BR9712722A - Receptor digital para sinais de multiportadora, e, processo para estimar uma resposta de frequência de uma canal. - Google Patents

Receptor digital para sinais de multiportadora, e, processo para estimar uma resposta de frequência de uma canal.

Info

Publication number
BR9712722A
BR9712722A BR9712722-1A BR9712722A BR9712722A BR 9712722 A BR9712722 A BR 9712722A BR 9712722 A BR9712722 A BR 9712722A BR 9712722 A BR9712722 A BR 9712722A
Authority
BR
Brazil
Prior art keywords
digital receiver
channel
signals
frequency response
transmitted
Prior art date
Application number
BR9712722-1A
Other languages
English (en)
Portuguese (pt)
Inventor
Dawood Alam
Matthew James Collins
David Huw Davies
Peter Anthony Keevill
John Matthew Nolan
Thomas Foxcroft
Jonathan Parker
Original Assignee
Discovision Ass
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
Priority claimed from GBGB9622728.5A external-priority patent/GB9622728D0/en
Application filed by Discovision Ass filed Critical Discovision Ass
Publication of BR9712722A publication Critical patent/BR9712722A/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
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0057—Block codes
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • 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
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • 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
    • 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
    • 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
    • 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
    • H04L27/2657—Carrier 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
    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mathematical Physics (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • Power Engineering (AREA)
  • Artificial Intelligence (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Error Detection And Correction (AREA)
  • Stereo-Broadcasting Methods (AREA)
  • Superheterodyne Receivers (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
BR9712722-1A 1996-10-31 1997-10-22 Receptor digital para sinais de multiportadora, e, processo para estimar uma resposta de frequência de uma canal. BR9712722A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB9622728.5A GB9622728D0 (en) 1996-10-31 1996-10-31 Timing synchronization in a reciever employing orthogonal frequency division mutiplexing
GB9720550A GB2318953A (en) 1996-10-31 1997-09-26 OFDM receiver with FFT window sync.
PCT/US1997/018911 WO1998019410A2 (en) 1996-10-31 1997-10-22 Single chip vlsi implementation of a digital receiver employing orthogonal frequency division multiplexing

Publications (1)

Publication Number Publication Date
BR9712722A true BR9712722A (pt) 1999-10-26

Family

ID=26310320

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9712722-1A BR9712722A (pt) 1996-10-31 1997-10-22 Receptor digital para sinais de multiportadora, e, processo para estimar uma resposta de frequência de uma canal.

Country Status (9)

Country Link
EP (1) EP0938795A2 (zh)
JP (2) JP2001527706A (zh)
KR (1) KR20000052956A (zh)
CN (1) CN1249099A (zh)
AU (1) AU727726B2 (zh)
BR (1) BR9712722A (zh)
CA (1) CA2270149A1 (zh)
IL (1) IL129655A0 (zh)
WO (1) WO1998019410A2 (zh)

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US6940933B1 (en) 1999-06-23 2005-09-06 Cingular Wireless Ii, Llc Apparatus and method for synchronization in a multiple-carrier communications system by observing a phase-frequency relationship of a plurality of pilot signals
US6930995B1 (en) * 1999-06-23 2005-08-16 Cingular Wireless Ii, Llc Apparatus and method for synchronization in a multiple-carrier communication system by observing a plurality of synchronization indicators
EP1273148A2 (en) * 2000-03-30 2003-01-08 QUALCOMM Incorporated Method and apparatus for a mobile station application to identify specified events
EP1178640B1 (en) 2000-08-01 2006-05-24 Sony Deutschland GmbH Device and method for channel estimating an OFDM system
JP3960511B2 (ja) * 2001-05-07 2007-08-15 日本放送協会 Ｏｆｄｍ信号解析装置
EP1267536A1 (en) 2001-06-13 2002-12-18 Conexant Systems, Inc. Multicarrier receiver with detection of the transmission mode and length of the guard interval
EP1283614A1 (en) * 2001-08-10 2003-02-12 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Channel estimation in a multicarrier transmit diversity system
FR2830389B1 (fr) * 2001-10-03 2004-09-24 Canon Kk Procede et dispositif combinant estimation de canal et synchronisation temporelle pour la reception
US7548506B2 (en) 2001-10-17 2009-06-16 Nortel Networks Limited System access and synchronization methods for MIMO OFDM communications systems and physical layer packet and preamble design
KR100429528B1 (ko) 2002-01-23 2004-05-03 삼성전자주식회사 디지털 통신 방법 및 장치
US7224666B2 (en) 2002-05-13 2007-05-29 Texas Instruments Incorporated Estimating frequency offsets using pilot tones in an OFDM system
EP1408665B1 (en) 2002-10-10 2017-09-06 Panasonic Intellectual Property Management Co., Ltd. Detection of the position of pilot symbols in a multicarrier signal
DE102004047600A1 (de) * 2004-09-30 2006-04-13 Robert Bosch Gmbh Verfahren zum Synchronisieren eines Abtasttaktes sowie Synchronisationseinheit für ein Mehrträgerempfangssystem
KR100686140B1 (ko) * 2005-01-18 2007-02-23 엘지전자 주식회사 트래커 락 발생 방법
JP2006287756A (ja) 2005-04-01 2006-10-19 Ntt Docomo Inc 送信装置、送信方法、受信装置及び受信方法
CN101110803B (zh) * 2006-07-18 2011-06-01 大唐移动通信设备有限公司 一种基于快速傅立叶变换和反变换联合运算的实现方法
US8238436B2 (en) * 2007-03-30 2012-08-07 Mediatek Inc. Methods and device for fast acquisition of digital video signals
CN101552756B (zh) * 2008-04-03 2013-06-12 联咏科技股份有限公司 正交频分多路复用调制接收装置及其所使用的滤波器
CN101257472B (zh) * 2008-04-09 2011-04-27 浙江大学 正交频分复用接收机系统及其自动增益控制方法
WO2010056204A2 (en) * 2008-11-12 2010-05-20 Agency For Science, Technology And Research A multiple access communication system
CN101626250A (zh) * 2009-07-23 2010-01-13 无锡圆芯微电子有限公司 一种对具备单个纠错能力的Reed-Solomon解码器的集成电路实现方法
EP2494753A2 (en) 2009-10-30 2012-09-05 Bangor University Synchronisation process in optical frequency division multiplexing transmission systems
GB2489922A (en) 2011-04-06 2012-10-17 Univ Bangor Synchronising optical OFDM signal with pattern of DC offset levels superimposed upon OFDM symbols
EP3186937B1 (en) * 2014-08-28 2023-11-22 Atlas Global Technologies LLC Frame transmitting method and frame receiving method
US10003986B2 (en) * 2014-09-26 2018-06-19 Futurewei Technologies, Inc. Device, network, and method for communications with variable-duration reference signals
FR3038084B1 (fr) * 2015-06-29 2017-12-29 Centre National De La Recherche Scient (C N R S) Microprocesseur parallele stochastique
CN107454030B (zh) * 2017-07-17 2020-03-17 科大智能电气技术有限公司 一种电力线宽带载波半并行发射机及其实现方法
CN109391580B (zh) * 2017-08-04 2021-06-15 安立股份有限公司 同步装置及同步方法
CN110830086B (zh) * 2018-08-07 2021-06-22 航天信息股份有限公司 一种信号处理装置和阅读器
CN109286381B (zh) * 2018-09-12 2022-03-08 西安微电子技术研究所 一种基于温度计编码的自动增益控制电路及控制方法
CN111371717B (zh) * 2018-12-26 2022-08-05 深圳市力合微电子股份有限公司 一种ofdm调制中用对称导频进行相位跟踪的方法
CN112202457A (zh) * 2019-07-08 2021-01-08 得琦电子股份有限公司 可快速选择频道的无线音频传输系统的频道选单界面
CN112099339B (zh) * 2020-07-27 2021-08-24 季华实验室 Utc数据接收器及计时器
CN112231847B (zh) * 2020-11-04 2024-04-02 中国商用飞机有限责任公司北京民用飞机技术研究中心 转捩位置确定方法、装置、电子设备及存储介质
CN112787723B (zh) * 2020-12-29 2022-03-25 武汉邮电科学研究院有限公司 一种非线性编码器、编码方法及光传输系统
CN112818633B (zh) * 2021-04-20 2021-07-20 北京智芯仿真科技有限公司 层间耦合动态施加的集成电路电流分布的迭代方法及装置
CN116153362B (zh) * 2023-04-20 2023-08-25 浙江力积存储科技有限公司 读取等待时间计数器延迟反馈方法、延迟反馈存储结构

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Also Published As

Publication number Publication date
AU727726B2 (en) 2000-12-21
JP2001527706A (ja) 2001-12-25
WO1998019410A2 (en) 1998-05-07
IL129655A0 (en) 2000-02-29
EP0938795A2 (en) 1999-09-01
CA2270149A1 (en) 1998-05-07
AU5147198A (en) 1998-05-22
CN1249099A (zh) 2000-03-29
WO1998019410A3 (en) 1998-08-27
KR20000052956A (ko) 2000-08-25
JP2005045788A (ja) 2005-02-17

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Legal Events

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B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A E 9A 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 1903 DE 26/06/2007.