BR0010475A - Sistema e método para a demodulação de sinais turbo codificados através de demodulação coerente auxiliada por piloto - Google Patents

Sistema e método para a demodulação de sinais turbo codificados através de demodulação coerente auxiliada por piloto

Info

Publication number
BR0010475A
BR0010475A BR0010475-2A BR0010475A BR0010475A BR 0010475 A BR0010475 A BR 0010475A BR 0010475 A BR0010475 A BR 0010475A BR 0010475 A BR0010475 A BR 0010475A
Authority
BR
Brazil
Prior art keywords
demodulation
log probability
signal
pilot
circuit
Prior art date
Application number
BR0010475-2A
Other languages
English (en)
Inventor
Funyun Ling
Nagabhushana T Sindhushayana
Eduardo A S Esteves
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 BR0010475A publication Critical patent/BR0010475A/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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/63—Joint error correction and other techniques
    • H03M13/6337—Error control coding in combination with channel estimation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/29—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
    • H03M13/2957—Turbo codes and decoding
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/65—Purpose and implementation aspects
    • H03M13/6577—Representation or format of variables, register sizes or word-lengths and quantization
    • H03M13/658—Scaling by multiplication or division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Error Detection And Correction (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

"SISTEMA E MéTODO PARA A DEMODULAçãO DE SINAIS TURBO CODIFICADOS ATRAVéS DE DEMODULAçãO COERENTE AUXILIADA POR PILOTO". Um sistema receptor de telecomunicações para decodificar acuradamente um sinal composto recebido possuindo um componente de sinal de dados e um componente de sinal piloto. O sistema receptor inclui um primeiro circuito para recepção do sinal composto e extração de um sinal piloto e um sinal de dados a partir do sinal composto recebido. Um segundo circuito calcula uma relação de probabilidade log como uma função de uma estimativa de canal baseada no sinal piloto. Um terceiro circuito escalona a relação de probabilidade log com um fator de escalonamento de relação de probabilidade log predeterminado e provê um valor acurado de probabilidade log acurado em resposta à mesma. Um quarto circuito decodifica o sinal composto recebido com base no valor acurado de probabilidade log e no sinal de dados.
BR0010475-2A 1999-05-13 2000-05-15 Sistema e método para a demodulação de sinais turbo codificados através de demodulação coerente auxiliada por piloto BR0010475A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/311,793 US6377607B1 (en) 1999-05-13 1999-05-13 System and method for performing accurate demodulation of turbo-encoded signals via pilot assisted coherent demodulation
PCT/US2000/013418 WO2000070836A1 (en) 1999-05-13 2000-05-15 System and method for the demodulation of turbo-encoded signals via pilot assisted coherent demodulation

Publications (1)

Publication Number Publication Date
BR0010475A true BR0010475A (pt) 2003-07-15

Family

ID=23208501

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0010475-2A BR0010475A (pt) 1999-05-13 2000-05-15 Sistema e método para a demodulação de sinais turbo codificados através de demodulação coerente auxiliada por piloto

Country Status (9)

Country Link
US (2) US6377607B1 (pt)
EP (1) EP1177662A1 (pt)
JP (2) JP2003520463A (pt)
KR (1) KR100715917B1 (pt)
CN (1) CN1251461C (pt)
AU (1) AU4852300A (pt)
BR (1) BR0010475A (pt)
HK (1) HK1052597B (pt)
WO (1) WO2000070836A1 (pt)

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Also Published As

Publication number Publication date
US6975669B2 (en) 2005-12-13
EP1177662A1 (en) 2002-02-06
KR100715917B1 (ko) 2007-05-08
US20020097785A1 (en) 2002-07-25
KR20020089127A (ko) 2002-11-29
AU4852300A (en) 2000-12-05
HK1052597A1 (en) 2003-09-19
WO2000070836A1 (en) 2000-11-23
HK1052597B (zh) 2006-11-24
JP2003520463A (ja) 2003-07-02
CN1413403A (zh) 2003-04-23
JP2011050064A (ja) 2011-03-10
US6377607B1 (en) 2002-04-23
CN1251461C (zh) 2006-04-12

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