DE69534497D1 - CDMA Kommunikationssystem mit verbesserter Interferenzunterdrückung - Google Patents

CDMA Kommunikationssystem mit verbesserter Interferenzunterdrückung

Info

Publication number
DE69534497D1
DE69534497D1 DE69534497T DE69534497T DE69534497D1 DE 69534497 D1 DE69534497 D1 DE 69534497D1 DE 69534497 T DE69534497 T DE 69534497T DE 69534497 T DE69534497 T DE 69534497T DE 69534497 D1 DE69534497 D1 DE 69534497D1
Authority
DE
Germany
Prior art keywords
communication system
interference suppression
cdma communication
improved interference
improved
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69534497T
Other languages
English (en)
Other versions
DE69534497T2 (de
Inventor
Shousei Yoshida
Akihisa Ushirokawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
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
Application granted granted Critical
Publication of DE69534497D1 publication Critical patent/DE69534497D1/de
Publication of DE69534497T2 publication Critical patent/DE69534497T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0003—Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
    • 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
DE1995634497 1994-12-12 1995-12-08 CDMA Kommunikationssystem mit verbesserter Interferenzunterdrückung Expired - Lifetime DE69534497T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30727594A JP2655108B2 (ja) 1994-12-12 1994-12-12 Ｃｄｍａ送受信装置
JP30727594 1994-12-12

Publications (2)

Publication Number Publication Date
DE69534497D1 true DE69534497D1 (de) 2006-02-16
DE69534497T2 DE69534497T2 (de) 2006-05-11

Family

ID=17967170

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1995634497 Expired - Lifetime DE69534497T2 (de) 1994-12-12 1995-12-08 CDMA Kommunikationssystem mit verbesserter Interferenzunterdrückung

Country Status (4)

Country Link
US (1) US5734647A (de)
EP (1) EP0717520B1 (de)
JP (1) JP2655108B2 (de)
DE (1) DE69534497T2 (de)

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ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US6246715B1 (en) 1998-06-26 2001-06-12 Samsung Electronics Co., Ltd. Data transmitter and receiver of a DS-CDMA communication system
JP2743912B2 (ja) * 1996-05-30 1998-04-28 日本電気株式会社 Ｃｄｍａ干渉除去装置
KR100331530B1 (ko) * 1996-11-07 2002-05-09 모리시타 요이찌 부호생성방법,부호선택방법,기지국장치,이동국장치및통신시스템
US5923651A (en) * 1996-12-23 1999-07-13 Alcatel Usa Sourcing, L.P. Increasing data throughput in a wireless telecommunications environment
JP3431785B2 (ja) * 1996-12-24 2003-07-28 シャープ株式会社 直交周波数多重変調信号復調装置
US5933421A (en) 1997-02-06 1999-08-03 At&T Wireless Services Inc. Method for frequency division duplex communications
US6501771B2 (en) 1997-02-11 2002-12-31 At&T Wireless Services, Inc. Delay compensation
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
US6359923B1 (en) * 1997-12-18 2002-03-19 At&T Wireless Services, Inc. Highly bandwidth efficient communications
US6408016B1 (en) * 1997-02-24 2002-06-18 At&T Wireless Services, Inc. Adaptive weight update method and system for a discrete multitone spread spectrum communications system
US6101228A (en) * 1997-05-22 2000-08-08 Conexant Systems, Inc. Receiver of wideband digital signal in the presence of a narrow band interfering signal
US5917852A (en) * 1997-06-11 1999-06-29 L-3 Communications Corporation Data scrambling system and method and communications system incorporating same
FR2764750A1 (fr) * 1997-06-13 1998-12-18 Canon Kk Dispositif et procede de codage d'informations
EP0884879A3 (de) 1997-06-13 1999-03-17 Canon Kabushiki Kaisha QAM-Übertragung unter Verwendung von Spreizspektrumtechnik, und Folgeschätzung
JP2914442B2 (ja) 1997-06-25 1999-06-28 日本電気株式会社 符号多重化通信装置
US6031865A (en) * 1997-08-04 2000-02-29 Motorola, Inc. Rapidly decorrelating spreading sequences for DS-CDMA transceivers
JP3597023B2 (ja) * 1997-09-12 2004-12-02 富士通株式会社 Ｍ系列直交変調を用いた無線通信システムの基準位相の確定方法及びこれを用いた同期検波方法
JP2991170B2 (ja) 1997-10-01 1999-12-20 日本電気株式会社 Ｃｄｍａ受信装置および方法
US7184426B2 (en) * 2002-12-12 2007-02-27 Qualcomm, Incorporated Method and apparatus for burst pilot for a time division multiplex system
US9118387B2 (en) * 1997-11-03 2015-08-25 Qualcomm Incorporated Pilot reference transmission for a wireless communication system
US6574211B2 (en) * 1997-11-03 2003-06-03 Qualcomm Incorporated Method and apparatus for high rate packet data transmission
US6351498B1 (en) * 1997-11-20 2002-02-26 Ntt Mobile Communications Network Inc. Robust digital modulation and demodulation scheme for radio communications involving fading
US6167024A (en) * 1998-03-17 2000-12-26 Trw Inc. Multiple channel control using orthogonally modulated coded drive signals
JP3166705B2 (ja) * 1998-04-16 2001-05-14 松下電器産業株式会社 無線装置及び送信方法
KR100381012B1 (ko) 1998-05-04 2003-08-19 한국전자통신연구원 부호분할 다중접속 방식에서 상향 공통 채널의 임의 접속 장치및 방법
US6249518B1 (en) * 1998-08-07 2001-06-19 Nortel Networks Limited TDMA single antenna co-channel interference cancellation
US6470055B1 (en) * 1998-08-10 2002-10-22 Kamilo Feher Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems
US7079584B2 (en) * 1998-08-10 2006-07-18 Kamilo Feher OFDM, CDMA, spread spectrum, TDMA, cross-correlated and filtered modulation
US6487235B2 (en) 1998-08-24 2002-11-26 At&T Wireless Services, Inc. Delay compensation
EP0996234B1 (de) * 1998-10-23 2006-06-28 Sony Deutschland GmbH Empfängerarchitektur für ein Mehrfachverwürfelkode CDMA Übertragungsverfahren
JP3791818B2 (ja) * 1999-01-04 2006-06-28 株式会社日立コミュニケーションテクノロジー コールセンタの中継装置
KR20000056678A (ko) * 1999-02-25 2000-09-15 김동인 직교 다중부호 코드분할 다중접속 시스템을 위한 씨이엠 변조 및 제이디 복조방식
JP3601816B2 (ja) * 1999-05-31 2004-12-15 韓國電子通信研究院 移動通信システムにおける変調装置、端末器および変調方法
US6556549B1 (en) 1999-07-02 2003-04-29 Qualcomm Incorporated Method and apparatus for signal combining in a high data rate communication system
US8064409B1 (en) 1999-08-25 2011-11-22 Qualcomm Incorporated Method and apparatus using a multi-carrier forward link in a wireless communication system
US6621804B1 (en) 1999-10-07 2003-09-16 Qualcomm Incorporated Method and apparatus for predicting favored supplemental channel transmission slots using transmission power measurements of a fundamental channel
US6975666B2 (en) 1999-12-23 2005-12-13 Institut National De La Recherche Scientifique Interference suppression in CDMA systems
WO2002001759A1 (fr) * 2000-06-26 2002-01-03 Linkair Communications, Inc. Procede de mise en place de groupes de codes d'etalement de spectre orthogonaux
US6430214B1 (en) * 2000-05-22 2002-08-06 Motorola, Inc. Fading resistant multi-level QAM receiver
US6973098B1 (en) * 2000-10-25 2005-12-06 Qualcomm, Incorporated Method and apparatus for determining a data rate in a high rate packet data wireless communications system
US7068683B1 (en) 2000-10-25 2006-06-27 Qualcomm, Incorporated Method and apparatus for high rate packet data and low delay data transmissions
US6654408B1 (en) 2000-10-27 2003-11-25 Wisconsin Alumni Research Foundation Method and system for multi-carrier multiple access reception in the presence of imperfections
US6922389B1 (en) * 2000-11-15 2005-07-26 Qualcomm, Incorporated Method and apparatus for reducing transmission power in a high data rate system
WO2002061962A1 (en) * 2001-01-29 2002-08-08 The National University Of Singapore Communication system using a modulation method based on residue number systems
KR100469701B1 (ko) * 2001-03-10 2005-02-02 삼성전자주식회사 이동통신시스템에서 패킷 데이터 제어 채널 통신 장치 및방법
DE10361037A1 (de) * 2003-12-23 2005-07-28 Infineon Technologies Ag Verfahren und Vorrichtung zur Demodulation eines phasenmodulierten Signals
US8325591B2 (en) * 2004-02-26 2012-12-04 Qualcomm Incorporated Suppressing cross-polarization interference in an orthogonal communication link
CA2591273C (en) 2004-12-23 2012-05-08 Hee-Jung Yu Apparatus for transmitting and receiving data to provide high-speed data communication and method thereof
JP4701964B2 (ja) 2005-09-27 2011-06-15 日本電気株式会社 マルチユーザ受信装置
KR100727133B1 (ko) 2005-12-26 2007-06-13 주식회사 팬택 이동통신 단말기에서 잡음 및 간섭 마진을 확장한씨디엠에이 변조 장치
JP5153523B2 (ja) * 2008-09-01 2013-02-27 株式会社日立製作所 無線基地局装置および無線移動局装置
US8811200B2 (en) * 2009-09-22 2014-08-19 Qualcomm Incorporated Physical layer metrics to support adaptive station-dependent channel state information feedback rate in multi-user communication systems
US10673674B2 (en) 2017-07-12 2020-06-02 Qualcomm Incorporated Techniques and apparatuses for multiplexing schemes for millimeter wave downlink single carrier waveforms

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Publication number Priority date Publication date Assignee Title
FR2681199B1 (fr) * 1991-09-11 1993-12-03 Agence Spatiale Europeenne Procede et dispositif pour multiplexer des signaux de donnees.
ZA931077B (en) * 1992-03-05 1994-01-04 Qualcomm Inc Apparatus and method for reducing message collision between mobile stations simultaneously accessing a base station in a cdma cellular communications system
US5488629A (en) * 1993-02-17 1996-01-30 Matsushita Electric Industrial Co., Ltd. Signal processing circuit for spread spectrum communications
JP2689890B2 (ja) * 1993-12-30 1997-12-10 日本電気株式会社 スペクトラム拡散受信機
US5488631A (en) * 1994-10-31 1996-01-30 Radio Connect Corporation Wireless direct-sequence spread spectrum TDMA communications system

Also Published As

Publication number Publication date
DE69534497T2 (de) 2006-05-11
JP2655108B2 (ja) 1997-09-17
EP0717520A3 (de) 1998-09-09
EP0717520B1 (de) 2005-10-05
US5734647A (en) 1998-03-31
EP0717520A2 (de) 1996-06-19
JPH08163087A (ja) 1996-06-21

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