ATE353494T1 - Verfahren und empfänger, die mehrwegeverzögerungen durch entfernen von signalstrahlen aus einem leistungsverzögerungsprofil schätzen - Google Patents

Verfahren und empfänger, die mehrwegeverzögerungen durch entfernen von signalstrahlen aus einem leistungsverzögerungsprofil schätzen

Info

Publication number
ATE353494T1
ATE353494T1 AT04750619T AT04750619T ATE353494T1 AT E353494 T1 ATE353494 T1 AT E353494T1 AT 04750619 T AT04750619 T AT 04750619T AT 04750619 T AT04750619 T AT 04750619T AT E353494 T1 ATE353494 T1 AT E353494T1
Authority
AT
Austria
Prior art keywords
sequence
pdp
receiver
removal
delay profile
Prior art date
Application number
AT04750619T
Other languages
English (en)
Inventor
Gregory Edward Bottomley
Ali S Khayrallah
Henrik Olson
Johan Nilsson
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
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE353494T1 publication Critical patent/ATE353494T1/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
    • H04B1/7113—Determination of path profile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • 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
    • H04B1/7097—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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)
  • Noise Elimination (AREA)
AT04750619T 2003-04-28 2004-04-23 Verfahren und empfänger, die mehrwegeverzögerungen durch entfernen von signalstrahlen aus einem leistungsverzögerungsprofil schätzen ATE353494T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/424,958 US7212591B2 (en) 2003-04-28 2003-04-28 Methods and receivers that estimate multi-path delays by removing signal rays from a power-delay profile

Publications (1)

Publication Number Publication Date
ATE353494T1 true ATE353494T1 (de) 2007-02-15

Family

ID=33299437

Family Applications (1)

Application Number Title Priority Date Filing Date
AT04750619T ATE353494T1 (de) 2003-04-28 2004-04-23 Verfahren und empfänger, die mehrwegeverzögerungen durch entfernen von signalstrahlen aus einem leistungsverzögerungsprofil schätzen

Country Status (6)

Country Link
US (1) US7212591B2 (de)
EP (1) EP1618676B1 (de)
JP (1) JP2006524971A (de)
AT (1) ATE353494T1 (de)
DE (1) DE602004004644T2 (de)
WO (1) WO2004098087A2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7352704B1 (en) * 2003-08-29 2008-04-01 National Semiconductor Corporation Method and apparatus for multi-path delay spread detection in wideband CDMA systems
US7756191B2 (en) * 2003-12-22 2010-07-13 Nokia Corporation Deconvolution searcher for wireless communication system
DE102005002801B4 (de) * 2005-01-20 2007-06-14 Infineon Technologies Ag Verfahren zur Rake-Finger-Platzierung mit zuverlässiger Pfad-Detektion
JP4129014B2 (ja) 2005-08-10 2008-07-30 株式会社エヌ・ティ・ティ・ドコモ 移動通信端末
KR100978876B1 (ko) 2005-12-20 2010-08-31 인터디지탈 테크날러지 코포레이션 결합 랜덤성으로부터 비밀키를 발생하는 방법 및 시스템
CN101022287A (zh) * 2007-04-09 2007-08-22 互芯集成电路（北京）有限公司 码分多址通信系统中的多径检测方法及接收机
JP5137750B2 (ja) * 2008-08-29 2013-02-06 パナソニック株式会社 受信装置及び伝搬路推定方法
US8787510B2 (en) * 2008-12-31 2014-07-22 Motorola Mobility Llc Channel selection exploiting multiple observations of the channel delay spread
BR112023012471A2 (pt) * 2020-12-31 2023-09-26 Qualcomm Inc Medição e relatório de similaridade de perfil de atraso de potência (pdp)

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5615232A (en) 1993-11-24 1997-03-25 Novatel Communications Ltd. Method of estimating a line of sight signal propagation time using a reduced-multipath correlation function
FI110731B (fi) 1994-09-12 2003-03-14 Nokia Corp Menetelmä kanavan estimoimiseksi ja vastaanotin
US6839378B1 (en) * 1998-01-12 2005-01-04 Ericsson, Inc. Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems
US6731622B1 (en) * 1998-05-01 2004-05-04 Telefonaktiebolaget Lm Ericsson (Publ) Multipath propagation delay determining means using periodically inserted pilot symbols
US6229842B1 (en) * 1998-07-16 2001-05-08 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive path selection threshold setting for DS-CDMA receivers
JP3031351B2 (ja) * 1998-09-24 2000-04-10 日本電気株式会社 Ｃｄｍａ受信装置及びそれに用いるパス検出方法並びにその制御プログラムを記録した記録媒体
US6363104B1 (en) * 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver
EP1065801B1 (de) * 1999-07-01 2003-03-26 Alcatel Adaptiver Wegesucher in einem CDMA-Empfänger
JP3943305B2 (ja) * 2000-01-19 2007-07-11 三菱電機株式会社 スペクトル拡散受信装置、およびスペクトル拡散受信方法
JP3468189B2 (ja) * 2000-02-02 2003-11-17 日本電気株式会社 パターン生成回路及びそれを用いたマルチパス検出回路並びにそのマルチパス検出方法
JP3566895B2 (ja) * 2000-02-15 2004-09-15 株式会社エヌ・ティ・ティ・ドコモ 先頭波位置検出装置、受信装置、先頭位置検出装置、先頭波位置検出方法および先頭位置検出方法
JP3428637B2 (ja) * 2000-11-27 2003-07-22 日本電気株式会社 Ｃｄｍａ受信機のマルチパス検出方法および回路
US6865218B1 (en) 2000-11-27 2005-03-08 Ericsson Inc. Multipath interference reduction for a CDMA system
JP2002232327A (ja) 2001-02-05 2002-08-16 Nec Corp 受信装置に用いるパス選択方法および回路
JP3925691B2 (ja) * 2001-09-13 2007-06-06 株式会社エヌ・ティ・ティ・ドコモ 先頭波位置検出装置、先頭波受信装置、先頭波位置検出方法および先頭波位置検出プログラム
KR100453811B1 (ko) * 2001-11-30 2004-10-20 한국전자통신연구원 확산대역 통신시스템의 다중 경로 탐색 장치 및 그 방법
JP4086574B2 (ja) * 2002-04-12 2008-05-14 松下電器産業株式会社 パスサーチ回路、無線受信装置及び無線送信装置

Also Published As

Publication number Publication date
DE602004004644T2 (de) 2007-06-21
DE602004004644D1 (de) 2007-03-22
WO2004098087A3 (en) 2005-03-03
US7212591B2 (en) 2007-05-01
US20040213363A1 (en) 2004-10-28
JP2006524971A (ja) 2006-11-02
WO2004098087A2 (en) 2004-11-11
EP1618676B1 (de) 2007-02-07
EP1618676A2 (de) 2006-01-25

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