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HK1062969A1 - Spectrunm spreading communication system using single spreading code - Google Patents

Spectrunm spreading communication system using single spreading code

Info

Publication number
HK1062969A1
HK1062969A1 HK04105766A HK04105766A HK1062969A1 HK 1062969 A1 HK1062969 A1 HK 1062969A1 HK 04105766 A HK04105766 A HK 04105766A HK 04105766 A HK04105766 A HK 04105766A HK 1062969 A1 HK1062969 A1 HK 1062969A1
Authority
HK
Hong Kong
Prior art keywords
spreading
spectrunm
communication system
spreading code
code
Prior art date
Application number
HK04105766A
Other languages
English (en)
Inventor
Takayuki Kondo
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corp filed Critical Nec Corp
Publication of HK1062969A1 publication Critical patent/HK1062969A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/709—Correlator structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B2001/70706—Spread spectrum techniques using direct sequence modulation using a code tracking loop, e.g. a delay locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radio Relay Systems (AREA)
HK04105766A 1998-03-04 2004-08-04 Spectrunm spreading communication system using single spreading code HK1062969A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10052292A JP2894340B1 (ja) 1998-03-04 1998-03-04 スペクトラム拡散通信方式

Publications (1)

Publication Number Publication Date
HK1062969A1 true HK1062969A1 (en) 2004-12-03

Family

ID=12910738

Family Applications (1)

Application Number Title Priority Date Filing Date
HK04105766A HK1062969A1 (en) 1998-03-04 2004-08-04 Spectrunm spreading communication system using single spreading code

Country Status (8)

Country Link
US (2) US6480523B1 (xx)
EP (3) EP0940926B1 (xx)
JP (1) JP2894340B1 (xx)
KR (1) KR100298975B1 (xx)
CN (2) CN1321505C (xx)
BR (1) BRPI9900670B1 (xx)
DE (1) DE69925656T2 (xx)
HK (1) HK1062969A1 (xx)

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US7068623B1 (en) * 2000-01-10 2006-06-27 Nortel Networks Limited Communicating traffic over a wireless channel in a mobile communications system
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DE60033186T2 (de) * 2000-03-27 2007-11-08 Fujitsu Ltd., Kawasaki Multibenutzerempfänger und Kommunikationssystem für die Multicodeübertragung
ATE262758T1 (de) 2000-04-04 2004-04-15 Mitsubishi Electric Inf Tech Verfahren zur übertragung einer nachricht zur anzeigung der anzahl der spreizkoden die den mobilen stationen, in kommunication mit einer basisstation, zugeteilt sind
JP2001326584A (ja) 2000-05-18 2001-11-22 Nec Corp パス検出方式と受信装置
JP3670555B2 (ja) * 2000-05-24 2005-07-13 株式会社エヌ・ティ・ティ・ドコモ 無線通信装置及び無線通信方法
JP2002026767A (ja) * 2000-07-04 2002-01-25 Nec Corp Ｃｄｍａ受信装置及びパス検出方法
JP2002026768A (ja) 2000-07-07 2002-01-25 Nec Corp 通信装置
JP3676986B2 (ja) * 2001-03-29 2005-07-27 松下電器産業株式会社 無線受信装置及び無線受信方法
US8018903B2 (en) * 2001-11-21 2011-09-13 Texas Instruments Incorporated Closed-loop transmit diversity scheme in frequency selective multipath channels
CN100521667C (zh) * 2003-03-03 2009-07-29 三菱电机株式会社 获取接收到的脉冲无线电信号的方法、系统和装置
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
KR100594111B1 (ko) * 2004-03-12 2006-06-30 삼성전자주식회사 주파수 밴드별 다중 코딩을 사용하는 광대역 무선 접속시스템에서 데이터 전송 방법 및 시스템
US7453855B1 (en) * 2005-12-08 2008-11-18 Meru Networks Multiuser detection and interference suppression techniques for direct sequence spread spectrum systems in which all users employ same spreading code
US7633995B1 (en) * 2006-02-10 2009-12-15 L-3 Communications, Corp. System and method for receiving spread spectrum encoded bursts using a common spreading code
US7639985B2 (en) * 2006-03-02 2009-12-29 Pc-Tel, Inc. Use of SCH bursts for co-channel interference measurements
US20110164526A1 (en) * 2008-09-04 2011-07-07 Bando Chemical Industries Ltd Method and apparatus for uplink signal transmission and channel estimation in wireless access network
US8790406B1 (en) 2011-04-01 2014-07-29 William D. Smith Systems and methods for performing spine surgery
RU2520401C2 (ru) * 2012-10-04 2014-06-27 Межрегиональное общественное учреждение "Институт инженерной физики" Способ повышения скрытности радиоизлучающего средства в радиолинии с ппрч
WO2015047800A1 (en) * 2013-09-24 2015-04-02 Zte Wistron Telecom Ab Method and apparatus for irregular signal transmission in a system with reception gaps
TWI651009B (zh) 2014-02-26 2019-02-11 日商新力股份有限公司 送訊裝置、收訊裝置及資訊處理方法

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Also Published As

Publication number Publication date
US6827483B2 (en) 2004-12-07
DE69925656D1 (de) 2005-07-14
KR100298975B1 (ko) 2001-09-26
BRPI9900670B1 (pt) 2017-05-30
EP2375574A1 (en) 2011-10-12
CN1492612A (zh) 2004-04-28
EP0940926B1 (en) 2005-06-08
JP2894340B1 (ja) 1999-05-24
JPH11252044A (ja) 1999-09-17
US20030112852A1 (en) 2003-06-19
KR19990077586A (ko) 1999-10-25
CN1235442A (zh) 1999-11-17
EP1351406A1 (en) 2003-10-08
EP0940926A3 (en) 2002-12-11
US6480523B1 (en) 2002-11-12
DE69925656T2 (de) 2006-05-11
EP1351406B1 (en) 2015-04-01
EP0940926A2 (en) 1999-09-08
CN1113496C (zh) 2003-07-02
BR9900670A (pt) 2000-01-18
CN1321505C (zh) 2007-06-13

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Legal Events

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PE Patent expired

Effective date: 20190303