BRPI0513804A - dispositivo de transmissão de rádio, dispositivo de recepção de rádio, método de transmissão de rádio e método de recepção de rádio - Google Patents

dispositivo de transmissão de rádio, dispositivo de recepção de rádio, método de transmissão de rádio e método de recepção de rádio

Info

Publication number
BRPI0513804A
BRPI0513804A BRPI0513804-3A BRPI0513804A BRPI0513804A BR PI0513804 A BRPI0513804 A BR PI0513804A BR PI0513804 A BRPI0513804 A BR PI0513804A BR PI0513804 A BRPI0513804 A BR PI0513804A
Authority
BR
Brazil
Prior art keywords
radio
radio transmission
data signal
radio reception
fourier
Prior art date
Application number
BRPI0513804-3A
Other languages
English (en)
Inventor
Kenichi Miyoshi
Akihiko Nishio
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BRPI0513804A publication Critical patent/BRPI0513804A/pt

Links

Classifications

    • 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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference 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
    • H04L25/022—Channel estimation of frequency response
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
    • 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
    • H04L27/2626—Arrangements specific to the transmitter only
    • H04L27/2627—Modulators
    • H04L27/2634—Inverse fast Fourier transform [IFFT] or inverse discrete Fourier transform [IDFT] modulators in combination with other circuits for modulation
    • 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
    • H04L27/2649—Demodulators
    • H04L27/26524—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation
    • H04L27/26526—Fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators in combination with other circuits for demodulation with inverse FFT [IFFT] or inverse DFT [IDFT] demodulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] receiver or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Transmitters (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

DISPOSITIVO DE TRANSMISSãO DE RADIO, DISPOSITIVO DE RECEPçãO DE RáDIO, MéTODO DE TRANSMISSãO DE RáDIO E MéTODO DE RECEPçãO DE RADIO. A presente invenção refere-se a um dispositivo de transmissão de rádio capaz de melhorar a precisão da estimativa de canal para cada freqüência. Neste dispositivo, uma unidade FFT (103) submete um sinal de dado a uma transformada de Fourier. Uma unidade de substituição de sinal (108) substitui o componente de freqüência de uma parte de uma pluralidade de componentes de freqüência que compõem o sinal de dado transformado por Fourier, para um sinal piloto. Uma unidade IFFT (109) submete o sinal de dados, cujo componente de freqüência foi parcialmente substituído pelo sinal piloto, a uma transformação de Fourier inversa. Uma unidade RF de transmissão (111) transmite o sinal de dado inversamente transformado por Fourier em um portador simples.
BRPI0513804-3A 2004-07-29 2005-07-14 dispositivo de transmissão de rádio, dispositivo de recepção de rádio, método de transmissão de rádio e método de recepção de rádio BRPI0513804A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004222388 2004-07-29
PCT/JP2005/013093 WO2006011376A1 (ja) 2004-07-29 2005-07-14 無線送信装置、無線受信装置、無線送信方法および無線受信方法

Publications (1)

Publication Number Publication Date
BRPI0513804A true BRPI0513804A (pt) 2008-05-13

Family

ID=35786126

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0513804-3A BRPI0513804A (pt) 2004-07-29 2005-07-14 dispositivo de transmissão de rádio, dispositivo de recepção de rádio, método de transmissão de rádio e método de recepção de rádio

Country Status (7)

Country Link
US (2) US8111762B2 (pt)
EP (1) EP1775770A4 (pt)
JP (1) JP4794447B2 (pt)
KR (1) KR20070036147A (pt)
CN (1) CN100501994C (pt)
BR (1) BRPI0513804A (pt)
WO (1) WO2006011376A1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8484272B2 (en) * 2004-08-20 2013-07-09 Qualcomm Incorporated Unified pulse shaping for multi-carrier and single-carrier waveforms
JP2007214919A (ja) * 2006-02-09 2007-08-23 Matsushita Electric Ind Co Ltd シングルキャリア伝送用の周波数領域適応アンテナアレー無線受信装置及び無線受信方法
JP4640844B2 (ja) * 2007-01-09 2011-03-02 株式会社エヌ・ティ・ティ・ドコモ 送信装置、送信方法及び通信システム
JP2008206045A (ja) * 2007-02-22 2008-09-04 Nippon Telegr & Teleph Corp <Ntt> 無線通信システム及び無線機
JP4603062B2 (ja) 2008-06-26 2010-12-22 京セラ株式会社 信号変換器、無線信号送信システム及び無線信号受信システム
JP2010034934A (ja) * 2008-07-30 2010-02-12 Oki Semiconductor Co Ltd 伝送路推定方法及び伝送路推定器
DE102009017552B3 (de) * 2009-04-17 2010-09-30 Sew-Eurodrive Gmbh & Co. Kg Vorrichtung und Verfahren zur berührungslosen Übertragung elektrischer Leistung und Information
US9137076B2 (en) * 2009-10-30 2015-09-15 Qualcomm Incorporated Method and apparatus for mutiplexing reference signal and data in a wireless communication system
EP2398200A1 (en) * 2010-06-15 2011-12-21 Mitsubishi Electric R&D Centre Europe B.V. Method and device for transferring data and information enabling an estimate of a wireless link
JP4675432B2 (ja) * 2010-08-31 2011-04-20 株式会社エヌ・ティ・ティ・ドコモ Ｏｆｄｍ方式で変調された送信信号を受信する受信装置及び受信方法
JP6364360B2 (ja) * 2015-02-12 2018-07-25 日本電信電話株式会社 無線通信システム、無線通信方法および送信装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7274652B1 (en) * 2000-06-02 2007-09-25 Conexant, Inc. Dual packet configuration for wireless communications
JPH11284597A (ja) * 1998-03-31 1999-10-15 Jisedai Digital Television Hoso System Kenkyusho:Kk Ｏｆｄｍ伝送方式
JP2000151548A (ja) * 1998-11-05 2000-05-30 Matsushita Electric Ind Co Ltd Ｏｆｄｍ通信装置
JP4329159B2 (ja) 1999-05-20 2009-09-09 ソニー株式会社 通信装置、受信機、並びに、通信方法
JP3675670B2 (ja) * 1999-05-27 2005-07-27 パイオニア株式会社 受信装置
JP3127918B1 (ja) * 1999-07-14 2001-01-29 住友電気工業株式会社 路車間通信システム並びに路上通信局及び車載移動局
JP3116090B1 (ja) * 1999-09-17 2000-12-11 郵政省通信総合研究所長 通信システム、送信装置、受信装置、送信方法、受信方法、および、情報記録媒体
JP2002084195A (ja) * 2000-09-11 2002-03-22 Sharp Corp デジタル画像データ無線通信システム、デジタル画像データ無線送信装置およびデジタル画像データ無線受信装置
JP3464656B2 (ja) * 2000-11-06 2003-11-10 松下電器産業株式会社 無線通信装置
JP2002171239A (ja) * 2000-12-05 2002-06-14 Sony Corp 変調装置
JP3919159B2 (ja) * 2001-04-27 2007-05-23 日本放送協会 Ｏｆｄｍデジタル信号中継装置
JP2003092608A (ja) * 2001-09-18 2003-03-28 Matsushita Electric Ind Co Ltd 受信装置および受信方法
JP3910453B2 (ja) * 2002-01-23 2007-04-25 三菱電機株式会社 受信装置および伝送路推定方法
JP2003273799A (ja) * 2002-03-19 2003-09-26 Hitachi Kokusai Electric Inc 無線アクセスシステム
JP4157443B2 (ja) * 2002-07-16 2008-10-01 松下電器産業株式会社 送信方法、送信信号生成方法およびそれを用いた送信装置
CN100556012C (zh) * 2002-08-30 2009-10-28 皇家飞利浦电子股份有限公司 单载波信号的频域均衡
US6904550B2 (en) * 2002-12-30 2005-06-07 Motorola, Inc. Velocity enhancement for OFDM systems

Also Published As

Publication number Publication date
EP1775770A1 (en) 2007-04-18
CN100501994C (zh) 2009-06-17
US8111762B2 (en) 2012-02-07
CN1985372A (zh) 2007-06-20
WO2006011376A1 (ja) 2006-02-02
US20120093247A1 (en) 2012-04-19
JP4794447B2 (ja) 2011-10-19
US20080304583A1 (en) 2008-12-11
EP1775770A4 (en) 2013-01-02
JPWO2006011376A1 (ja) 2008-05-01
KR20070036147A (ko) 2007-04-02

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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 AS 5A E 6A ANUIDADES.

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 2158 DE 15/05/2012.