GB2363553B - Channel estimation for a CDMA system using pre-defined symbols in addition to pilot symbols - Google Patents

Channel estimation for a CDMA system using pre-defined symbols in addition to pilot symbols

Info

Publication number
GB2363553B
GB2363553B GB0116741A GB0116741A GB2363553B GB 2363553 B GB2363553 B GB 2363553B GB 0116741 A GB0116741 A GB 0116741A GB 0116741 A GB0116741 A GB 0116741A GB 2363553 B GB2363553 B GB 2363553B
Authority
GB
United Kingdom
Prior art keywords
symbols
addition
channel estimation
cdma system
pilot symbols
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 - Fee Related
Application number
GB0116741A
Other languages
English (en)
Other versions
GB0116741D0 (en
GB2363553A (en
Inventor
Hans Cavander
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of GB0116741D0 publication Critical patent/GB0116741D0/en
Publication of GB2363553A publication Critical patent/GB2363553A/en
Application granted granted Critical
Publication of GB2363553B publication Critical patent/GB2363553B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/42—TPC being performed in particular situations in systems with time, space, frequency or polarisation diversity
    • 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
    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • 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
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
GB0116741A 1998-12-16 1999-12-16 Channel estimation for a CDMA system using pre-defined symbols in addition to pilot symbols Expired - Fee Related GB2363553B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US21225898A 1998-12-16 1998-12-16
PCT/SE1999/002398 WO2000036760A1 (fr) 1998-12-16 1999-12-16 Evaluation de canaux destinee a un systeme amdc utilisant des symboles pre-definis en sus des symboles pilotes

Publications (3)

Publication Number Publication Date
GB0116741D0 GB0116741D0 (en) 2001-08-29
GB2363553A GB2363553A (en) 2001-12-19
GB2363553B true GB2363553B (en) 2003-12-03

Family

ID=22790260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0116741A Expired - Fee Related GB2363553B (en) 1998-12-16 1999-12-16 Channel estimation for a CDMA system using pre-defined symbols in addition to pilot symbols

Country Status (7)

Country Link
JP (1) JP2002533007A (fr)
CN (1) CN1192506C (fr)
AU (1) AU3092600A (fr)
DE (1) DE19983814T1 (fr)
GB (1) GB2363553B (fr)
MY (1) MY130820A (fr)
WO (1) WO2000036760A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001186082A (ja) * 1999-12-24 2001-07-06 Matsushita Electric Ind Co Ltd Ｃｄｍａ移動通信システム及び方法
FR2814011B1 (fr) * 2000-09-14 2003-10-24 France Telecom Procede d'estimation optimale d'un canal de propagation reposant uniquement sur les symboles pilotes et estimateur correspondant
CN1157880C (zh) * 2000-09-25 2004-07-14 华为技术有限公司 多时隙功率控制方法
CN1188957C (zh) * 2000-11-09 2005-02-09 连宇通信有限公司 信道估计方法及装置
EP1263179B1 (fr) * 2001-05-29 2007-06-27 Lucent Technologies Inc. Estimation de canal dans un système CDMA utilisant des symboles de service codés comme symboles pilotes supplémentaires
JP3562502B2 (ja) * 2001-09-27 2004-09-08 日本電気株式会社 Ｃｄｍａ受信装置及びその装置のチャネル推定方法
AU2002349441A1 (en) * 2002-08-06 2004-02-23 Zte Corporation A method of channel estimation in wideband cdma communication
FR2851383A1 (fr) * 2003-02-17 2004-08-20 Wavecom Procede de transmission de donnees radio, signal, systeme et dispositifs correspondant
US7366137B2 (en) 2003-05-31 2008-04-29 Qualcomm Incorporated Signal-to-noise estimation in wireless communication devices with receive diversity
CN100362762C (zh) * 2003-12-29 2008-01-16 华为技术有限公司 一种实现数据信号模式判决的装置及方法
EP2753036B1 (fr) 2013-01-08 2016-09-07 Freescale Semiconductor, Inc. Évaluation de canal pour communication sans fil
US9118515B2 (en) 2014-01-08 2015-08-25 Freescale Semiconductor, Inc. Channel estimation in wireless communication
CN105282059A (zh) 2014-06-30 2016-01-27 深圳市中兴微电子技术有限公司 一种多径选择方法和设备

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520969A2 (fr) * 1991-06-27 1992-12-30 Hughes Aircraft Company Estimation de séquence à maximum de vraisemblance pour récepteur radio mobile, cellulaire numérique
EP0715440A1 (fr) * 1994-06-22 1996-06-05 Ntt Mobile Communications Network Inc. Detecteur synchrone et procede de synchronisation pour un recepteur numerique de telecommunications
US5619524A (en) * 1994-10-04 1997-04-08 Motorola, Inc. Method and apparatus for coherent communication reception in a spread-spectrum communication system
EP0802656A2 (fr) * 1996-04-19 1997-10-22 Wavecom Signal numérique à blocs de référence multiples pour l'estimation de canal, procédés d'estimation de canal et récepteurs correspondants

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520969A2 (fr) * 1991-06-27 1992-12-30 Hughes Aircraft Company Estimation de séquence à maximum de vraisemblance pour récepteur radio mobile, cellulaire numérique
EP0715440A1 (fr) * 1994-06-22 1996-06-05 Ntt Mobile Communications Network Inc. Detecteur synchrone et procede de synchronisation pour un recepteur numerique de telecommunications
US5619524A (en) * 1994-10-04 1997-04-08 Motorola, Inc. Method and apparatus for coherent communication reception in a spread-spectrum communication system
EP0802656A2 (fr) * 1996-04-19 1997-10-22 Wavecom Signal numérique à blocs de référence multiples pour l'estimation de canal, procédés d'estimation de canal et récepteurs correspondants

Also Published As

Publication number Publication date
CN1192506C (zh) 2005-03-09
WO2000036760A1 (fr) 2000-06-22
DE19983814T1 (de) 2001-12-13
AU3092600A (en) 2000-07-03
GB0116741D0 (en) 2001-08-29
JP2002533007A (ja) 2002-10-02
GB2363553A (en) 2001-12-19
MY130820A (en) 2007-07-31
CN1334997A (zh) 2002-02-06

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20061216