BRPI0700130A - demodulador de multiplexação, receptor e método de demodular multiplexação por divisão de freqüência ortogonal - Google Patents

demodulador de multiplexação, receptor e método de demodular multiplexação por divisão de freqüência ortogonal

Info

Publication number
BRPI0700130A
BRPI0700130A BRPI0700130-4A BRPI0700130A BRPI0700130A BR PI0700130 A BRPI0700130 A BR PI0700130A BR PI0700130 A BRPI0700130 A BR PI0700130A BR PI0700130 A BRPI0700130 A BR PI0700130A
Authority
BR
Brazil
Prior art keywords
demodulator
fourier transform
frequency division
unit
ofdm
Prior art date
Application number
BRPI0700130-4A
Other languages
English (en)
Inventor
Hidetoshi Kawauchi
Original Assignee
Sony Corp
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 Sony Corp filed Critical Sony Corp
Publication of BRPI0700130A publication Critical patent/BRPI0700130A/pt

Links

Classifications

    • 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
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between 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
    • H04L25/0212—Channel estimation of impulse response
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • 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
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Landscapes

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

Abstract

DEMODULADOR DE MULTIPLEXAçãO, RECEPTOR E MéTODO DE DEMODULAR MULTIPLEXAçãO POR DIVISãO DE FREQUêNCIA ORTOGONAL. Um demodulador de multiplexação por divisão de freqüência ortogonal (OFDM) demodula um sinal OFDM constituído por símbolos OFDM, cada um incluindo pelo menos um símbolo efetivo e um sinal conhecido espalhado. O demodulador de OFDM inclui uma unidade de execução de transformada de Fourier para efetuar uma operação de transformada de Fourier, uma unidade de extração de sinal, uma unidade de interpolação de dimensão de tempo, uma unidade de geração de espalhamento de retardo, uma unidade de interpolação de dimensão de freqüência, e uma unidade de equalização de forma de onda. A unidade de geração de espalhamento de retardo emprega uma diferença de tempo entre um instante para uma posição inicial da operação de transformada de Fourier efetuada pela unidade de execução de transformada de Fourier e um instante no qual a última via a chega chegou como o espalhamento de retardo.
BRPI0700130-4A 2006-01-30 2007-01-29 demodulador de multiplexação, receptor e método de demodular multiplexação por divisão de freqüência ortogonal BRPI0700130A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006021159A JP2007202081A (ja) 2006-01-30 2006-01-30 Ｏｆｄｍ復調装置及び方法

Publications (1)

Publication Number Publication Date
BRPI0700130A true BRPI0700130A (pt) 2007-11-06

Family

ID=38016660

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0700130-4A BRPI0700130A (pt) 2006-01-30 2007-01-29 demodulador de multiplexação, receptor e método de demodular multiplexação por divisão de freqüência ortogonal

Country Status (5)

Country Link
US (1) US7664189B2 (pt)
EP (1) EP1814274A1 (pt)
JP (1) JP2007202081A (pt)
CN (1) CN101079866B (pt)
BR (1) BRPI0700130A (pt)

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US20060120468A1 (en) * 2004-12-03 2006-06-08 Che-Li Lin Method and system for guard interval size detection
US20060140109A1 (en) * 2004-12-28 2006-06-29 Mediatek Incorporation Method and system for joint mode and guard interval detection
JP3841819B1 (ja) * 2005-11-08 2006-11-08 三菱電機株式会社 直交周波数分割多重信号の受信装置および受信方法
TWI329435B (en) * 2006-09-13 2010-08-21 Sunplus Technology Co Ltd Channel estimation apparatus with an optimal search and method thereof
JP4916846B2 (ja) * 2006-11-20 2012-04-18 シャープ株式会社 Ｏｆｄｍ復調装置及びｏｆｄｍ復調方法
US7532562B2 (en) * 2007-02-26 2009-05-12 Provigent Ltd. High-data-rate communication link using multiple lower rate modems
EP2043314A1 (en) * 2007-09-25 2009-04-01 Thomson Licensing, Inc. A self-adaptive frequency interpolator for use in a multi-carrier receiver
JP4362142B2 (ja) * 2007-10-05 2009-11-11 Ｏｋｉセミコンダクタ株式会社 遅延プロファイル生成器
EP2071787B1 (en) * 2007-12-10 2013-03-13 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method and apparatus for positioning an FFT- window in an OFDM-receiver
CN101521652B (zh) * 2008-02-29 2013-02-06 索尼株式会社 接收设备和接收方法
JP4600559B2 (ja) * 2008-02-29 2010-12-15 ソニー株式会社 受信装置、受信方法、およびプログラム
JP4684308B2 (ja) * 2008-03-27 2011-05-18 三菱電機株式会社 復調装置
WO2009125499A1 (ja) * 2008-04-12 2009-10-15 パイオニア株式会社 受信装置及び受信方法
JP4586908B2 (ja) * 2008-08-21 2010-11-24 ソニー株式会社 受信装置、信号処理方法、及び、プログラム
JP4623180B2 (ja) * 2008-09-19 2011-02-02 ソニー株式会社 受信装置、受信方法、およびプログラム
JP4655241B2 (ja) 2008-09-30 2011-03-23 ソニー株式会社 受信装置、受信方法、およびプログラム
JP5175761B2 (ja) * 2009-02-12 2013-04-03 株式会社東芝 Ｏｆｄｍ受信装置
GB2473674A (en) * 2009-09-22 2011-03-23 Sony Corp OFDM receiver with a plurality of prediction filters to reduce noise in channel transfer function estimates
JP4926307B2 (ja) * 2010-01-18 2012-05-09 三菱電機株式会社 デジタル放送受信装置及び遅延プロファイル作成方法
JP5577884B2 (ja) * 2010-06-28 2014-08-27 ソニー株式会社 受信装置、及び、受信方法、並びに、受信システム
JP5284500B2 (ja) * 2011-03-16 2013-09-11 株式会社東芝 連結送信システム及び連結送信方法
US8891705B1 (en) * 2013-08-26 2014-11-18 Amlogic Co., Ltd. Methods for signal processing to reduce inter-symbol-interference
WO2015107677A1 (ja) * 2014-01-17 2015-07-23 三菱電機株式会社 受信装置および受信方法
CN110149636B (zh) * 2018-02-13 2021-08-13 上海华为技术有限公司 信号接收方法、装置及设备

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001177461A (ja) 1999-12-15 2001-06-29 Mitsubishi Electric Corp 通信システム
JP4465797B2 (ja) 2000-04-07 2010-05-19 ソニー株式会社 受信装置及び受信方法
JP2002261726A (ja) 2001-03-01 2002-09-13 Nippon Telegr & Teleph Corp <Ntt> Ｏｆｄｍ信号送受信装置
JP2002344411A (ja) 2001-05-11 2002-11-29 Sony Corp Ｏｆｄｍ復調装置及び方法
JP2003032217A (ja) * 2001-07-11 2003-01-31 Matsushita Electric Ind Co Ltd Ｏｆｄｍ通信装置およびｏｆｄｍ信号の搬送波再生方法
JP3559268B2 (ja) 2002-05-23 2004-08-25 松下電器産業株式会社 パス検出装置及び通信端末装置
GB2395094A (en) 2002-10-28 2004-05-12 Sony Uk Ltd Determining a symbol synch time in an OFDM receiver
JP3740468B2 (ja) * 2003-01-22 2006-02-01 株式会社東芝 Ｏｆｄｍ受信装置及びデータ復調方法
DE60321401D1 (de) 2003-05-12 2008-07-10 Mitsubishi Electric Corp Demodulationseinrichtung und demodulationsverfahren
KR20040106847A (ko) * 2003-06-11 2004-12-18 삼성전자주식회사 다중 반송파 수신 시스템 및 그의 신호 처리 방법
GB2412551A (en) 2004-03-26 2005-09-28 Sony Uk Ltd Receiver
GB2412552A (en) * 2004-03-26 2005-09-28 Sony Uk Ltd Receiver
JP2006311385A (ja) * 2005-04-28 2006-11-09 Toshiba Corp 受信装置

Also Published As

Publication number Publication date
US20070177685A1 (en) 2007-08-02
CN101079866A (zh) 2007-11-28
EP1814274A1 (en) 2007-08-01
JP2007202081A (ja) 2007-08-09
CN101079866B (zh) 2010-09-29
US7664189B2 (en) 2010-02-16

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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 2291 DE 02/12/2014.

B15K Others concerning applications: alteration of classification

Ipc: H04L 25/02 (2006.01), H04L 27/26 (2006.01), H04L 5