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BRPI0407466A - filtro casado de canal (cmf) back-end eficiente - Google Patents

filtro casado de canal (cmf) back-end eficiente

Info

Publication number
BRPI0407466A
BRPI0407466A BRPI0407466-1A BRPI0407466A BRPI0407466A BR PI0407466 A BRPI0407466 A BR PI0407466A BR PI0407466 A BRPI0407466 A BR PI0407466A BR PI0407466 A BRPI0407466 A BR PI0407466A
Authority
BR
Brazil
Prior art keywords
channel
backend
filter
synchronization
peak detector
Prior art date
Application number
BRPI0407466-1A
Other languages
English (en)
Inventor
Serguei A Glazko
James Y Hurt
Kuei-Chiang Lai
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 BRPI0407466A publication Critical patent/BRPI0407466A/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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • 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
    • H04B1/709—Correlator structure
    • H04B1/7093—Matched filter type

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)

Abstract

"FILTRO CASADO DE CANAL (CMF) DE BACK-END EFICIENTE". Um método e um equipamento eficientes para implementar um filtro casado de canal de back-end em um receptor são revelados. Uma modalidade típica de filtro casado de canal inclui um detector de pico para estabelecer sincronização de processamento de um sinal desespalhado, um estimador de canal que produz uma estimativa de resposta ao impulso de canal (CIR) a partir do sinal desespalhado com base na sincronização pelo detector de pico e um combinador de símbolo de back-end combinando coerentemente componentes de multipercurso dominantes do sinal desespalhado por pesos com base na estimativa de CIR baseada na sincronização pelo detector de pico para gerar uma variável de decisão. Em uma implementação de espalhamento espectral digital, o sinal desespalhado operado pelo filtro casado de, canal foi previamente correlacionado com uma réplica de seqüência de espalhamento.
BRPI0407466-1A 2003-02-13 2004-02-12 filtro casado de canal (cmf) back-end eficiente BRPI0407466A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/366,040 US7349461B2 (en) 2003-02-13 2003-02-13 Efficient back-end channel matched filter (CMF)
PCT/US2004/004603 WO2004073198A1 (en) 2003-02-13 2004-02-12 Efficient back-end channel matched filter (cmf)

Publications (1)

Publication Number Publication Date
BRPI0407466A true BRPI0407466A (pt) 2006-02-14

Family

ID=32849695

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0407466-1A BRPI0407466A (pt) 2003-02-13 2004-02-12 filtro casado de canal (cmf) back-end eficiente

Country Status (4)

Country Link
US (1) US7349461B2 (pt)
KR (1) KR101067306B1 (pt)
BR (1) BRPI0407466A (pt)
WO (1) WO2004073198A1 (pt)

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US8428103B2 (en) 2009-06-10 2013-04-23 Harris Corporation Discrete time chaos dithering
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Also Published As

Publication number Publication date
US20040161022A1 (en) 2004-08-19
KR101067306B1 (ko) 2011-09-23
US7349461B2 (en) 2008-03-25
WO2004073198A1 (en) 2004-08-26
KR20050098921A (ko) 2005-10-12

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [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.