BR0009711A - Método e aparelho para produzir uma estimativa de canal de um canal de comunicação em um sistema de comunicação cdma - Google Patents

Método e aparelho para produzir uma estimativa de canal de um canal de comunicação em um sistema de comunicação cdma

Info

Publication number
BR0009711A
BR0009711A BR0009711-0A BR0009711A BR0009711A BR 0009711 A BR0009711 A BR 0009711A BR 0009711 A BR0009711 A BR 0009711A BR 0009711 A BR0009711 A BR 0009711A
Authority
BR
Brazil
Prior art keywords
channel
communication
communication system
produce
producing
Prior art date
Application number
BR0009711-0A
Other languages
English (en)
Inventor
Louay A Jalloul
Eugene J Bruckert
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of BR0009711A publication Critical patent/BR0009711A/pt

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
    • H04B1/7073—Synchronisation aspects
    • 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
    • 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
    • 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)

Abstract

"MéTODO E APARELHO PARA PRODUZIR UMA ESTIMATIVA DE CANAL DE UM CANAL DE COMUNICAçãO EM UM SISTEMA DE COMUNICAçãO CDMA". Um método e aparelho no sistema de comunicação WCDMA inclui a extração de símbolos pilotos (462-56) de uma pluralidade (2 a M) de canais de comunicação de uma pluralidade (1 a M) de canais de comunicação com base nos códigos designados 2 a M correspondentes (405-436) para produzir uma pluralidade (2 a M) de símbolos pilotos extraídos (482-96), e combinar um primeiro (1) símbolo piloto extraído (420) de um primeiro (1) canal de comunicação de uma pluralidade (1 a M) de canais de comunicação e a pluralidade (2 a M) de símbolos pilotos extraídos (482-96), para produzir um símbolo piloto extraído conjunto (498) que é utilizado para produzir uma estimativa de canal conjunta (417) para decodificar um primeiro (1) símbolo de dado (414) do primeiro (1) canal de comunicação de uma pluralidade (1 a M) de canais de comunicação.
BR0009711-0A 1999-04-16 2000-03-16 Método e aparelho para produzir uma estimativa de canal de um canal de comunicação em um sistema de comunicação cdma BR0009711A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/293,318 US6192040B1 (en) 1999-04-16 1999-04-16 Method and apparatus for producing channel estimate of a communication channel in a CDMA communication system
PCT/US2000/007019 WO2000064085A1 (en) 1999-04-16 2000-03-16 Channel estimate of a communication channel in a cdma system

Publications (1)

Publication Number Publication Date
BR0009711A true BR0009711A (pt) 2002-01-08

Family

ID=23128600

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0009711-0A BR0009711A (pt) 1999-04-16 2000-03-16 Método e aparelho para produzir uma estimativa de canal de um canal de comunicação em um sistema de comunicação cdma

Country Status (6)

Country Link
US (1) US6192040B1 (pt)
EP (1) EP1179237A4 (pt)
JP (1) JP2002542715A (pt)
KR (1) KR100404826B1 (pt)
BR (1) BR0009711A (pt)
WO (1) WO2000064085A1 (pt)

Families Citing this family (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6282232B1 (en) * 1997-04-09 2001-08-28 Spacenet, Inc. Methods and apparatus for burst-mode CDMA DSSS communications receiving systems
JP3441636B2 (ja) * 1997-11-21 2003-09-02 株式会社エヌ・ティ・ティ・ドコモ チャネル推定値を求める装置および方法、受信装置ならびに伝送システム
JP3441638B2 (ja) * 1997-12-18 2003-09-02 株式会社エヌ・ティ・ティ・ドコモ チャネル推定値を求める装置および方法
US7643540B2 (en) * 1999-03-15 2010-01-05 Lg Electronics Inc. Pilot signals for synchronization and/or channel estimation
US7496132B2 (en) * 1999-03-15 2009-02-24 Kg Electronics Inc. Pilot signals for synchronization and/or channel estimation
US6721299B1 (en) * 1999-03-15 2004-04-13 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US6804264B1 (en) * 1999-03-15 2004-10-12 Lg Information & Communications, Ltd. Pilot signals for synchronization and/or channel estimation
US6791960B1 (en) 1999-03-15 2004-09-14 Lg Information And Communications, Ltd. Pilot signals for synchronization and/or channel estimation
KR100294711B1 (ko) * 1999-03-15 2001-07-12 서평원 최적의 파일럿 심볼을 이용한 프레임 동기 방법
JP4435991B2 (ja) * 1999-04-12 2010-03-24 サムスン エレクトロニクス カンパニー リミテッド 符号分割多重接続通信システムの断続送信装置及び方法
US6804214B1 (en) * 1999-04-19 2004-10-12 Telefonaktiebolaget Lm Ericsson (Publ) System and method for implementing multiple carriers in cellular networks
EP1065800A1 (en) * 1999-07-02 2001-01-03 Lucent Technologies Inc. Code division multiple access system having improved pilot channels
JP3367475B2 (ja) * 1999-07-06 2003-01-14 日本電気株式会社 無線通信機および無線通信機の消費電力制御方法
US6631125B1 (en) * 1999-10-20 2003-10-07 Nokia Corporation Channel set-up in wideband, code division multiple access systems
SG108240A1 (en) * 2000-02-23 2005-01-28 Ntt Docomo Inc Multi-carrier cdma radio transmitting method and apparatus, and channel estimation method and apparatus for multi-carrier cdma radio transmitting system
US6952561B1 (en) * 2000-08-31 2005-10-04 Lucent Technologies Inc. Enhanced metric for bit detection on fading channels with unknown statistics
JP3419749B2 (ja) * 2000-10-10 2003-06-23 松下電器産業株式会社 受信装置および受信方法
US6804310B1 (en) * 2000-11-03 2004-10-12 Koninklijke Philips Electronics N.V. Decision feedback loop apparatus and method for channel estimation and de-rotation using burst pilot bits
US6985453B2 (en) * 2001-02-15 2006-01-10 Qualcomm Incorporated Method and apparatus for link quality feedback in a wireless communication system
US20020146044A1 (en) * 2001-04-09 2002-10-10 Riaz Esmailzadeh Hybrid single/multiuser interference reduction detector
US7170924B2 (en) * 2001-05-17 2007-01-30 Qualcomm, Inc. System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
US6990137B2 (en) * 2001-05-17 2006-01-24 Qualcomm, Incorporated System and method for received signal prediction in wireless communications systems
KR100391292B1 (ko) * 2001-09-12 2003-07-12 한국전자통신연구원 시분할 양방향 통신 시스템에서의 채널 추정 장치 및 채널추정 방법
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
KR100606383B1 (ko) * 2002-01-14 2006-07-28 주식회사 팬택앤큐리텔 이동통신 시스템에서의 타임-다중화된 파일롯 및 트래픽심볼을 이용한 채널 추정 장치
KR100660959B1 (ko) * 2002-11-04 2006-12-26 리서치 인 모션 리미티드 멀티-레이트 무선 통신 시스템에서 전송 전력을 조절하기위한 방법 및 장치
DE10322943B4 (de) * 2003-05-21 2005-10-06 Infineon Technologies Ag Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung
KR100538625B1 (ko) * 2003-06-03 2005-12-22 주식회사 팬택 비선형 필터를 이용한 채널 추정 장치 및 그 방법
US7200837B2 (en) * 2003-08-21 2007-04-03 Qst Holdings, Llc System, method and software for static and dynamic programming and configuration of an adaptive computing architecture
US6985535B2 (en) 2003-10-31 2006-01-10 Motorola, Inc. Channel condition estimation for pilot coefficient selection
US7609786B2 (en) * 2004-01-28 2009-10-27 Qualcomm Incorporated Channel estimation for a communication system using spectral estimation
US7209510B2 (en) * 2004-07-20 2007-04-24 Skyworks Solution, Inc. Channel estimation system for a wideband code division multiple access (WCDMA) communication system
US7684373B2 (en) * 2004-09-02 2010-03-23 Qualcomm Incorporated Coverage determination and switching between overlay communication systems
KR20060099674A (ko) * 2005-03-14 2006-09-20 삼성전자주식회사 광대역 무선 접속 통신 시스템에서 채널 추정 성능 향상을위한 장치 및 방법
KR100776678B1 (ko) * 2005-12-08 2007-11-19 한국전자통신연구원 직접 시퀀스 대역 확산 방식의 무선 피코셀 통신시스템에서의 채널계수 추정 장치 및 그 방법
US7729715B2 (en) * 2005-12-30 2010-06-01 Motorola, Inc. Method and apparatus for power reduction for E-TFC selection
WO2008100188A1 (en) * 2007-02-15 2008-08-21 Telefonaktiebolaget Lm Ericsson (Publ) Channel measurements on combined pilot signala in multi- carrier systems
US8917799B2 (en) * 2009-10-27 2014-12-23 Maxlinear, Inc. Edge equalizer
KR101294283B1 (ko) 2011-12-19 2013-08-07 전자부품연구원 Ｏｆｄｍ 시스템의 상호상관 기반 채널 추정 방법 및 그 장치
US9118515B2 (en) 2014-01-08 2015-08-25 Freescale Semiconductor, Inc. Channel estimation in wireless communication

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1133074B1 (en) * 1995-07-19 2009-04-22 Nec Corporation CDMA diversity transmission system
US6259724B1 (en) * 1996-10-18 2001-07-10 Telefonaktiebolaget L M Ericsson (Publ) Random access in a mobile telecommunications system
US6643275B1 (en) * 1998-05-15 2003-11-04 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system

Also Published As

Publication number Publication date
JP2002542715A (ja) 2002-12-10
WO2000064085A1 (en) 2000-10-26
KR100404826B1 (ko) 2003-11-07
EP1179237A1 (en) 2002-02-13
EP1179237A4 (en) 2003-01-15
US6192040B1 (en) 2001-02-20
KR20020038570A (ko) 2002-05-23

Similar Documents

Publication Publication Date Title
BR0009711A (pt) Método e aparelho para produzir uma estimativa de canal de um canal de comunicação em um sistema de comunicação cdma
ATE352911T1 (de) Geteilte kanalstruktur, systeme und verfahren
ATE323344T1 (de) Korrelationsfilter für den rückkanal in einem drahtlosen cdma system mit mehreren bit-raten
BR0008496A (pt) Método e sistema para reduzir o tempo de sincronização em um sistema de comunicação cdma sem fio
BR0107698A (pt) Método e aparelho para troca de informações em uma rede de comunicação
BR9812311A (pt) Um método e equipamento para a transmissão de dados em um sistema de múltiplas portadoras
BR0309614A (pt) Transmissão de informação sobre formato de transmissão em canais dedicados
AR032555A1 (es) Sistema de comunicacion vsb
BRPI0519545A2 (pt) estimaÇço de canal para cancelamento de interferÊncia
BRPI0408073A (pt) sistemas e métodos para utilizar espaço de código em rede de comunicações de espalhamento espectral
BR0115217A (pt) Método e equipamento para cancelamento de interferência em um receptor com espalhamento espectral
IL147346A0 (en) Apparatus and method for encoding/decoding transport format combination indicator in cdma mobile communication system
MY117414A (en) Mobile station synchronization within a spread spectrum communications system
ATE289598T1 (de) Glutamin-thiazolidide und -pyrrolidide sowie ihre verwendung als dipeptidylpeptidase iv inhibitoren
WO2002060073A3 (en) Use of chip repetition to produce a flexible bandwidth ds-cdma system
BR0009924A (pt) Método e equipamento para o processamento de um canal piloto perfurado
TW200419920A (en) Method and system for implicit user equipment identification
BR0009547A (pt) Estimativa de canal em um sistema de comunicação sem fio cdma
BRPI0515280A (pt) aparelho e método para sincronização de freqüência em um sistema ofdm
BR0114170A (pt) Método e equipamento para o processamento de bits indicadores de paging transmitidos em um canal de paging rápido
BR0315545A (pt) Método para tirar potência ou código walsh para canal de dados (canal de dados compartilhado, por exemplo) de um canal dedicado (canal de voz, por exemplo)
ATE310343T1 (de) Vorrichtung und verfahren zur reduzierung von durch synchronisierungskode hervorgerufener störung in cdma übertragungssystemen
SG152059A1 (en) Apparatus, and an associated method, for facilitating communications in a radio communication system that provides for data communications at multiple data rates
BR0213272A (pt) método para processar sub-pacotes partilhados em sistema de comunicação
SE0202150D0 (sv) Apparatus and Method for Symbol Mapping TFCI Bits for a Hard Split Mode in a CDMA Mobile Communication System

Legal Events

Date Code Title Description
B25D Requested change of name of applicant approved

Owner name: MOTOROLA SOLUTIONS, INC. (US)

B25A Requested transfer of rights approved

Owner name: MOTOROLA MOBILITY, INC. (US)

B25G Requested change of headquarter approved

Owner name: MOTOROLA MOBILITY, INC. (US)

B25E Requested change of name of applicant rejected

Owner name: MOTOROLA MOBILITY, INC. (US)

Free format text: INDEFERIDA A ALTERACAO DE NOME SOLICITADA ATRAVES DA PETICAO NO 020130025983-RJ, DE 28/03/2013, UMA VEZ QUE NAO FOI PAGA A RESPECTIVA TAXA DE RETRIBUICAO.

B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B25D Requested change of name of applicant approved

Owner name: MOTOROLA MOBILITY LLC (US)

B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM ART. 8O COMBINADO COM ART. 13 DA LPI

B09S Decision of refusal: publication cancelled [chapter 9.2.2 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM ART. 8O COMBINADO COM ART. 13 DA LPI

B09B Patent application refused [chapter 9.2 patent gazette]