BR0103151A - Método e sistema para o processamento de sinais multiplexados por divisão de frequência ortogonal (ofdm) - Google Patents

Método e sistema para o processamento de sinais multiplexados por divisão de frequência ortogonal (ofdm)

Info

Publication number
BR0103151A
BR0103151A BR0103151-1A BR0103151A BR0103151A BR 0103151 A BR0103151 A BR 0103151A BR 0103151 A BR0103151 A BR 0103151A BR 0103151 A BR0103151 A BR 0103151A
Authority
BR
Brazil
Prior art keywords
ofdm
frequency division
initialization
orthogonal frequency
processing
Prior art date
Application number
BR0103151-1A
Other languages
English (en)
Inventor
Maxim B Belotserkovsky
Louis Robert Litwin
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0103151A publication Critical patent/BR0103151A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2662—Symbol synchronisation

Landscapes

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

Abstract

"MéTODO E SISTEMA PARA O PROCESSAMENTO DE SINAIS MULTIPLEXADOS POR DIVISãO DE FREQuêNCIA ORTOGONAL (OFDM)". Trata-se de um receptor de Multiplexação por Divisão de Freq³ência Ortogonal (OFDM), que compensa a derivação de janela FFT, efetuando-se a extração (50, 52) de um símbolo de treinamento a partir de um sinal OFDM transformado de Fourier rápido, e o processamento (60, 62, 66) do símbolo de treinamento extraído, para derivar um fator de ajuste de janela FFT e um avaliador de inicialização de dispositivo TAP equalizador associado. O receptor OFDM controla a posição de uma janela FFT e a inicialização dos dispositivos TAP, usando o fator de ajuste FFT e o valor de inicialização do dispositivo TAP equalizador. O receptor OFDM filtra, preferivelmente, (56, 64) o sinal OFDM transformado de Fourier rápido para remover o ruído de canal aditivo e aumentar a probabilidade da inicialização confiável do dispositivo TAP equalizador em um ambiente SNR baixo.
BR0103151-1A 2000-07-31 2001-07-30 Método e sistema para o processamento de sinais multiplexados por divisão de frequência ortogonal (ofdm) BR0103151A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/630,005 US6771591B1 (en) 2000-07-31 2000-07-31 Method and system for processing orthogonal frequency division multiplexed signals

Publications (1)

Publication Number Publication Date
BR0103151A true BR0103151A (pt) 2002-04-02

Family

ID=24525359

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0103151-1A BR0103151A (pt) 2000-07-31 2001-07-30 Método e sistema para o processamento de sinais multiplexados por divisão de frequência ortogonal (ofdm)

Country Status (8)

Country Link
US (1) US6771591B1 (pt)
EP (1) EP1178642A3 (pt)
JP (1) JP2002101069A (pt)
KR (1) KR100793759B1 (pt)
CN (1) CN100386980C (pt)
BR (1) BR0103151A (pt)
MX (1) MXPA01007703A (pt)
MY (1) MY126924A (pt)

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Also Published As

Publication number Publication date
MY126924A (en) 2006-10-31
MXPA01007703A (es) 2002-10-23
US6771591B1 (en) 2004-08-03
JP2002101069A (ja) 2002-04-05
KR20020011096A (ko) 2002-02-07
CN1336737A (zh) 2002-02-20
EP1178642A3 (en) 2005-06-22
CN100386980C (zh) 2008-05-07
EP1178642A2 (en) 2002-02-06
KR100793759B1 (ko) 2008-01-10

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