ATE295031T1 - Trägerrückgewinnung der vorwärtsverbindung in einem ocdma spreizband-kommunikationssystem ohne pilotton - Google Patents

Trägerrückgewinnung der vorwärtsverbindung in einem ocdma spreizband-kommunikationssystem ohne pilotton

Info

Publication number
ATE295031T1
ATE295031T1 AT97916811T AT97916811T ATE295031T1 AT E295031 T1 ATE295031 T1 AT E295031T1 AT 97916811 T AT97916811 T AT 97916811T AT 97916811 T AT97916811 T AT 97916811T AT E295031 T1 ATE295031 T1 AT E295031T1
Authority
AT
Austria
Prior art keywords
signal
base station
spread
ocdma
communications system
Prior art date
Application number
AT97916811T
Other languages
English (en)
Inventor
Francis D Natali
John Ohlson
Original Assignee
Alcatel Usa Sourcing Lp
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 Alcatel Usa Sourcing Lp filed Critical Alcatel Usa Sourcing Lp
Application granted granted Critical
Publication of ATE295031T1 publication Critical patent/ATE295031T1/de

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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Intermediate Stations On Conveyors (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Circuits Of Receivers In General (AREA)
AT97916811T 1996-03-25 1997-03-24 Trägerrückgewinnung der vorwärtsverbindung in einem ocdma spreizband-kommunikationssystem ohne pilotton ATE295031T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/621,361 US5764630A (en) 1996-03-25 1996-03-25 Forward link carrier recovery in an OCDMA spread spectrum communication system without a pilot tone
PCT/US1997/004281 WO1997036396A1 (en) 1996-03-25 1997-03-24 Forward link carrier recovery in an ocdma spread spectrum communication system without a pilot tone

Publications (1)

Publication Number Publication Date
ATE295031T1 true ATE295031T1 (de) 2005-05-15

Family

ID=24489848

Family Applications (1)

Application Number Title Priority Date Filing Date
AT97916811T ATE295031T1 (de) 1996-03-25 1997-03-24 Trägerrückgewinnung der vorwärtsverbindung in einem ocdma spreizband-kommunikationssystem ohne pilotton

Country Status (6)

Country Link
US (1) US5764630A (de)
EP (1) EP0878077B1 (de)
AT (1) ATE295031T1 (de)
BR (1) BR9708147A (de)
DE (1) DE69733195T2 (de)
WO (1) WO1997036396A1 (de)

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Publication number Priority date Publication date Assignee Title
US6330291B1 (en) * 1996-03-29 2001-12-11 Qualcomm Inc. Frequency tracking for communication signals using M-ary orthogonal walsh modulation
JPH1022874A (ja) * 1996-07-09 1998-01-23 Hitachi Ltd Ｃｄｍａ通信システムおよび通信方法
GB2315647B (en) * 1996-07-23 2001-02-21 Roke Manor Research Randomised code acquisition
US6222828B1 (en) * 1996-10-30 2001-04-24 Trw, Inc. Orthogonal code division multiple access waveform format for use in satellite based cellular telecommunications
GB2320660A (en) * 1996-12-20 1998-06-24 Dsc Telecom Lp Processing data transmitted and received over a wireless link connecting a central terminal and a subscriber terminal of a wireless telecommunication system
JP2861985B2 (ja) * 1997-06-16 1999-02-24 日本電気株式会社 Ｃｄｍａ用高速セルサーチ方式
US6055230A (en) * 1997-09-05 2000-04-25 Metawave Communications Corporation Embedded digital beam switching
US6317412B1 (en) * 1997-12-12 2001-11-13 Stanford Telecommunications, Inc. Increased capacity in an OCDMA system for frequency isolation
US6075781A (en) * 1997-12-12 2000-06-13 Stanford Telecommunications, Inc. Flux density reduction in OCDMA satellite communication system
US6205167B1 (en) * 1997-12-23 2001-03-20 Philips Electronics North America Corporation Apparatus and method for code tracking in an IS-95 spread spectrum communications system
US6512755B1 (en) 1997-12-29 2003-01-28 Alcatel Usa Sourcing, L.P. Wireless telecommunications access system
US6570844B1 (en) 1997-12-29 2003-05-27 Alcatel Usa Sourcing, L.P. System and method for providing redundancy in a telecommunications system
US6603801B1 (en) 1998-01-16 2003-08-05 Intersil Americas Inc. Spread spectrum transceiver for use in wireless local area network and having multipath mitigation
US6678310B1 (en) * 1998-01-16 2004-01-13 Intersil Americas Inc Wireless local area network spread spectrum transceiver with multipath mitigation
WO2000013334A1 (en) * 1998-08-28 2000-03-09 Siemens Aktiengesellschaft Receiver and method of recovering data from radio signals
US6980531B1 (en) 1998-12-02 2005-12-27 At&T Corp. Multiple access spread spectrum switching methodology
US6301311B1 (en) * 1999-02-10 2001-10-09 Anritsu Company Non-coherent, non-data-aided pseudo-noise synchronization and carrier synchronization for QPSK or OQPSK modulated CDMA system
CN100521589C (zh) * 1999-04-29 2009-07-29 西门子公司 使基站与移动台同步的方法，基站以及移动台
DE19928019B4 (de) * 1999-06-18 2004-02-19 Alcatel Empfangseinrichtung für ein synchrones Mehrpunkt-zu-Punkt CDMA Netzwerk
CA2276971A1 (en) * 1999-07-06 2001-01-06 Wen Tong Preamble using golay sequence for access channel in cellular communications systems
ES2274763T3 (es) * 1999-09-16 2007-06-01 Koninklijke Philips Electronics N.V. Red con varios nudos de red y al menos un nudo en estrella.
US6628735B1 (en) 1999-12-22 2003-09-30 Thomson Licensing S.A. Correction of a sampling frequency offset in an orthogonal frequency division multiplexing system
US6963602B1 (en) 2000-01-05 2005-11-08 Advanced Micro Devices, Inc. Digital correction method and system
US7173921B1 (en) 2000-10-11 2007-02-06 Aperto Networks, Inc. Protocol for allocating upstream slots over a link in a point-to-multipoint communication system
CN1140075C (zh) * 2000-12-18 2004-02-25 信息产业部电信传输研究所 基于多径能量窗的码分多址系统初始同步与小区搜索装置
CN1120591C (zh) * 2000-12-18 2003-09-03 信息产业部电信传输研究所 直接扩频/码分多址综合扩频相干接收装置
US7289460B1 (en) * 2002-06-14 2007-10-30 Lockheed Martin Corporation Satellite communications system
CN1306808C (zh) * 2003-02-14 2007-03-21 上海交通大学 数字地面广播传输中系统信息的扩展频谱传输方法
CN100393171C (zh) * 2005-05-10 2008-06-04 上海贝尔三星移动通信有限公司 一种码分多址移动通信系统中提高接通率的方法和设备
CN101606367B (zh) * 2007-02-09 2012-12-05 Nxp股份有限公司 使多载波系统同步的方法和多载波系统
EP2280491B1 (de) * 2009-07-31 2012-07-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Vorrichtung und Verfahren zur Schätzung einer Frequenzverschiebung und einer Zeitverschiebung
US8913566B1 (en) 2010-04-12 2014-12-16 Sprint Spectrum L.P. Using traffic channels to extend wireless coverage in poor pilot-signal conditions
US8576736B1 (en) 2010-11-10 2013-11-05 Sprint Spectrum L.P. Method and system for spread spectrum signal acquisition without a pilot signal

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US5579338A (en) * 1992-06-29 1996-11-26 Mitsubishi Denki Kabushiki Kaisha Spread spectrum receiver using partial correlations
US5414728A (en) * 1993-11-01 1995-05-09 Qualcomm Incorporated Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels
US5566164A (en) * 1994-12-19 1996-10-15 Stanford Telecommunications, Inc. Practical means for digital generation and combination of a multiplicity of CDMA/FDMA signals

Also Published As

Publication number Publication date
DE69733195T2 (de) 2006-02-16
EP0878077A1 (de) 1998-11-18
BR9708147A (pt) 1999-07-27
WO1997036396A1 (en) 1997-10-02
EP0878077A4 (de) 1999-05-19
US5764630A (en) 1998-06-09
AU713299B2 (en) 1999-11-25
DE69733195D1 (de) 2005-06-09
EP0878077B1 (de) 2005-05-04
AU2533197A (en) 1997-10-17

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