TW363310B - CDMA communication system and method using the same - Google Patents

CDMA communication system and method using the same

Info

Publication number
TW363310B
TW363310B TW086109271A TW86109271A TW363310B TW 363310 B TW363310 B TW 363310B TW 086109271 A TW086109271 A TW 086109271A TW 86109271 A TW86109271 A TW 86109271A TW 363310 B TW363310 B TW 363310B
Authority
TW
Taiwan
Prior art keywords
phase
terminal
signal
proceed
code
Prior art date
Application number
TW086109271A
Other languages
English (en)
Inventor
Masayuki Ariyoshi
Nobukazu Doi
Tesshin Shiga
Yoshito Ohta
Original Assignee
Hitachi Ltd
Hitachi Electronics
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 Hitachi Ltd, Hitachi Electronics filed Critical Hitachi Ltd
Application granted granted Critical
Publication of TW363310B publication Critical patent/TW363310B/zh

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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007—Open loop measurement
    • H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
    • H04W56/0085—Open loop measurement based on arrival time vs. expected arrival time detecting a given structure in the signal
    • 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
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0005—Synchronisation arrangements synchronizing of arrival of multiple uplinks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
TW086109271A 1996-07-09 1997-07-01 CDMA communication system and method using the same TW363310B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17893596A JPH1022874A (ja) 1996-07-09 1996-07-09 Ｃｄｍａ通信システムおよび通信方法

Publications (1)

Publication Number Publication Date
TW363310B true TW363310B (en) 1999-07-01

Family

ID=16057223

Family Applications (1)

Application Number Title Priority Date Filing Date
TW086109271A TW363310B (en) 1996-07-09 1997-07-01 CDMA communication system and method using the same

Country Status (8)

Country Link
US (5) US5930244A (zh)
EP (3) EP1503514B1 (zh)
JP (1) JPH1022874A (zh)
KR (2) KR100332281B1 (zh)
CN (1) CN1126308C (zh)
CA (1) CA2209457C (zh)
SG (1) SG77602A1 (zh)
TW (1) TW363310B (zh)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1022874A (ja) * 1996-07-09 1998-01-23 Hitachi Ltd Ｃｄｍａ通信システムおよび通信方法
JP2815007B2 (ja) * 1996-12-05 1998-10-27 日本電気株式会社 可変レートｃｄｍａ拡散回路
US5943331A (en) * 1997-02-28 1999-08-24 Interdigital Technology Corporation Orthogonal code synchronization system and method for spread spectrum CDMA communications
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
US5872774A (en) * 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
JPH11177522A (ja) * 1997-12-10 1999-07-02 Oki Electric Ind Co Ltd 無線通信装置及び移動体通信システム
US6859506B1 (en) * 2000-10-10 2005-02-22 Freescale Semiconductor, Inc. Ultra wideband communication system, method, and device with low noise reception
JPH11186987A (ja) * 1997-12-22 1999-07-09 Matsushita Electric Ind Co Ltd Ｃｄｍａ受信機位相追従装置
KR100272565B1 (ko) * 1998-06-16 2000-11-15 서평원 역방향 링크의 최적 직교 코드 할당 방법
KR20000009140A (ko) 1998-07-21 2000-02-15 윤종용 확산대역 통신시스템의 초기 포착 및 프레임동기 장치 및 방법
KR100269591B1 (ko) * 1998-07-23 2000-10-16 조정남 이동통신시스템에서의 역방향 동기 설정 방법 및 그를 이용한역방향 동기식 전송 방법
GB2341757B (en) * 1998-09-21 2003-07-02 Fujitsu Ltd Code-division multiple access mobile comunications networks
JP3930187B2 (ja) 1999-03-03 2007-06-13 株式会社日立コミュニケーションテクノロジー 同期制御方法、受信機、基地局及び移動端末
JP3477520B2 (ja) * 1999-04-21 2003-12-10 松下電器産業株式会社 移動体通信装置、通信システム、及び通信方法
JP2001156749A (ja) * 1999-09-17 2001-06-08 Hitachi Kokusai Electric Inc Ｃｄｍａ移動局装置
KR100490717B1 (ko) * 2000-03-28 2005-05-24 인터디지탈 테크날러지 코포레이션 전송 전에 사전 회전을 이용하는 코드 분할 다중 접속시스템
US6721896B1 (en) * 2000-03-31 2004-04-13 Alcatel System and method for converting a selected signal into a timing signal and inserting the phase of the timing signal into a framed signal
WO2002001742A1 (en) * 2000-06-24 2002-01-03 Samsung Electronics Co., Ltd Apparatus and method for synchronization of uplink synchronous transmission scheme in a cdma communication system
US8537656B2 (en) 2000-07-19 2013-09-17 Ipr Licensing, Inc. Method for compensating for multi-path of a CDMA reverse link utilizing an orthogonal channel structure
US7911993B2 (en) 2000-07-19 2011-03-22 Ipr Licensing, Inc. Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure
US7006428B2 (en) * 2000-07-19 2006-02-28 Ipr Licensing, Inc. Method for allowing multi-user orthogonal and non-orthogonal interoperability of code channels
JP4265864B2 (ja) * 2000-08-15 2009-05-20 富士通株式会社 同期追跡回路
KR20020030867A (ko) * 2000-10-18 2002-04-26 구자홍 기지국 안테나 다이버시티를 고려한 역방향 동기식 전송방법
US7209494B1 (en) * 2000-10-24 2007-04-24 L-3 Communications Corporation Digital reverse transmission frequency training method for time division duplex (TDD) communication system
US6917581B2 (en) 2001-07-17 2005-07-12 Ipr Licensing, Inc. Use of orthogonal or near orthogonal codes in reverse link
JP4119696B2 (ja) 2001-08-10 2008-07-16 松下電器産業株式会社 送信装置、受信装置及び無線通信方法
KR100777563B1 (ko) * 2001-12-31 2007-11-20 주식회사 케이티 빔조향 및 전파도래각 추정을 위한 기지국의 송/수신 장치
US7681214B2 (en) * 2002-02-20 2010-03-16 Broadcom Corporation Outer code covered synchronous code division multiple access for cable modem channels
US7830781B2 (en) * 2002-08-13 2010-11-09 Rockwell Collins, Inc. Waveform for virtually simultaneous transmission and multiple receptions system and method
TWI364920B (en) * 2002-11-20 2012-05-21 Ipr Licensing Inc Soft handoff of a cdma reverse link
JP3804618B2 (ja) * 2003-02-25 2006-08-02 ソニー株式会社 通信装置
JP3738766B2 (ja) * 2003-02-25 2006-01-25 ソニー株式会社 通信装置
JP2004274403A (ja) * 2003-03-07 2004-09-30 Sony Ericsson Mobilecommunications Japan Inc データ送信方法、データ受信方法、データ伝送方法、データ送信装置、データ受信装置及びデータ伝送システム
US7092426B2 (en) * 2003-09-24 2006-08-15 S5 Wireless, Inc. Matched filter for scalable spread spectrum communications systems
US6954447B2 (en) * 2003-11-07 2005-10-11 Interdigital Technology Corporation Method and apparatus for uplink synchronization in wireless communications
JP3847289B2 (ja) * 2003-11-10 2006-11-22 株式会社半導体理工学研究センター パルスベース通信システム
US7304977B2 (en) * 2004-02-17 2007-12-04 Texas Instruments Incorporated Implementation for a 5 sample guard interval for multi-band OFDM
US7257151B2 (en) * 2004-05-05 2007-08-14 Texas Instruments Incorporated (Updated) preamble for FDMA
US7970947B1 (en) 2005-03-10 2011-06-28 Rockwell Collins, Inc. Tactical targeting network technology small form factor user system
US7508887B1 (en) 2005-09-06 2009-03-24 Rockwell Collins, Inc. Signal acquisition with transmit blanking compensation
US7839900B1 (en) 2006-09-29 2010-11-23 Rockwell Collins, Inc. Method and architecture for TTNT symbol rate scaling modes
US7835427B1 (en) 2007-03-30 2010-11-16 Rockwell Collins, Inc. Multiplexed architecture for simultaneous transmission and reception
US8059563B2 (en) * 2008-07-31 2011-11-15 Aruba Networks, Inc. Assigning slots in a mesh network
CN104702311B (zh) * 2013-12-06 2017-08-11 清华大学 扩频信号的生成方法、生成装置、接收方法和接收装置
WO2018137138A1 (zh) * 2017-01-24 2018-08-02 华为技术有限公司 相位调整方法及装置

Family Cites Families (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4460992A (en) * 1982-11-04 1984-07-17 The United States Of America As Represented By The Secretary Of The Army Orthogonal CDMA system utilizing direct sequence pseudo noise codes
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5703874A (en) * 1990-12-05 1997-12-30 Interdigital Technology Corporation Broadband CDMA overlay system and method
US5506864A (en) * 1990-12-05 1996-04-09 Interdigital Technology Corporation CDMA communications and geolocation system and method
US5111478A (en) 1991-01-31 1992-05-05 Motorola, Inc. Method and apparatus for providing signal synchronization in a spread spectrum communication system
US5228053A (en) * 1991-05-15 1993-07-13 Interdigital Technology Corporation Spread spectrum cellular overlay CDMA communications system
US5235615A (en) * 1991-05-22 1993-08-10 Cylink Corporation Spread spectrum method
JPH0548570A (ja) 1991-08-07 1993-02-26 Mitsubishi Electric Corp スペクトル拡散信号同期回路
JP3029219B2 (ja) 1991-12-05 2000-04-04 東洋通信機株式会社 スペクトル拡散信号受信装置
JP3095508B2 (ja) 1992-02-05 2000-10-03 松下電器産業株式会社 スペクトラム拡散通信用復調装置
JP3001707B2 (ja) 1992-02-06 2000-01-24 松下電器産業株式会社 スペクトラム拡散通信装置
JPH05327655A (ja) 1992-05-26 1993-12-10 Japan Aviation Electron Ind Ltd スペクトル拡散信号受信装置の同期捕捉回路
US5526383A (en) * 1992-08-14 1996-06-11 Fujitsu Limited Network control system for controlling relative errors between network nodes
US5267260A (en) * 1992-11-19 1993-11-30 Samsung Electronics Co., Ltd. Spread spectrum receiver using the code division multiple access mode
JPH06252885A (ja) 1993-02-22 1994-09-09 Yamaha Corp スペクトラム拡散信号受信装置
FI96733C (fi) * 1993-06-18 1996-08-12 Nokia Telecommunications Oy Tilaajaverkkojärjestely tilaajien liittämiseksi yleiseen puhelinverkkoon
JPH07177126A (ja) 1993-12-20 1995-07-14 Canon Inc 多重通信装置
KR950022267A (ko) * 1993-12-30 1995-07-28 김광호 대역환산 통신시스템의 코드 추적회로 및 방법
JP3202125B2 (ja) * 1994-03-10 2001-08-27 沖電気工業株式会社 符号分割多元接続システム
JP2677191B2 (ja) * 1994-03-15 1997-11-17 日本電気株式会社 Ｃｄｍａ通信方式
JP2941649B2 (ja) 1994-04-26 1999-08-25 松下電器産業株式会社 疑似ランダム符号同期装置
KR100326312B1 (ko) * 1994-06-17 2002-06-22 윤종용 대역확산통신방식의동기식송신및수신장치
DE69534987T2 (de) * 1994-06-23 2006-09-21 Ntt Docomo Inc. CDMA Demodulationsschaltung und Demodulationsverfahren
US5499236A (en) * 1994-08-16 1996-03-12 Unisys Corporation Synchronous multipoint-to-point CDMA communication system
JPH0884132A (ja) 1994-09-09 1996-03-26 Canon Inc 符号分割多重通信装置
FR2728415B1 (fr) 1994-12-19 1997-01-24 Commissariat Energie Atomique Procede de transmission a modulation et demodulation differentielle de phase a etalement de spectre utilisant des sequences pseudoaleatoires orthogonales
US5691974A (en) * 1995-01-04 1997-11-25 Qualcomm Incorporated Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy
JPH08195703A (ja) * 1995-01-17 1996-07-30 Toshiba Corp 無線通信装置
JPH08288928A (ja) * 1995-04-14 1996-11-01 Toshiba Corp スペクトラム拡散通信装置
US5781541A (en) * 1995-05-03 1998-07-14 Bell Atlantic Network Services, Inc. CDMA system having time-distributed transmission paths for multipath reception
US5619492A (en) * 1995-06-16 1997-04-08 Unisys Corporation CDMA communication system in which bit rates are dynamically allocated
US6697350B2 (en) * 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US5764630A (en) * 1996-03-25 1998-06-09 Stanford Telecommunications, Inc. Forward link carrier recovery in an OCDMA spread spectrum communication system without a pilot tone
JPH09321662A (ja) * 1996-05-28 1997-12-12 Oki Electric Ind Co Ltd 移動体通信の送受信系の同期方式及びそのシステム
JPH1013918A (ja) * 1996-06-19 1998-01-16 Toshiba Corp 符号分割多元接続方式を採用した移動通信システムとその無線通信装置
JPH1022874A (ja) * 1996-07-09 1998-01-23 Hitachi Ltd Ｃｄｍａ通信システムおよび通信方法
US5781451A (en) 1997-01-21 1998-07-14 Xerox Corporation Method and apparatus for tracking the motion of an imaging member with a line writing device using a rational electronic gearbox
US6091703A (en) * 1997-10-10 2000-07-18 Trw Inc. Bulk despreading of multiple independent CDMA sources
US6101175A (en) * 1997-10-31 2000-08-08 Motorola, Inc. Method and apparatus for handoff within a communication system

Also Published As

Publication number Publication date
SG77602A1 (en) 2001-01-16
EP2296290A1 (en) 2011-03-16
EP0818892A2 (en) 1998-01-14
CN1175140A (zh) 1998-03-04
US20090245210A1 (en) 2009-10-01
US7916699B2 (en) 2011-03-29
KR980012985A (ko) 1998-04-30
CA2209457C (en) 2008-09-09
US6137786A (en) 2000-10-24
US5930244A (en) 1999-07-27
EP1503514A1 (en) 2005-02-02
US7545777B2 (en) 2009-06-09
CN1126308C (zh) 2003-10-29
JPH1022874A (ja) 1998-01-23
CA2209457A1 (en) 1998-01-09
EP1503514B1 (en) 2011-06-29
KR100393839B1 (ko) 2003-08-06
US6597676B1 (en) 2003-07-22
US20030214932A1 (en) 2003-11-20
EP0818892A3 (en) 2002-01-30
KR100332281B1 (ko) 2002-08-14

Similar Documents

Publication Publication Date Title
TW363310B (en) CDMA communication system and method using the same
EP0515675A4 (zh)
MXPA02001465A (es) Metodo de cancelacion de interferencia con base en una antena inteligente.
AU6743596A (en) Receiving method and receiver
EP0825737A4 (en) SIGNAL TRANSMISSION METHOD, TRANSMITTER, RECEIVER AND METHOD FOR SYNCHRONIZING A SPREADBAND CODE FOR MOBILE COMMUNICATION
GB2347330A (en) Method and apparatus for tracking a communication signal in a wireless communication system
EP0823796A3 (en) Multiuser receiving device for use in a CDMA communications system
TW340286B (en) Power presettng in a radio communication system
WO2001073965A3 (en) Apparatus, system and method in an impulse radio communications system
AU4115397A (en) Method and apparatus for directional radio communication
NO20083541L (no) Fremgangsmate og system for a stedfeste en mobilabonnent i et CDMA kommunikasjonssystem
HK1086121A1 (en) Synchronisation of the reverse link in a cdma communications system cdma
SE9500668D0 (sv) Signalbehandling i kommunikationssystem
MY122257A (en) Positioning system for digital telephone networks
EP0940926A3 (en) Spectrum spreading communication system using single spreading code
DK0701752T3 (da) En fremgangsmåde og et apparat til bestemmelse af signalbrugbarhed
WO1999065167A3 (en) Method and apparatus for identifying the source of a digital signal
MY121742A (en) A cellular positioning system that compensates for received signal delays in positioning radio receivers
NO20000840L (no) Adaptivt radiosystem
WO1999053628A3 (en) Data communication and radio system
EP0817403A3 (en) Digital mobile telephone which maintains synchronized operation with a cellular or mobile system
EP1207636A3 (en) Channel acquisition in a mobile system using CDMA-TDD and CDMA-FDD
TW200420159A (en) Method and mobile station for reporting multi-path signals based on minimum separation
GB0008689D0 (en) A method and system for processing signals
MY107588A (en) Apparatus for and methods transmitting a signal responsive to a received signal

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees