[go: up one dir, main page]

AR018001A1 - Obtener informacion sobre sincronizacion de puesta a tiempo y aparato procesar una senal de acceso multiple por division de codigo para obtener informacion de sincronizacion de puesta a tiempo - Google Patents

Obtener informacion sobre sincronizacion de puesta a tiempo y aparato procesar una senal de acceso multiple por division de codigo para obtener informacion de sincronizacion de puesta a tiempo

Info

Publication number
AR018001A1
AR018001A1 ARP980103039A ARP980103039A AR018001A1 AR 018001 A1 AR018001 A1 AR 018001A1 AR P980103039 A ARP980103039 A AR P980103039A AR P980103039 A ARP980103039 A AR P980103039A AR 018001 A1 AR018001 A1 AR 018001A1
Authority
AR
Argentina
Prior art keywords
synchronization
frame
timing synchronization
information
slots
Prior art date
Application number
ARP980103039A
Other languages
English (en)
Original Assignee
Ericsson Telefon Ab L M
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25383775&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AR018001(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of AR018001A1 publication Critical patent/AR018001A1/es

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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • 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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • H04B1/70735—Code identification
    • 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)

Abstract

Cada trama de una transmision en un sistema de comunicaciones de espectro ampliado se divide en multiples ranuras de sincronizacion. Cada una de lasranuras de sincronizacion incluye un codigo de piloto y, por lo menos una de las ranuras desincroniza cion, incluye además un codigo de sincronizacion detramas. Para extraer informacion sobre sincronizacion de trama y ranura en la transmision del canal de piloto, la puesta a tiempo del codigo de piloto seidentifica primero aplicando unfiltro coincid ente o correlacion a una senal de piloto recibida, identificando picos y usando los picos para hallar unareferencia de puesta a tiempo indicativa de los límites de ranuras de sincronizacion. A continuacion, el conjunto de codigos desincronizacion de tramasconocidos se correlacionan con la senal recibida a través de las ranuras de sincronizacion halladas incluidas. Dado que se conoce la localizacion dentro de latrama del (de los) codigo(s) de sincronizacion de tramas, una vezhallada una coincid encia de correlacion en una cierta localizacion de ranura, también seconoce el límite de la trama (es decir, la sincronizacion de la trama) relativa al (a los) mismo(s).
ARP980103039A 1997-06-27 1998-06-24 Obtener informacion sobre sincronizacion de puesta a tiempo y aparato procesar una senal de acceso multiple por division de codigo para obtener informacion de sincronizacion de puesta a tiempo AR018001A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/884,002 US5991330A (en) 1997-06-27 1997-06-27 Mobile Station synchronization within a spread spectrum communication systems

Publications (1)

Publication Number Publication Date
AR018001A1 true AR018001A1 (es) 2001-10-31

Family

ID=25383775

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980103039A AR018001A1 (es) 1997-06-27 1998-06-24 Obtener informacion sobre sincronizacion de puesta a tiempo y aparato procesar una senal de acceso multiple por division de codigo para obtener informacion de sincronizacion de puesta a tiempo

Country Status (15)

Country Link
US (1) US5991330A (es)
EP (1) EP0992122B1 (es)
JP (2) JP3408545B2 (es)
KR (1) KR100363668B1 (es)
CN (1) CN1123142C (es)
AR (1) AR018001A1 (es)
AU (1) AU737540B2 (es)
BR (2) BR9810325B1 (es)
CA (1) CA2293305C (es)
DE (1) DE69815105T2 (es)
MY (1) MY117414A (es)
RU (1) RU2202149C2 (es)
TW (1) TW387186B (es)
WO (1) WO1999000912A1 (es)
ZA (1) ZA984725B (es)

Families Citing this family (110)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09307951A (ja) * 1996-03-15 1997-11-28 Matsushita Electric Ind Co Ltd スペクトル拡散通信装置
US6765895B1 (en) 1996-03-15 2004-07-20 Matsushita Electric Industrial Co., Ltd. Spectrum spread communication system
JP3323443B2 (ja) 1997-07-17 2002-09-09 松下電器産業株式会社 無線通信端末装置及び無線通信基地局装置
US6185244B1 (en) 1997-08-29 2001-02-06 Telefonaktiebolaget Lm Ericsson Cell searching in a CDMA communications system
US5930366A (en) * 1997-08-29 1999-07-27 Telefonaktiebolaget L M Ericsson Synchronization to a base station and code acquisition within a spread spectrum communication system
KR100304924B1 (ko) * 1997-12-30 2001-11-22 서평원 코드분할다중접속셀룰러시스템의주파수간핸드오프제어방법
US6208632B1 (en) * 1998-01-29 2001-03-27 Sharp Laboratories Of America System and method for CDMA channel estimation
US6526039B1 (en) * 1998-02-12 2003-02-25 Telefonaktiebolaget Lm Ericsson Method and system for facilitating timing of base stations in an asynchronous CDMA mobile communications system
JP3484072B2 (ja) * 1998-04-14 2004-01-06 株式会社日立国際電気 逆拡散回路
US6526035B1 (en) * 1998-06-09 2003-02-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for identifying the source of a digital signal
KR20000009140A (ko) * 1998-07-21 2000-02-15 윤종용 확산대역 통신시스템의 초기 포착 및 프레임동기 장치 및 방법
DE19840232C1 (de) * 1998-09-03 1999-10-28 Siemens Ag Verfahren und Funk-Kommunikationssystem zur Synchronisation von Teilnehmerstationen
GB2342017B (en) 1998-09-24 2003-10-15 Nokia Mobile Phones Ltd Communication network
GB2342018B (en) * 1998-09-24 2003-11-05 Nokia Mobile Phones Ltd Communication network
US6625200B1 (en) * 1999-01-25 2003-09-23 Ericsson Inc. Multi-stage CDMA synchronization with parallel execution
US6618458B1 (en) * 1999-01-29 2003-09-09 Nec Corporation Method and apparatus for signal receiving synchronization
KR100287896B1 (ko) * 1999-02-06 2001-04-16 서평원 이동 통신 시스템에서 셀 탐색 방법
US6567482B1 (en) * 1999-03-05 2003-05-20 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for efficient synchronization in spread spectrum communications
DE19911480C2 (de) * 1999-03-15 2003-06-18 Siemens Ag Verfahren zur Synchronisation von Basisstationen eines Funk-Kommunikationssystems
US7496132B2 (en) 1999-03-15 2009-02-24 Kg Electronics Inc. Pilot signals for synchronization and/or channel estimation
KR100294711B1 (ko) * 1999-03-15 2001-07-12 서평원 최적의 파일럿 심볼을 이용한 프레임 동기 방법
US7643540B2 (en) 1999-03-15 2010-01-05 Lg Electronics Inc. Pilot signals for synchronization and/or channel estimation
DE19912856A1 (de) * 1999-03-22 2000-10-19 Siemens Ag Verfahren und Funk-Kommunikationssystem zur Synchronisation von Teilnehmerstationen
DE19917337C2 (de) * 1999-04-16 2002-02-28 Infineon Technologies Ag Verfahren und Einrichtung zum Synchronisieren eines Mobilfunkempfängers mit einer Rahmenstruktur eines Funksignals
KR100290678B1 (ko) 1999-04-24 2001-05-15 윤종용 씨디엠에이 이동통신시스템의 셀탐색 장치 및 방법
GB2350018B (en) * 1999-05-08 2003-07-30 Motorola Ltd A method of and apparatus for estimating a characteristic of a signal
KR100605977B1 (ko) * 1999-06-15 2006-07-28 삼성전자주식회사 부호분할다중접속 통신시스템의 이동국의 셀 탐색장치 및 방법
US6363060B1 (en) * 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
KR100830390B1 (ko) * 1999-06-30 2008-05-20 퀄컴 인코포레이티드 고속 ｗｃｄｍａ 획득 방법 및 장치
CN1132391C (zh) * 1999-08-09 2003-12-24 华为技术有限公司 一种实现移动通信系统的导频同步信道的方法
US6868075B1 (en) 1999-09-28 2005-03-15 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compressed mode communications over a radio interface
DE19956492A1 (de) * 1999-11-24 2001-05-31 Siemens Ag Verfahren zum Abbilden von Formatkennungs-Bits auf einen in einem Komprimiermodus zu sendenden Rahmen
US6760366B1 (en) * 1999-11-29 2004-07-06 Qualcomm Incorporated Method and apparatus for pilot search using a matched filter
KR100720570B1 (ko) 2000-02-16 2007-05-22 엘지전자 주식회사 이동 통신 시스템에서의 프레임 동기 방법 및 압축 모드 지원 방법
EP1126637B8 (en) * 2000-02-16 2012-02-08 LG Electronics Inc. Method for synchronizing frame by using pilot pattern in compressed mode
GB2360426B (en) * 2000-03-14 2004-06-02 Nec Technologies Method for acquisition of slot timing in a direct sequence spread spectrum communication receiver
US6961398B2 (en) 2000-04-07 2005-11-01 Interdigital Technology Corp. Base station synchronization for wireless communication systems
WO2002011317A1 (en) * 2000-06-20 2002-02-07 Linkair Communications, Inc. A tdd framing method for physical layer of a wireless system
KR100373338B1 (ko) 2000-06-24 2003-02-25 주식회사 팬택앤큐리텔 부호분할 다중접속 코드 타이밍 추적장치
CN1249935C (zh) 2000-08-04 2006-04-05 交互数字技术公司 周期性小区搜索
WO2002032029A1 (en) * 2000-10-06 2002-04-18 Yozan Inc. Receiver
TW490981B (en) * 2000-10-30 2002-06-11 Ind Tech Res Inst Method and device for code group identification and frame boundary synchronization
US20020086639A1 (en) * 2000-12-28 2002-07-04 Siemens Information And Communication Products, Inc. Air interface frame structure for environments with bursted interference
KR100383059B1 (ko) * 2001-01-10 2003-05-09 주식회사 카서 동기과정을 단순화한 cdma 변복조 방식
US6826244B2 (en) 2001-02-27 2004-11-30 Interdigital Technology Corporation Initial cell search algorithm for 3G FDD wireless communication systems
US8249187B2 (en) * 2002-05-09 2012-08-21 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
BR0210131A (pt) * 2001-05-31 2004-06-08 Magnolia Broadband Inc Dispositivo de comunicação com antena inteligente usando um sinal de indicação de qualidade
ATE495618T1 (de) * 2001-06-12 2011-01-15 Ericsson Telefon Ab L M Synchronisation in einem terrestrischen umts- funkzugriffsnetzwerk (utran)
US6744747B2 (en) * 2001-08-22 2004-06-01 Qualcomm, Incorporated Method & apparatus for W-CDMA handoff searching
US6768768B2 (en) * 2001-09-19 2004-07-27 Qualcomm Incorporated Method and apparatus for step two W-CDMA searching
JP3974581B2 (ja) 2001-11-29 2007-09-12 インターデイジタル テクノロジー コーポレーション セルサーチ中に一次同期コードと二次同期コードを使用するシステム、および、方法
US7133437B2 (en) * 2002-01-31 2006-11-07 Qualcomm Incorporated Pilot interpolation for a gated pilot with compensation for induced phase changes
US7813311B2 (en) 2002-02-05 2010-10-12 Interdigital Technology Corporation Method and apparatus for synchronizing base stations
FI116179B (fi) * 2002-03-13 2005-09-30 Nokia Corp Menetelmä ja järjestelmä etenemisviiveen määrittämiseksi sekä elektroniikkalaite
US6996189B1 (en) * 2002-07-26 2006-02-07 Jabil Circuit, Inc. Symmetric spherical QAM constellation
US7042857B2 (en) 2002-10-29 2006-05-09 Qualcom, Incorporated Uplink pilot and signaling transmission in wireless communication systems
US7505741B2 (en) * 2002-11-01 2009-03-17 Magnolia Broadband Inc. Processing diversity signals using a delay
US7061966B2 (en) * 2003-02-27 2006-06-13 Motorola, Inc. Frame synchronization and scrambling code indentification in wireless communications systems and methods therefor
CN100544240C (zh) * 2003-04-01 2009-09-23 北京邮电大学 用于多载波码分多址系统的时间同步方法
US7418067B1 (en) 2003-04-14 2008-08-26 Magnolia Broadband Inc. Processing diversity signals at a mobile device using phase adjustments
JP4253703B2 (ja) * 2003-09-30 2009-04-15 Ｏｋｉセミコンダクタ株式会社 受信装置
US7430430B2 (en) * 2003-12-16 2008-09-30 Magnolia Broadband Inc. Adjusting a signal at a diversity system
US7272359B2 (en) * 2004-01-26 2007-09-18 Magnolia Broadband Inc. Communicating signals according to a quality indicator using multiple antenna elements
US7492828B2 (en) * 2004-06-18 2009-02-17 Qualcomm Incorporated Time synchronization using spectral estimation in a communication system
US7558591B2 (en) * 2004-10-12 2009-07-07 Magnolia Broadband Inc. Determining a power control group boundary of a power control group
US7515877B2 (en) * 2004-11-04 2009-04-07 Magnolia Broadband Inc. Communicating signals according to a quality indicator and a time boundary indicator
US8831115B2 (en) 2004-12-22 2014-09-09 Qualcomm Incorporated MC-CDMA multiplexing in an orthogonal uplink
US20060267983A1 (en) * 2005-05-24 2006-11-30 Magnolia Broadband Inc. Modifying a signal by adjusting the phase and amplitude of the signal
US7616930B2 (en) * 2005-05-24 2009-11-10 Magnolia Broadband Inc. Determining a phase adjustment in accordance with power trends
CN100377519C (zh) * 2005-06-17 2008-03-26 凯明信息科技股份有限公司 码分多址移动通信系统中用于初始同步的相关方法
US7783267B1 (en) 2005-06-23 2010-08-24 Magnolia Broadband Inc. Modifying a signal in response to quality indicator availability
EP1906571A1 (en) * 2005-08-19 2008-04-02 Matsushita Electric Industrial Co., Ltd. Base station device and mobile station device
US20090147757A1 (en) * 2005-08-22 2009-06-11 Matsushita Electric Industrial Co., Ltd. Base station device and mobile station device
US7633905B1 (en) 2005-09-02 2009-12-15 Magnolia Broadband Inc. Calibrating a transmit diversity communication device
US7835702B1 (en) 2005-09-15 2010-11-16 Magnolia Broadband Inc. Calculating a diversity parameter adjustment according to previously applied diversity parameter adjustments
US7746946B2 (en) * 2005-10-10 2010-06-29 Magnolia Broadband Inc. Performing a scan of diversity parameter differences
US7630445B1 (en) 2005-10-25 2009-12-08 Magnolia Broadband Inc. Establishing slot boundaries of slots of a diversity control feedback signal
US7796717B2 (en) * 2005-11-02 2010-09-14 Magnolia Brandband Inc. Modifying a signal according to a diversity parameter adjustment
US7965987B2 (en) * 2005-11-03 2011-06-21 Magnolia Broadband Inc. Amplifying a transmit signal using a fractional power amplifier
KR101037829B1 (ko) * 2006-04-25 2011-05-31 닛본 덴끼 가부시끼가이샤 파일럿 신호 전송 방법 및 무선 통신 장치
JP4745168B2 (ja) * 2006-08-22 2011-08-10 株式会社エヌ・ティ・ティ・ドコモ 基地局
US8665799B2 (en) 2006-09-14 2014-03-04 Qualcomm Incorporated Beacon assisted cell search in a wireless communication system
UA94482C2 (ru) * 2006-10-03 2011-05-10 Квелкомм Інкорпорейтед Передача синхронизации в системе беспроводной связи
US7949069B2 (en) * 2006-10-26 2011-05-24 Magnolia Broadband Inc. Method, system and apparatus for applying hybrid ARQ to the control of transmit diversity
US8150441B2 (en) * 2006-11-06 2012-04-03 Magnolia Broadband Inc. Modifying a signal by controlling transmit diversity parameters
US8199735B2 (en) * 2006-12-12 2012-06-12 Google Inc. Method, system and apparatus for the control of transmit diversity
US7663545B2 (en) * 2006-12-26 2010-02-16 Magnolia Broadband Inc. Method, system and apparatus for determining antenna weighting for transmit diversity
US8027374B2 (en) * 2006-12-27 2011-09-27 Magnolia Broadband Inc. Method, system and apparatus for transmit diversity control
US20080160990A1 (en) * 2006-12-29 2008-07-03 Yair Karmi System, method and apparatus for identification of power control using reverse rate indication
US7869535B2 (en) * 2007-02-28 2011-01-11 Magnolia Broadband Inc. Method, system and apparatus for phase control of transmit diversity signals
US20080227414A1 (en) 2007-03-01 2008-09-18 Yair Karmi System, method and apparatus for transmit diversity control based on variations in propagation path
US7991365B2 (en) * 2007-03-01 2011-08-02 Magnolia Broadband Inc. Method, system and apparatus for estimation of propagation path variability of a transmit diversity channel
US8032091B2 (en) * 2007-03-14 2011-10-04 Magnolia Broadband Inc. Method, apparatus and system for providing transmit diversity feedback during soft handoff
US8699968B2 (en) 2007-03-14 2014-04-15 Google Inc. Using multiple and a single feedback for UE uplink beamforming in soft handoff
US8750811B2 (en) * 2007-03-14 2014-06-10 Google Inc. Method, apparatus and system for phase difference adjustment in transmit diversity
WO2008113022A1 (en) * 2007-03-14 2008-09-18 Magnolia Broadband Inc. Method, apparatus and system for providing transmit diversity feedback
US8014734B2 (en) * 2007-03-15 2011-09-06 Magnolia Broadband Inc. Method, apparatus and system for controlling a transmit diversity device
US8046017B2 (en) * 2007-03-15 2011-10-25 Magnolia Broadband Inc. Method and apparatus for random access channel probe initialization using transmit diversity
US8036603B2 (en) 2007-03-15 2011-10-11 Magnolia Broadband Inc. Method, apparatus and system for providing feedback to a transmit diversity device
US8032092B2 (en) * 2007-12-06 2011-10-04 Magnolia Broadband Inc. System, apparatus and method for introducing antenna pattern variability
US8891557B2 (en) * 2008-05-21 2014-11-18 Qualcomm Incorporated Method and apparatus for sending information via selection of resources used for transmission
JP5172609B2 (ja) * 2008-10-31 2013-03-27 株式会社東芝 無線通信装置、無線端末及び無線通信方法
US8442457B2 (en) * 2009-09-08 2013-05-14 Google Inc. System and method for adaptive beamforming for specific absorption rate control
US8958757B2 (en) 2010-05-10 2015-02-17 Google Inc. System, method and apparatus for mobile transmit diversity using symmetric phase difference
EP2578042B1 (en) 2010-05-26 2015-07-08 Google, Inc. Method for random access channel probe initialization using transmit diversity
US9048913B2 (en) 2010-07-06 2015-06-02 Google Inc. Method and apparatus for adaptive control of transmit diversity to provide operating power reduction
US8849222B2 (en) 2011-02-16 2014-09-30 Google Inc. Method and device for phase adjustment based on closed-loop diversity feedback
JP2018520313A (ja) 2015-06-12 2018-07-26 スリーエム イノベイティブ プロパティズ カンパニー 浮力モジュール
US10348438B2 (en) * 2017-09-04 2019-07-09 Huawei Technologies Co., Ltd. Spur removal in pilot-tone OPM
RU2703509C1 (ru) * 2018-10-24 2019-10-18 Федеральное государственное автономное образовательное учреждение высшего образования "Национальный исследовательский университет "Московский институт электронной техники" Способ синхронизации в системах с прямым расширением спектра

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943974A (en) * 1988-10-21 1990-07-24 Geostar Corporation Detection of burst signal transmissions
US5103459B1 (en) * 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
RU2014738C1 (ru) * 1991-02-18 1994-06-15 Военная академия связи Способ передачи и приема информации с кодовым уплотнением сигналов
US5260967A (en) * 1992-01-13 1993-11-09 Interdigital Technology Corporation CDMA/TDMA spread-spectrum communications system and method
GB9201879D0 (en) * 1992-01-29 1992-03-18 Millicom Holdings Uk Ltd Communication system
US5603081A (en) * 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
JP3003839B2 (ja) * 1993-11-08 2000-01-31 エヌ・ティ・ティ移動通信網株式会社 Ｃｄｍａ通信方法および装置
JP3158821B2 (ja) * 1993-12-14 2001-04-23 株式会社日立製作所 Ｃｄｍａ移動通信システムおよび装置
JP3140317B2 (ja) * 1995-02-16 2001-03-05 株式会社日立国際電気 パイロット信号伝送方式
JP3372135B2 (ja) * 1995-05-24 2003-01-27 ソニー株式会社 通信端末装置
KR100212307B1 (ko) * 1995-06-13 1999-08-02 다치카와 게이지 확산부호의 동기획득 방법 및 시스템
US5805583A (en) * 1995-08-25 1998-09-08 Terayon Communication Systems Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access
US5793757A (en) * 1996-02-13 1998-08-11 Telefonaktiebolaget L M Ericsson (Publ) Telecommunication network having time orthogonal wideband and narrowband sytems
JPH1051354A (ja) * 1996-05-30 1998-02-20 N T T Ido Tsushinmo Kk Ｄｓ−ｃｄｍａ伝送方法
US5930366A (en) 1997-08-29 1999-07-27 Telefonaktiebolaget L M Ericsson Synchronization to a base station and code acquisition within a spread spectrum communication system
US6185244B1 (en) 1997-08-29 2001-02-06 Telefonaktiebolaget Lm Ericsson Cell searching in a CDMA communications system

Also Published As

Publication number Publication date
MY117414A (en) 2004-06-30
DE69815105T2 (de) 2004-04-01
JP2003037580A (ja) 2003-02-07
CA2293305A1 (en) 1999-01-07
BR9810325B1 (pt) 2013-09-17
JP2001508983A (ja) 2001-07-03
CN1123142C (zh) 2003-10-01
AU737540B2 (en) 2001-08-23
JP3408545B2 (ja) 2003-05-19
AU7947698A (en) 1999-01-19
EP0992122A1 (en) 2000-04-12
RU2202149C2 (ru) 2003-04-10
KR20010014261A (ko) 2001-02-26
JP3472773B2 (ja) 2003-12-02
DE69815105D1 (de) 2003-07-03
ZA984725B (en) 1999-12-02
WO1999000912A1 (en) 1999-01-07
TW387186B (en) 2000-04-11
CN1261479A (zh) 2000-07-26
KR100363668B1 (ko) 2002-12-16
EP0992122B1 (en) 2003-05-28
BR9816367B1 (pt) 2013-08-06
US5991330A (en) 1999-11-23
CA2293305C (en) 2009-02-03
BR9810325A (pt) 2000-09-05

Similar Documents

Publication Publication Date Title
AR018001A1 (es) Obtener informacion sobre sincronizacion de puesta a tiempo y aparato procesar una senal de acceso multiple por division de codigo para obtener informacion de sincronizacion de puesta a tiempo
ZA955939B (en) Method and apparatus for performing search acquisition in a CDMA communications system
AR033339A2 (es) Un aparato de sincronizacion rapida para ser utilizado en un sistema de comunicacion de banda ancha
MX9603336A (es) Red de area local inalambrica de alto indice de datos.
AR013951A1 (es) Formato para transmision de codigos de sincronizacion de enlace descendente de acceso multiple por division de codigos y sistema de comunicaciones utilizando dicho formato
BR9508348A (pt) Sistema para cancelar interferência de múltiplo acesso por divisão de código com propagação de espectros e processo para reduzir a interferência em um receptor de múltiplo acesso por divisão de código
AR013952A1 (es) Transmisor de espectro esparcido de secuencia directa y metodo
CY1106333T1 (el) Συσκευη και μεθοδος εκχωρησης καναλιου για κοινο καναλι πακετων σε ενα συστημα κινητης επικοινωνιας wcdma
DE69131866D1 (de) Spreizspektrumkorrelator
ATE450084T1 (de) Mehrlagige pn-kodespreizung in einem mehrbenutzerkommunikationssystem
SE9702891D0 (sv) Spread spectrum communication system
FI971423A0 (fi) Signallokalisering i ett multikommunikaitiomssystem
BRPI0408073A (pt) sistemas e métodos para utilizar espaço de código em rede de comunicações de espalhamento espectral
BR0006898A (pt) Aparelho e processo para gerar código decruzamento de sinais em sistema de comunicaçãomóvel umts
EP0593289A3 (en) Frequency hopping spread spectrum data transmission system.
BR0007446A (pt) Filtro casado de aquisição sequêncial, multibanda, multicanal
AR016313A1 (es) Transmisor que tiene una rama en fase (i) y una rama en cuadratura (q) para transmitir una senal de espectro de expansion, incluyendo por lo menos doscanales fisicos y metodo para asignar los codigos de expansion a una pluralidad de canales fisicos a ser transmitidos por dicho transmisor
EP0796532A4 (en) Ocdma code tracking system having phantom carrier signal
SE9700212D0 (sv) Amethod and an arrangement in a communication system
BR9906527A (pt) dispostivo, e, processo de detecção de ruìdo não ortogonal para um sistema de comunicação de acesso múltiplo por divisão de código (cdma)
DE69838557D1 (de) Gerät und Verfahren zur Teilung eines Zugriffskanalintervalls
KR100260457B1 (ko) 엠진 도약 코드를 이용하는 기지국 비동기 방법 및 초기 동기획득 방법
Aljunid et al. Performance of OCDMA systems using AND subtraction technique
EP1436906B1 (en) Ray classification
TH21405B (th) การซิงโครไนซ์สถานีเคลื่อนที่ภายในระบบการสื่อสารสเปกตรัมแผ่

Legal Events

Date Code Title Description
FG Grant, registration