BRPI0407540A - receptor de comunicação com um equalizador adaptativo baseado em rake - Google Patents

receptor de comunicação com um equalizador adaptativo baseado em rake

Info

Publication number
BRPI0407540A
BRPI0407540A BRPI0407540-4A BRPI0407540A BRPI0407540A BR PI0407540 A BRPI0407540 A BR PI0407540A BR PI0407540 A BRPI0407540 A BR PI0407540A BR PI0407540 A BRPI0407540 A BR PI0407540A
Authority
BR
Brazil
Prior art keywords
channel
estimated
signal
rake
pilot
Prior art date
Application number
BRPI0407540-4A
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 BRPI0407540A publication Critical patent/BRPI0407540A/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
    • H04B1/711—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
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Noise Elimination (AREA)
  • Filters That Use Time-Delay Elements (AREA)

Abstract

"RECEPTOR DE COMUNICAçãO COM UM EQUALIZADOR ADAPTATIVO BASEADO EM RAKE". A presente invenção apresenta um método para estimar um sinal transmitido. Um sinal sem fio é recebido incluindo um canal piloto e pelo menos um outro canal. O sinal sem fio é processado usando um receptor front end RAKE para prover uma pluralidade de saídas front end. A estimação de canal é efetuada na pluralidade de saídas front end para obter uma pluralidade de estimativas de canal. As estimativas de canal são, a seguir, usadas para combinar a pluralidade de saídas front end em um sinal combinado. Um sinal transmitido é estimado usando um equalizador e o sinal combinado. O equalizador inclui um filtro com uma pluralidade de entradas que são adaptadas pelo uso de um algoritmo adaptativo que usa um piloto estimado que é estimado a partir do sinal sem fio recebido. O canal piloto é transmitido no sinal sem fio que incluiu o pelo menos um outro canal. O piloto estimado é extraído e provido ao algoritmo adaptativo.
BRPI0407540-4A 2003-02-18 2004-02-17 receptor de comunicação com um equalizador adaptativo baseado em rake BRPI0407540A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/368,892 US20040161057A1 (en) 2003-02-18 2003-02-18 Communication receiver with a rake-based adaptive equalizer
PCT/US2004/004673 WO2004075432A1 (en) 2003-02-18 2004-02-17 Communication receiver with a rake-based adaptive equalizer

Publications (1)

Publication Number Publication Date
BRPI0407540A true BRPI0407540A (pt) 2006-02-14

Family

ID=32850235

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0407540-4A BRPI0407540A (pt) 2003-02-18 2004-02-17 receptor de comunicação com um equalizador adaptativo baseado em rake

Country Status (16)

Country Link
US (1) US20040161057A1 (pt)
EP (1) EP1595339B1 (pt)
JP (1) JP4559409B2 (pt)
KR (1) KR101068058B1 (pt)
CN (1) CN100542062C (pt)
AT (1) ATE446616T1 (pt)
AU (1) AU2004213985C1 (pt)
BR (1) BRPI0407540A (pt)
CA (1) CA2516114A1 (pt)
DE (1) DE602004023695D1 (pt)
IL (1) IL170144A (pt)
MX (1) MXPA05008773A (pt)
RU (1) RU2349048C2 (pt)
TW (1) TW200501605A (pt)
UA (1) UA88605C2 (pt)
WO (1) WO2004075432A1 (pt)

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Also Published As

Publication number Publication date
JP4559409B2 (ja) 2010-10-06
CN100542062C (zh) 2009-09-16
US20040161057A1 (en) 2004-08-19
EP1595339A1 (en) 2005-11-16
UA88605C2 (ru) 2009-11-10
CN1751452A (zh) 2006-03-22
ATE446616T1 (de) 2009-11-15
AU2004213985C1 (en) 2010-08-19
WO2004075432A1 (en) 2004-09-02
IL170144A (en) 2010-12-30
JP2006518165A (ja) 2006-08-03
AU2004213985A1 (en) 2004-09-02
RU2349048C2 (ru) 2009-03-10
MXPA05008773A (es) 2006-03-21
CA2516114A1 (en) 2004-09-02
DE602004023695D1 (de) 2009-12-03
EP1595339B1 (en) 2009-10-21
IL170144A0 (en) 2009-02-11
AU2004213985B2 (en) 2010-01-28
TW200501605A (en) 2005-01-01
KR20050099628A (ko) 2005-10-14
KR101068058B1 (ko) 2011-09-28
RU2005129082A (ru) 2006-01-27

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Legal Events

Date Code Title Description
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.