BRPI0407558A - receptor de comunicação com um equalizador adaptativo que utiliza estimativa de canal - Google Patents

receptor de comunicação com um equalizador adaptativo que utiliza estimativa de canal

Info

Publication number
BRPI0407558A
BRPI0407558A BRPI0407558-7A BRPI0407558A BRPI0407558A BR PI0407558 A BRPI0407558 A BR PI0407558A BR PI0407558 A BRPI0407558 A BR PI0407558A BR PI0407558 A BRPI0407558 A BR PI0407558A
Authority
BR
Brazil
Prior art keywords
channel
communication receiver
adaptive equalizer
channel estimation
uses channel
Prior art date
Application number
BRPI0407558-7A
Other languages
English (en)
Inventor
Durga Prasad Malladi
Josef J Blanz
Yongbin Wei
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0407558A publication Critical patent/BRPI0407558A/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
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • 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
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03522—Frequency domain
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03745—Timing of adaptation
    • H04L2025/03764—Timing of adaptation only during predefined intervals
    • H04L2025/0377—Timing of adaptation only during predefined intervals during the reception of training signals
    • 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
    • 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
    • H04L25/024—Channel estimation channel estimation algorithms
    • H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
    • H04L25/0244—Channel estimation channel estimation algorithms using matrix methods with inversion

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

"RECEPTOR DE COMUNICAçãO COM UM EQUALIZADOR ADAPTATIVO QUE UTILIZA ESTIMATIVA DE CANAL". A presente invenção descreve um método para estimar um sinal transmitido em um sistema de comunicação sem fio. Um sinal sem fio é recebido incluindo um canal piloto e pelo menos um outro canal. Um sinal transmitido é estimado utilizando um equalizador e o sinal sem fio recebido. As entradas de um filtro do equalizador são adaptadas pela utilização de uma estimativa de canal. A estimativa de canal é calculada a partir do canal piloto. O canal piloto e o pelo menos um outro canal são separados.
BRPI0407558-7A 2003-02-18 2004-02-18 receptor de comunicação com um equalizador adaptativo que utiliza estimativa de canal BRPI0407558A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/368,891 US20040203812A1 (en) 2003-02-18 2003-02-18 Communication receiver with an adaptive equalizer that uses channel estimation
PCT/US2004/004707 WO2004075499A1 (en) 2003-02-18 2004-02-18 Communication receiver with an adaptive equalizer that uses channel estimation

Publications (1)

Publication Number Publication Date
BRPI0407558A true BRPI0407558A (pt) 2006-02-14

Family

ID=32907646

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0407558-7A BRPI0407558A (pt) 2003-02-18 2004-02-18 receptor de comunicação com um equalizador adaptativo que utiliza estimativa de canal

Country Status (13)

Country Link
US (1) US20040203812A1 (pt)
EP (2) EP1595377A1 (pt)
JP (2) JP2006518167A (pt)
KR (1) KR101061743B1 (pt)
CN (2) CN101882945A (pt)
AU (1) AU2004213990C1 (pt)
BR (1) BRPI0407558A (pt)
CA (1) CA2516203A1 (pt)
MX (1) MXPA05008763A (pt)
RU (1) RU2345496C2 (pt)
TW (1) TW200423649A (pt)
UA (1) UA85180C2 (pt)
WO (1) WO2004075499A1 (pt)

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CN102790734B (zh) * 2011-05-18 2014-12-31 中国科学院声学研究所 一种基于信道估计的线性自适应均衡器
CN102340466B (zh) * 2011-10-25 2013-12-25 西安电子科技大学 基于支持向量机的自适应判决反馈均衡器设计方法
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US9380520B2 (en) 2013-03-13 2016-06-28 Qualcomm Incorporated Using motion to improve local wireless network connectivity
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KR102207829B1 (ko) * 2014-05-19 2021-01-26 한국전자통신연구원 고효율 위성 서비스를 위한 통신 장치 및 방법
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Also Published As

Publication number Publication date
CN1751486A (zh) 2006-03-22
AU2004213990C1 (en) 2011-03-31
CN1751486B (zh) 2010-09-01
JP2011176836A (ja) 2011-09-08
AU2004213990B2 (en) 2010-01-21
EP1595377A1 (en) 2005-11-16
JP2006518167A (ja) 2006-08-03
UA85180C2 (ru) 2009-01-12
CA2516203A1 (en) 2004-09-02
KR20050109070A (ko) 2005-11-17
RU2345496C2 (ru) 2009-01-27
AU2004213990A1 (en) 2004-09-02
CN101882945A (zh) 2010-11-10
WO2004075499A1 (en) 2004-09-02
TW200423649A (en) 2004-11-01
US20040203812A1 (en) 2004-10-14
JP5254388B2 (ja) 2013-08-07
MXPA05008763A (es) 2005-10-05
EP2200239A3 (en) 2013-11-20
KR101061743B1 (ko) 2011-09-02
RU2005129083A (ru) 2006-01-27
EP2200239A2 (en) 2010-06-23

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.