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 ortogonalInfo
- 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
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.
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) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
CN101521652B (zh) * | 2008-02-29 | 2013-02-06 | 索尼株式会社 | 接收设备和接收方法 |
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 |
DE112010005148B4 (de) * | 2010-01-18 | 2014-07-17 | Mitsubishi Electric Corporation | Digitalrundfunkempfänger und Verzögerungsprofil-Erzeugungsverfahren |
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 |
CN105917604B (zh) * | 2014-01-17 | 2017-07-04 | 三菱电机株式会社 | 接收装置和接收方法 |
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)
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 |
WO2004100413A1 (ja) * | 2003-05-12 | 2004-11-18 | Mitsubishi Denki Kabushiki Kaisha | 復調装置及び復調方法 |
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 |
-
2006
- 2006-01-30 JP JP2006021159A patent/JP2007202081A/ja active Pending
-
2007
- 2007-01-26 US US11/698,138 patent/US7664189B2/en not_active Expired - Fee Related
- 2007-01-29 BR BRPI0700130-4A patent/BRPI0700130A/pt not_active IP Right Cessation
- 2007-01-29 EP EP07101355A patent/EP1814274A1/en not_active Withdrawn
- 2007-01-30 CN CN2007101288745A patent/CN101079866B/zh not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7664189B2 (en) | 2010-02-16 |
JP2007202081A (ja) | 2007-08-09 |
EP1814274A1 (en) | 2007-08-01 |
US20070177685A1 (en) | 2007-08-02 |
CN101079866A (zh) | 2007-11-28 |
CN101079866B (zh) | 2010-09-29 |
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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 |