 mode parameters of each subchannel is handed down to each subchannel transmitting element 20, each subchannel transmitting element 20 carries out the signal transmission according to the parameter issued.
Embodiment tri-
The framework of the dispensing device that the present embodiment provides is identical with embodiment mono-and embodiment bis-, comprises ACM unit 10, three sub-channels transmitting elements 20 and combiner unit 30.Wherein, ACM unit 10 can adopt the functional structure identical with embodiment mono-or embodiment bis-, repeats no more here.
As shown in Figure 6, different from embodiment mono-or embodiment bis-, the subchannel transmitting element 20 of the present embodiment, comprise coding and baseband modulation module 201, baseband signal processing module 202, up-converter module 204 and analog-to-digital conversion module 203, also comprise modulation module 302; Combiner unit 30 comprises mixer 301 and radio frequency processing module 303.Like this, when carrying out the signal transmission, at first coding and baseband modulation module 201 are carried out coded modulation according to the modulation in mode parameters and coding mode to three roadbed band signals; After baseband signal processing module 202 is processed, it is the intermediate-frequency band signal that 204 pairs of signals of up-converter module carry out Digital Up Convert, and analog-to-digital conversion module 203 transfers digital signal to analog signal; Three road analog if signals are modulated respectively through modulation module 302, are modulated to the different radio frequency section, obtain three tunnel radiofrequency signals.Mixer 301Jiang tri-road analog radio-frequency signals are combined into a road, after radio frequency processing module 303 is processed, send to channel.
As shown in Figure 7, the receiving system of the microwave telecommunication system that the embodiment of the present invention provides comprises:
At least two sub-channels receiving elements 50, for receiving respectively by the channel signal that corresponding subchannel sends in each sub-channels of frequency range non-overlapping copies separately;
The receiving system that the embodiment of the present invention provides, can receive the signal sent through a plurality of subchannels, and the channel situation that detects each sub-channels is also concentrated and is fed back to transmitting terminal, the notice transmitting terminal carries out the ACM modulation to each subchannel respectively according to the channel conditions of each subchannel, like this, the ACM modulation of each subchannel is independent of one another, makes each subchannel can adopt optimum sending mode transmitted signal separately simultaneously, has effectively improved the efficiency of transmission of microwave telecommunication system.
Further, while being sent after signal that the corresponding dispensing device of the receiving system that the embodiment of the present invention provides sends respectively each subchannel carries out the Liao He road, as shown in Figure 8, the receiving system that the embodiment of the present invention provides, also comprise branching unit 60, for receiving signal, the signal that the signal of reception is resolved to along separate routes by channel, each sub-channels of frequency range non-overlapping copies sends respectively separately receives signal, and the signal that will send by each subchannel sends to respectively each subchannel receiving element 50.Can reduce hardware complexity and cost like this, improve the performance of microwave telecommunication system.Certainly, the invention is not restricted to this mode, can be according to the actual conditions setting.
The receiving system embodiment of the present invention provided below by specific embodiment is elaborated.
Embodiment tetra-
As shown in Figure 8, the receiving system that the present embodiment provides, comprise channel monitoring unit 40, three sub-channels receiving elements 50, be about to that the WiMAX channel distribution is that be different frequency range, the 3 sub-channels frequency range non-overlapping copies, can receive the signal simultaneously sent by 3 sub-channels; In addition, the present embodiment also comprises branching unit 60.
Wherein, channel monitoring unit 40 comprises:
Feedback module 402, feed back to transmitting terminal for unified by the channel condition information of each described subchannel.
Further, signal monitoring module 401 can comprise:
Parameter receives submodule 4011, for obtaining the channel information parameter of each subchannel; Wherein, the channel information parameter comprises the relevant parameters such as MSE, SNR and error code information;
Send submodule 4012, for the mode parameters by each subchannel, send to feedback module 402.
Calculating sub module 4013, calculate the mode parameters of each subchannel for receive channel parameter information that submodule 4011 obtains according to parameter.
When the present embodiment is applied to communication system, the dispensing devices that can provide with embodiment mono-etc. form communication system, as shown in Figure 8,603 pairs of radiofrequency signals that receive of the radio frequency processing module of branching unit 60 are processed, and be transferred to intermediate frequency by demodulation module 602 solutions, by splitter 601, intermediate-freuqncy signal is divided into to three tunnel intermediate-freuqncy signals, sends to respectively corresponding subchannel receiving element 50; Down conversion module 504 down-converts the signals to base band and obtains baseband signal; D/A converter module 503 is sampled as digital signal by analog baseband signal; After baseband signal processing module 502 is processed, base band demodulating and decoder module 501 will calculate the channel information parameter according to the digital baseband signal received, and such as SNR, MSE and error code information etc., and be sent to channel monitoring module 401; The parameter of channel monitoring module 401 receives submodule 4011 receiving channel information parameters, and is sent to calculating sub module 4013 and is calculated; Calculating sub module 4013 goes out the mode parameters of each subchannel according to the channel information calculation of parameter, comprise optimal modulation pattern, coding mode and transmitted power, such as adopting water flood; Send submodule 4012 mode parameters is sent to feedback module 402; Feedback module feeds back to transmitting terminal by feedback path by mode parameters.
Embodiment five
The framework of the dispensing device that the present embodiment provides is identical with embodiment tetra-, comprises channel monitoring unit 40, three sub-channels receiving elements 50 and branching unit 60.Wherein, three sub-channels receiving elements 50 and branching unit 60 all adopt the functional structure identical with embodiment tetra-, repeat no more here.
Different from embodiment tetra-, as shown in Figure 9, the channel monitoring unit 40 that the present embodiment provides, do not comprise calculating sub module 4013, only comprises that parameter receives submodule 4011 and sends submodule 4012.At this moment, parameter receives submodule 4011 for obtaining the channel information parameter of each subchannel; The channel information parameter comprises the relevant parameters such as MSE, SNR and error code information; Send submodule 4012 and send to feedback module 402 for the channel information parameter by each subchannel; Feedback module 402 by feedback path by the channel information parameter feedback of each subchannel to transmitting terminal.The present embodiment can be used in conjunction with the dispensing device of embodiment bis-.
Embodiment six
The framework of the receiving system that the present embodiment provides is identical with embodiment tetra-and embodiment five, comprises channel monitoring unit 40, three sub-channels receiving elements 50 and branching unit 60.Wherein, Unit 40, channel monitoring unit can adopt the functional structure identical with embodiment mono-or embodiment bis-, repeat no more here.
As shown in figure 10, different from embodiment tetra-or embodiment five, the subchannel receiving element 50 of the present embodiment, comprise decoding and baseband modulation module 501, baseband signal processing module 502, down conversion module 504 and D/A converter module 503, also comprise demodulation module 602; Branching unit 60 comprises splitter 601 and radio frequency processing module 603.Like this, when receiving signal, receive a road radiofrequency signal; After radio frequency processing module 603 is processed, be divided into three road signals by splitter 601, send to respectively corresponding subchannel receiving element 50; Demodulation module 602 carries out demodulation to three tunnel radiofrequency signals respectively, and solution is transferred to identical Mid Frequency; D/A converter module 503Jiang tri-road analog if signals transfer digital signal to; Down conversion module 504 adopts Digital Down Convert that three railway digital intermediate-freuqncy signals are down-converted to base band, obtains three railway digital baseband signals.Decoding and baseband modulation module 501 will calculate the channel information parameter according to the digital baseband signal received, such as SNR, MSE and error code information etc.The present embodiment can be used in conjunction with the dispensing device of embodiment tri-.
Receiving system based on above-mentioned and dispensing device, embodiments of the invention also provide a kind of microwave telecommunication system, as shown in figure 11, comprising: dispensing device 7 and with receiving system 8, wherein
Receiving system 8 for transmission and reception apparatus 7 by the channel signal that each sub-channels of frequency range non-overlapping copies sends respectively separately, each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unification feeds back to dispensing device 7 by the channel condition information of each described subchannel.
Further, the signal that dispensing device 7 also adopts respectively sending mode separately to send for each described subchannel just is combined into a road signal and is sent;
Receiving system 8 is also for receiving signal, and the signal of reception is resolved to the signal that the subchannel by each different frequency range sends respectively along separate routes.
The microwave telecommunication system that the embodiment of the present invention provides, broad-band channel is divided into to a plurality of subchannels of frequency range non-overlapping copies separately, signal is communicated by a plurality of subchannels of different frequency range, and manage the sending mode of each subchannel concentratedly, dynamically adjust the sending mode of each subchannel according to the channel quality of each sub-channels, make each subchannel can adopt optimum separately sending mode transmitted signal simultaneously, effectively improved the efficiency of transmission of microwave telecommunication system.
Wherein, dispensing device and receiving system that dispensing device 7 and receiving system 8 all adopt the embodiment of the present invention to provide, front has been described in detail, and repeats no more here.
One of ordinary skill in the art will appreciate that: realize that the hardware that all or part of flow process of said method embodiment can be relevant by computer program instructions completes, aforesaid program can be stored in a computer read/write memory medium, this program, when carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (19)
1. the method for transmitted signal in a microwave communication, is characterized in that, comprising:
The channel condition information of each sub-channels in the channel of unified reception receiving terminal feedback, the non-overlapping copies of frequency range separately of described each sub-channels;
Concentrate each described subchannel is optimized to management according to the channel condition information of each described subchannel, make each described subchannel adopt respectively sending mode while transmitted signal separately;
Described channel condition information comprises the mode parameters of current period of each subchannel;
Described to each described subchannel be optimized the management comprise: each sub-channels is carried out to the ACM modulation;
When adopting subchannel 1, subchannel 2 and subchannel 3 three sub-channels to carry out the transmission of signal, darker recess and larger noise appear in the frequency band of subchannel 3, make the modulating mode of subchannel 3 employing lower-orders, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order.
2. method according to claim 1, is characterized in that, in the channel of described unified reception receiving terminal feedback, the channel condition information of each sub-channels comprises:
The channel information parameter of each sub-channels in the channel of unified reception receiving terminal feedback; Perhaps
The mode parameters of each sub-channels in the channel of unified reception receiving terminal feedback.
3. method according to claim 2, is characterized in that, described each described subchannel that makes adopts respectively sending mode while transmitted signal separately to comprise:
Make each described subchannel adopt respectively mode parameters separately, that obtain according to described channel information calculation of parameter transmitted signal simultaneously; Perhaps
Make each described subchannel adopt respectively described mode parameters while transmitted signal separately.
4. method according to claim 1, is characterized in that, also comprises: the signal that adopts respectively sending mode separately to send each described subchannel is combined into a road signal and is sent.
5. receive the method for signal in a microwave communication, it is characterized in that, comprising:
Reception is by the signal that in channel, each sub-channels sends respectively, the non-overlapping copies of frequency range separately of described each sub-channels;
Each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unification feeds back to transmitting terminal by the channel condition information of each described subchannel, and described channel condition information comprises channel information parameter or the mode parameters of each described current period of subchannel;
Described channel condition information is used to each sub-channels is carried out to the ACM modulation;
When adopting subchannel 1, subchannel 2 and subchannel 3 three sub-channels to carry out the transmission of signal, darker recess and larger noise appear in the frequency band of subchannel 3, make the modulating mode of subchannel 3 employing lower-orders, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order.
6. method according to claim 5, is characterized in that, the described channel condition information of obtaining each described subchannel, and unification feeds back to transmitting terminal by the channel condition information of each described subchannel and comprises:
Obtain the channel information parameter of each described subchannel, unify the channel information parameter feedback of each described subchannel to transmitting terminal; Perhaps
Obtain the channel information parameter of each described subchannel, obtain the mode parameters of each subchannel according to described channel information calculation of parameter, unification feeds back to transmitting terminal by the mode parameters of each described subchannel.
7. method according to claim 5, is characterized in that, described reception is specially by the signal that in channel, each sub-channels sends respectively:
Receive signal;
The signal of reception is resolved to along separate routes by the signal that in channel, each sub-channels sends respectively.
8. the dispensing device in a microwave communication, is characterized in that, comprising:
The ACM unit, for unified receive the receiving terminal feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, concentrate each described subchannel be optimized to management according to the channel condition information of each described subchannel;
At least two sub-channels transmitting elements, adopt respectively sending mode while transmitted signal separately for making each described subchannel;
Described channel condition information comprises the mode parameters of current period of each subchannel;
Described to each described subchannel be optimized the management comprise: each sub-channels is carried out to the ACM modulation;
When adopting subchannel 1, subchannel 2 and subchannel 3 three sub-channels to carry out the transmission of signal, darker recess and larger noise appear in the frequency band of subchannel 3, make the modulating mode of subchannel 3 employing lower-orders, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order.
9. dispensing device according to claim 8, is characterized in that, also comprises combiner unit, and the signal sent for the subchannel sending mode each described subchannel transmitting element adopted respectively separately is combined into a road signal and is sent.
10. dispensing device according to claim 8, is characterized in that,
Described ACM unit comprises feedback information receiver module and ACM module; Wherein
The feedback information receiver module for unified receive the receiving terminal feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, and described channel condition information is sent to described ACM module;
The ACM module is concentrated each described subchannel is optimized to management for the channel condition information according to each described subchannel.
11. dispensing device according to claim 10, is characterized in that,
Described ACM module comprises the reception submodule and issues submodule;
Wherein: receive the channel condition information that submodule sends for receiving described feedback information receiver module, described channel condition information comprises channel information parameter or the mode parameters of each described subchannel;
Issue submodule and be handed down to each described subchannel transmitting element for the mode parameters by each described subchannel.
12. dispensing device according to claim 11, it is characterized in that, described ACM module also comprises computing module, for according to described reception submodule, receive, comprise that the channel condition information of channel information parameter calculates the mode parameters of each described subchannel, and the mode parameters of each subchannel is sent to the described submodule that issues.
13. the receiving system in a microwave communication, is characterized in that, comprising:
At least two sub-channels receiving elements, for receiving respectively by the channel signal that corresponding subchannel sends in each sub-channels of frequency range non-overlapping copies separately;
The channel monitoring unit, for each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, and unification feeds back to transmitting terminal by the channel condition information of each described subchannel;
Described channel condition information comprises the mode parameters of current period of each subchannel;
Described channel condition information is used to each sub-channels is carried out to the ACM modulation;
When adopting subchannel 1, subchannel 2 and subchannel 3 three sub-channels to carry out the transmission of signal, darker recess and larger noise appear in the frequency band of subchannel 3, make the modulating mode of subchannel 3 employing lower-orders, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order.
14. receiving system according to claim 13, is characterized in that, also comprises branching unit, for receiving signal, and the signal of reception resolved to along separate routes by the signal that in channel, each sub-channels of frequency range non-overlapping copies sends respectively separately.
15. receiving system according to claim 13, is characterized in that,
Described channel monitoring unit comprises signal monitoring module and feedback module;
Wherein:
Described signal monitoring module, for each described subchannel is carried out to centralized monitor, is obtained channel condition information each subchannel, that comprise channel information parameter or mode parameters;
Described feedback module feeds back to transmitting terminal for unified by the channel condition information of each described subchannel.
16. receiving system according to claim 15, is characterized in that,
Described signal monitoring module comprises that parameter receives submodule and sends submodule;
Wherein:
Parameter receives submodule for obtaining the channel information parameter of each described subchannel;
Described transmission submodule is for sending to described feedback module by each subchannel, channel condition information that comprise channel information parameter or mode parameters.
17. receiving system according to claim 16, it is characterized in that, described signal monitoring module also comprises calculating sub module, calculate the mode parameters of each subchannel for the channel parameter information of obtaining according to described parameter reception submodule, and the mode parameters of each subchannel is sent to described transmission submodule.
18. a microwave telecommunication system, is characterized in that, comprising:
Dispensing device and receiving system, described receiving system receives the signal that described dispensing device sends;
Wherein, described dispensing device for unified receive described receiving system feedback, the channel channel condition information of each sub-channels of frequency range non-overlapping copies separately, and concentrate each described subchannel is optimized to management according to the channel condition information of each described subchannel, make each described subchannel adopt respectively sending mode while transmitted signal separately;
Described receiving system is for receiving described dispensing device by the channel signal that each sub-channels of frequency range non-overlapping copies sends respectively separately, each described subchannel is carried out to centralized monitor, obtain the channel condition information of each described subchannel, unification feeds back to described dispensing device by the channel condition information of each described subchannel;
Described channel condition information comprises the mode parameters of current period of each subchannel;
Described to each described subchannel be optimized the management comprise: each sub-channels is carried out to the ACM modulation;
When adopting subchannel 1, subchannel 2 and subchannel 3 three sub-channels to carry out the transmission of signal, darker recess and larger noise appear in the frequency band of subchannel 3, make the modulating mode of subchannel 3 employing lower-orders, and subchannel 1 and subchannel 2 can adopt the more modulating mode of high-order.
19. microwave telecommunication system according to claim 18, is characterized in that,
Described dispensing device also is combined into a road signal for the signal that just each described subchannel adopts respectively sending mode separately to send and is sent;
Described receiving system is also for receiving signal, and the signal of reception is resolved to the signal that the subchannel by each different frequency range sends respectively along separate routes.
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| CN201010143082.7A CN102215512B (en) | 2010-04-09 | 2010-04-09 | Methods, devices and systems for transmitting and receiving signals in microwave communication |
| PCT/CN2011/072560 WO2011124154A1 (en) | 2010-04-09 | 2011-04-09 | Method, device and system for transmitting and receiving signal in microwave communication |
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| CN1625860A (en) * | 2002-03-22 | 2005-06-08 | 华为技术有限公司 | Self-adaptive weighted space-time transmit diversity method and system thereof |
| CN101286818A (en) * | 2007-04-13 | 2008-10-15 | 普罗维金特公司 | Management of variable-rate communication links |
| CN101299623A (en) * | 2007-04-30 | 2008-11-05 | 华为技术有限公司 | Power distribution method, system and sending terminal |
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| CN1625860A (en) * | 2002-03-22 | 2005-06-08 | 华为技术有限公司 | Self-adaptive weighted space-time transmit diversity method and system thereof |
| CN101286818A (en) * | 2007-04-13 | 2008-10-15 | 普罗维金特公司 | Management of variable-rate communication links |
| CN101299623A (en) * | 2007-04-30 | 2008-11-05 | 华为技术有限公司 | Power distribution method, system and sending terminal |
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