ATE417412T1 - Früh-spät detektion in einem cdma empfänger - Google Patents

Früh-spät detektion in einem cdma empfänger

Info

Publication number
ATE417412T1
ATE417412T1 AT01983440T AT01983440T ATE417412T1 AT E417412 T1 ATE417412 T1 AT E417412T1 AT 01983440 T AT01983440 T AT 01983440T AT 01983440 T AT01983440 T AT 01983440T AT E417412 T1 ATE417412 T1 AT E417412T1
Authority
AT
Austria
Prior art keywords
early
component
late
rake
cdma receiver
Prior art date
Application number
AT01983440T
Other languages
English (en)
Inventor
Charles Razzell
Original Assignee
Nxp Bv
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 Nxp Bv filed Critical Nxp Bv
Application granted granted Critical
Publication of ATE417412T1 publication Critical patent/ATE417412T1/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
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
AT01983440T 2000-08-28 2001-08-17 Früh-spät detektion in einem cdma empfänger ATE417412T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/649,672 US6901105B1 (en) 2000-08-28 2000-08-28 Tracking of a multi-path resolved signal in a rake receiver
US09/727,113 US6954486B2 (en) 2000-08-28 2000-11-29 Early-late detection

Publications (1)

Publication Number Publication Date
ATE417412T1 true ATE417412T1 (de) 2008-12-15

Family

ID=24605770

Family Applications (2)

Application Number Title Priority Date Filing Date
AT01983440T ATE417412T1 (de) 2000-08-28 2001-08-17 Früh-spät detektion in einem cdma empfänger
AT01960714T ATE378737T1 (de) 2000-08-28 2001-08-27 Nachführung eines mehrweg aufgelösten signals in einem rake-empfänger

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT01960714T ATE378737T1 (de) 2000-08-28 2001-08-27 Nachführung eines mehrweg aufgelösten signals in einem rake-empfänger

Country Status (8)

Country Link
US (2) US6901105B1 (de)
EP (1) EP1228577B1 (de)
JP (2) JP4836158B2 (de)
KR (2) KR100873503B1 (de)
CN (1) CN1254021C (de)
AT (2) ATE417412T1 (de)
DE (2) DE60136907D1 (de)
WO (1) WO2002019556A2 (de)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1117185A1 (de) 2000-01-14 2001-07-18 Lucent Technologies Inc. Verfahren und RAKE-Empfänger zur Kodenachführung in einem CDMA-Nachrichtenübertragungssystem
EP1117186A1 (de) * 2000-01-14 2001-07-18 Lucent Technologies Inc. Adaptiver Kodenachlauf-RAKE-Empfänger für CDMA-Nachrichtenübertragung
EP1130792A1 (de) * 2000-03-03 2001-09-05 Lucent Technologies Inc. Verfahren und Rake-empfänger für Phasenvektorschätzung in Kommunikationssystemen
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
US6448547B1 (en) * 2001-01-24 2002-09-10 Applied Optoelectronics, Inc. Method for determining photodiode performance parameters
GB2381422A (en) * 2001-10-24 2003-04-30 Ipwireless Inc Code division multiple access receiver
JP3813490B2 (ja) * 2001-10-30 2006-08-23 富士通株式会社 スペクトラム拡散レイク受信機
EP1365518A1 (de) * 2002-05-21 2003-11-26 Nokia Corporation Verfahren und Vorrichtung zur Synchronisierung von DS-CDMA Mehrwegsignalen
EP1372269A1 (de) * 2002-06-12 2003-12-17 Agilent Technologies, Inc. - a Delaware corporation - Verbesserte Spreizspektrum-RAKE-empfänger
KR100923518B1 (ko) 2002-11-22 2009-10-27 인터디지탈 테크날러지 코포레이션 복소 가중치 생성(ｃｗｇ) 알고리즘을 이용한 레이크수신기에서의 채널 이득 추정
US7310365B2 (en) * 2003-10-31 2007-12-18 Texas Instruments Incorporated Group decision rule in code tracking using a delay lock loop (DLL)
BR0318570A (pt) 2003-11-04 2006-10-10 Thomson Licensing rastreamento inteligente de código para sistemas de espectro de difusão
JP2005142939A (ja) * 2003-11-07 2005-06-02 Fujitsu Ltd 無線受信機
US7231184B2 (en) * 2003-12-05 2007-06-12 Texas Instruments Incorporated Low overhead transmit channel estimation
US7295145B2 (en) * 2004-07-21 2007-11-13 Daniel Alexander Weber Selective-sampling receiver
US8026839B2 (en) * 2004-07-21 2011-09-27 Daniel Alexander Weber Selective-sampling receiver
US7515876B2 (en) * 2005-05-03 2009-04-07 Agere Systems Inc. Rake receiver with time-shared fingers
US8934587B2 (en) 2011-07-21 2015-01-13 Daniel Weber Selective-sampling receiver

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4991147A (en) * 1973-04-26 1991-02-05 The United States Of America As Represented By The Secretary Of The Navy Preformed beam tracker
US4606051A (en) * 1983-11-10 1986-08-12 Universal Data Systems, Inc. QPSK demodulator with I and Q post-detection data correction
US5309482A (en) * 1992-03-30 1994-05-03 Novatel Communications Ltd. Receiver having an adjustable matched filter
JP3128992B2 (ja) * 1992-10-09 2001-01-29 ソニー株式会社 受信装置
JP2952305B2 (ja) * 1993-10-14 1999-09-27 エヌ・ティ・ティ移動通信網株式会社 相関検出器および通信装置
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
US6047017A (en) * 1996-04-25 2000-04-04 Cahn; Charles R. Spread spectrum receiver with multi-path cancellation
US5914949A (en) 1996-12-17 1999-06-22 Lucent Technologies Inc. Circuit and method for tracking finger off-set in a spread-spectrum rake receiver and wireless infrastructure employing the same
JP2853742B2 (ja) * 1997-06-10 1999-02-03 日本電気株式会社 直接拡散／符号分割多重方式干渉除去受信装置
US6549559B2 (en) * 1997-12-23 2003-04-15 Koninklijke Philips Electronics N.V. Apparatus and method for locking onto a psuedo-noise code in an IS-95 spread spectrum communications system
US6839378B1 (en) 1998-01-12 2005-01-04 Ericsson, Inc. Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems
JP2973416B1 (ja) 1998-06-15 1999-11-08 日本電気株式会社 Ｒａｋｅ受信回路
US6041073A (en) * 1998-09-18 2000-03-21 Golden Bridge Technology, Inc. Multi-clock matched filter for receiving signals with multipath
US6201828B1 (en) * 1998-11-12 2001-03-13 Nortel Networks Limited Fine estimation of multipath delays in spread-spectrum signals
GB2345421B (en) * 1998-12-23 2004-05-26 Symbionics Limted A direct-sequence spread-sprectrum receiver
US20030108090A1 (en) * 2000-03-30 2003-06-12 Diego Giancola Rake receiver and a method of operating a rake receiver
JP2002076990A (ja) * 2000-08-31 2002-03-15 Matsushita Electric Ind Co Ltd Ｃｄｍａ受信装置及びｃｄｍａ受信方法

Also Published As

Publication number Publication date
US6954486B2 (en) 2005-10-11
JP4815563B2 (ja) 2011-11-16
CN1254021C (zh) 2006-04-26
WO2002019556A2 (en) 2002-03-07
EP1228577A2 (de) 2002-08-07
DE60136907D1 (de) 2009-01-22
DE60131362T2 (de) 2008-10-16
KR100810780B1 (ko) 2008-03-06
KR20020043252A (ko) 2002-06-08
JP2004507969A (ja) 2004-03-11
KR20020043245A (ko) 2002-06-08
ATE378737T1 (de) 2007-11-15
EP1228577B1 (de) 2007-11-14
JP2004507968A (ja) 2004-03-11
JP4836158B2 (ja) 2011-12-14
CN1389025A (zh) 2003-01-01
US20020044592A1 (en) 2002-04-18
US6901105B1 (en) 2005-05-31
KR100873503B1 (ko) 2008-12-15
WO2002019556A3 (en) 2002-05-16
DE60131362D1 (de) 2007-12-27

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