[go: up one dir, main page]

DE60041806D1 - Verfahren zum behandeln von cdma signalkomponenten - Google Patents

Verfahren zum behandeln von cdma signalkomponenten

Info

Publication number
DE60041806D1
DE60041806D1 DE60041806T DE60041806T DE60041806D1 DE 60041806 D1 DE60041806 D1 DE 60041806D1 DE 60041806 T DE60041806 T DE 60041806T DE 60041806 T DE60041806 T DE 60041806T DE 60041806 D1 DE60041806 D1 DE 60041806D1
Authority
DE
Germany
Prior art keywords
deviation
matched filter
impulse response
treating
signal components
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
DE60041806T
Other languages
English (en)
Inventor
Jaakko Vihriaelae
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.)
Nokia Inc
Original Assignee
Nokia Inc
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 Nokia Inc filed Critical Nokia Inc
Application granted granted Critical
Publication of DE60041806D1 publication Critical patent/DE60041806D1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04B1/7097—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
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Noise Elimination (AREA)
  • Amplifiers (AREA)
  • Photoreceptors In Electrophotography (AREA)
DE60041806T 1999-09-02 2000-09-01 Verfahren zum behandeln von cdma signalkomponenten Expired - Lifetime DE60041806D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI991871A FI19991871A (fi) 1999-09-02 1999-09-02 Menetelmä signaalikomponenttien käsittelemiseksi kommunikaatiojärjestelmässä ja vastanotin
PCT/FI2000/000739 WO2001018985A1 (en) 1999-09-02 2000-09-01 Method of processing cdma signal components

Publications (1)

Publication Number Publication Date
DE60041806D1 true DE60041806D1 (de) 2009-04-30

Family

ID=8555236

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60041806T Expired - Lifetime DE60041806D1 (de) 1999-09-02 2000-09-01 Verfahren zum behandeln von cdma signalkomponenten

Country Status (10)

Country Link
US (1) US7016397B1 (de)
EP (1) EP1127417B1 (de)
JP (1) JP4681180B2 (de)
CN (1) CN1154250C (de)
AT (1) ATE426272T1 (de)
AU (1) AU7002200A (de)
DE (1) DE60041806D1 (de)
FI (1) FI19991871A (de)
NO (1) NO20012134D0 (de)
WO (1) WO2001018985A1 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3031354B1 (ja) * 1998-09-30 2000-04-10 日本電気株式会社 Ｃｄｍａ受信装置及びそのマルチパスのフィンガ割り当て方法並びにその制御プログラムを記録した記録媒体
US7012952B2 (en) * 2001-08-01 2006-03-14 Qualcomm Incorporated Method and apparatus for adjusting delay in systems with time-burst pilot and fractionally spaced equalizers
JP3581357B2 (ja) * 2002-05-22 2004-10-27 松下電器産業株式会社 通信端末装置及び拡散コード推定方法
JP3637333B2 (ja) * 2002-07-05 2005-04-13 株式会社東芝 スペクトラム拡散通信装置およびその制御方法
KR20040074789A (ko) * 2003-02-19 2004-08-26 삼성전자주식회사 백라이트 어셈블리 및 이를 갖는 액정표시장치
JP4193589B2 (ja) * 2003-05-28 2008-12-10 日本電気株式会社 携帯通信端末及びそのアンテナ切替方法
US20050063298A1 (en) * 2003-09-02 2005-03-24 Qualcomm Incorporated Synchronization in a broadcast OFDM system using time division multiplexed pilots
CN1310549C (zh) * 2003-10-28 2007-04-11 华为技术有限公司 一种多径统计建模的方法
ATE413740T1 (de) * 2003-12-26 2008-11-15 Zte Corp Mehrweggesuchverfahren eines codemultiplex- mehrfachzugriffsystem
US7362792B2 (en) 2004-01-12 2008-04-22 Telefonaktiebolaget Lm Ericsson (Publ) Method of and apparatus for computation of unbiased power delay profile
US6917904B1 (en) 2004-01-12 2005-07-12 Telefonaktiebolaget L M Ericsson (Publ) Method of and apparatus for path-searcher window positioning
US20050163263A1 (en) * 2004-01-28 2005-07-28 Gupta Alok K. Systems and methods for frequency acquisition in a wireless communication network
US8724447B2 (en) * 2004-01-28 2014-05-13 Qualcomm Incorporated Timing estimation in an OFDM receiver
US8433005B2 (en) * 2004-01-28 2013-04-30 Qualcomm Incorporated Frame synchronization and initial symbol timing acquisition system and method
JP4744965B2 (ja) * 2004-08-09 2011-08-10 パナソニック株式会社 無線通信装置
US20090190675A1 (en) * 2004-08-31 2009-07-30 Qualcomm Incorporated Synchronization in a broadcast ofdm system using time division multiplexed pilots
CN100356706C (zh) * 2005-05-26 2007-12-19 北京航空航天大学 基于线性调频序列的扩频通信系统中的分集接收方法
KR101320398B1 (ko) * 2006-07-31 2013-10-22 삼성전자주식회사 셀 간 이종 주파수 호핑을 이용한 랜덤 액세스 방법 및이를 수행하는 이동 통신 장치
CN101162937B (zh) * 2006-10-10 2012-05-30 普天信息技术研究院 一种实现时分cdma系统上行同步控制的方法和基站
FR2913555A1 (fr) * 2007-03-05 2008-09-12 France Telecom Traitement de symboles dans une communication bidirectionnelle par retournement temporel.
CN109975637B (zh) * 2019-04-03 2021-11-19 合肥工业大学 一种用于汽车电能系统的综合效率量化测试与计算方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3305877B2 (ja) 1994-06-23 2002-07-24 株式会社東芝 スペクトラム拡散無線通信システムおよびこのシステムで使用される無線通信装置
US5574747A (en) * 1995-01-04 1996-11-12 Interdigital Technology Corporation Spread spectrum adaptive power control system and method
FI97581C (fi) * 1995-02-10 1997-01-10 Nokia Telecommunications Oy Vastaanotin ja menetelmä hajotuskoodien generoimiseksi vastaanottimessa
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
JP2820918B2 (ja) * 1996-03-08 1998-11-05 株式会社ワイ・アール・ピー移動通信基盤技術研究所 スペクトル拡散通信装置
US6085104A (en) * 1998-03-25 2000-07-04 Sharp Laboratories Of America, Inc. Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method
US6370397B1 (en) * 1998-05-01 2002-04-09 Telefonaktiebolaget Lm Ericsson (Publ) Search window delay tracking in code division multiple access communication systems
GB9818378D0 (en) * 1998-08-21 1998-10-21 Nokia Mobile Phones Ltd Receiver
US6363104B1 (en) * 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver
US6507602B1 (en) 1999-01-07 2003-01-14 Ericsson, Inc. Smoothing receiver channel estimates using spectral estimation
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
US6404760B1 (en) * 1999-07-19 2002-06-11 Qualcomm Incorporated CDMA multiple access interference cancellation using signal estimation

Also Published As

Publication number Publication date
JP4681180B2 (ja) 2011-05-11
ATE426272T1 (de) 2009-04-15
EP1127417A1 (de) 2001-08-29
US7016397B1 (en) 2006-03-21
CN1321367A (zh) 2001-11-07
WO2001018985A8 (en) 2001-05-31
CN1154250C (zh) 2004-06-16
NO20012134L (no) 2001-04-30
EP1127417B1 (de) 2009-03-18
FI19991871A (fi) 2001-03-02
WO2001018985A1 (en) 2001-03-15
AU7002200A (en) 2001-04-10
JP2003509892A (ja) 2003-03-11
NO20012134D0 (no) 2001-04-30

Similar Documents

Publication Publication Date Title
DE60041806D1 (de) Verfahren zum behandeln von cdma signalkomponenten
US6243410B1 (en) Demodulator having an infinite-duration impulse response filter with dynamic coeffiecient scaling
EP1096711A4 (de) Verfahren und schaltung zum cdma empfang
MXPA03003403A (es) Metodo y equipo para cancelar interferencia piloto en un sistema de comunicacion cdma.
CA2146445A1 (en) Receiver and repeater for spread-spectrum communications
ATE288641T1 (de) Adaptiver empfänger für drahtlose kommunikation
DE60028592D1 (de) Empfänger zur mehrbenutzererkennung von cdma-signalen
EP1235360A4 (de) Kommunikationsengerät und demodulationsverfahren
WO2006115459A3 (en) Joint detector in a code division multiple access radio receiver
WO2001001594A8 (en) Multistep rake combining method and apparatus
WO2001097400A3 (en) Method and apparatus for demodulating signals processed in a transmit diversity mode
AU2001290667A1 (en) Apparatus for and method of adapting a radio receiver using control functions
FI891042A0 (fi) Foerbaettringar betraeffande utjaemnare.
WO1997023962A3 (en) Method and apparatus for intersymbol interference reduction using array processing of diversity signals
WO2001003309A3 (en) Adaptive path searcher in a cdma receiver
JP2000031889A5 (de)
WO1998026619A3 (en) Circuitry and method for improved signal reception acknowledgment in a radio communication system
NO952711D0 (no) Fremgangsmåte for mottaking, samt CDMA-mottaker
ATE479237T1 (de) Verfahren und vorrichtung zur verfolgung von signalen in einem drahtlosen kommunikationssystem
WO2004052029A3 (en) Adaptive control of transmission procedures
WO2003098812A3 (en) System and method for fast walsh transform processing in a multi-coded signal environment
DE60325937D1 (de) Prozessor une verfahren zur gewichtsdetektion in einem w-cdma system mit geschlossener schleife und mehrwegdiversität
AU774692B2 (en) Wireless communications receiver employing quick paging channel symbols
WO2002027960A3 (en) Assignment and reassignment of a second finger in a cdma rake receiver
EP1339172A4 (de) Rake-empfängervorrichtung und empfangsverfahren

Legal Events

Date Code Title Description
8364 No opposition during term of opposition