ES2098490T3 - Procedimiento para resincronizar los osciladores locales de un receptor y dispositivo para la realizacion del procedimiento. - Google Patents

Procedimiento para resincronizar los osciladores locales de un receptor y dispositivo para la realizacion del procedimiento.

Info

Publication number
ES2098490T3
ES2098490T3 ES92901024T ES92901024T ES2098490T3 ES 2098490 T3 ES2098490 T3 ES 2098490T3 ES 92901024 T ES92901024 T ES 92901024T ES 92901024 T ES92901024 T ES 92901024T ES 2098490 T3 ES2098490 T3 ES 2098490T3
Authority
ES
Spain
Prior art keywords
frequency
oscillator
procedure
intermediate frequency
beginning
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES92901024T
Other languages
English (en)
Inventor
Yvon Fouche
Jean-Bernard Rault
Couasnon Tristan De
Raoul Monnier
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vantiva SA
Original Assignee
Thomson Multimedia 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 Multimedia SA filed Critical Thomson Multimedia SA
Application granted granted Critical
Publication of ES2098490T3 publication Critical patent/ES2098490T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04L27/2647—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
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2676—Blind, i.e. without using known symbols
    • H04L27/2679—Decision-aided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/41—Structure of client; Structure of client peripherals
    • H04N21/426—Internal components of the client ; Characteristics thereof

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Advance Control (AREA)
  • Transmitters (AREA)
  • Lubricants (AREA)
  • Pyrrole Compounds (AREA)
  • Superheterodyne Receivers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Television Systems (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Enzymes And Modification Thereof (AREA)

Abstract

UN RECEPTOR LLEVA UN OSCILADOR DE TRANSPOSICION DE ALTA FRECUENCIA-FRECUENCIA INTERMEDIA, UN OSCILADOR DE TRANSPOSICION DE FRECUENCIA INTERMEDIA-BANDA DE BASE, UN OSCILADOR DE MUESTREO Y QUE RECIBE UNA SEÑAL MODULADA POR AL MENOS UN CIRCUITO DE CALCULO DE TRANSFORMADA DE FOURIER RAPIDA INVERSA FFT-1 SEGUN UNA MODULACION MULTIPORTADORA DE TIPO OFDM (ORTHOGONAL FRECUENCY DIVISION MULTIPLEXING EN LENGUA INGLESA) CON ADICION DE UN INTERVALO DE TRANSICION AL INICIO DE CADA INTERVALO DE EMISION, COMPRENDIENDO EL ESPECTRO DE DICHA SEÑAL DOS LINEAS ESPECTRALES PILOTO QUE PRESENTAN ENTRE SI UNA DIFERENCIA DE FRECUENCIA FIJA. EL PROCESO SE CARACTERIZA POR LAS SIGUIENTES ETAPAS: 1) DETERMINACION DEL INICIO DE UN INTERVALO DE EMISION, 2) DETERMINACION DE LA POSICION DE LAS DOS LINEAS ESPECTRALES PILOTO; 3) CALCULO DE LA VARIACION DE LAS FASES DE ESTAS DOS LINEAS ESPECTRALES EN FUNCION DEL TIEMPO Y EXPLOTACION DEL RESULTADO PARA AJUSTAR LA FRECUENCIA DEL OSCILADOR DE MUESTREO Y DEL OSCILADOR DE TRANSPOSICION DE FRECUENCIA INTERMEDIA-BANDA DE BASE. APLICACION EN LA TELEVISION NUMERICA.
ES92901024T 1990-11-30 1991-11-29 Procedimiento para resincronizar los osciladores locales de un receptor y dispositivo para la realizacion del procedimiento. Expired - Lifetime ES2098490T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9015015A FR2670062B1 (fr) 1990-11-30 1990-11-30 Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede.

Publications (1)

Publication Number Publication Date
ES2098490T3 true ES2098490T3 (es) 1997-05-01

Family

ID=9402779

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92901024T Expired - Lifetime ES2098490T3 (es) 1990-11-30 1991-11-29 Procedimiento para resincronizar los osciladores locales de un receptor y dispositivo para la realizacion del procedimiento.

Country Status (14)

Country Link
US (1) US5313169A (es)
EP (1) EP0513313B1 (es)
JP (1) JP3176623B2 (es)
AT (1) ATE148970T1 (es)
AU (1) AU641071B2 (es)
CA (1) CA2073777A1 (es)
DE (1) DE69124690T2 (es)
ES (1) ES2098490T3 (es)
FI (1) FI923426A0 (es)
FR (1) FR2670062B1 (es)
NO (1) NO306435B1 (es)
RU (1) RU2105423C1 (es)
SG (1) SG46723A1 (es)
WO (1) WO1992010043A1 (es)

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SE500986C2 (sv) * 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
JP3041175B2 (ja) * 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
JP3074103B2 (ja) * 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
SE501608C2 (sv) * 1994-01-18 1995-03-27 Telia Ab Förfarande och arrangemang för synkronisering vid OFDM- modulering
EP0982908B1 (en) * 1994-05-09 2005-03-09 Victor Company Of Japan, Limited Reference subcarrier setting for multicarrier transission
JP2989742B2 (ja) * 1994-05-20 1999-12-13 株式会社日立製作所 ディジタル放送システムおよび該ディジタル放送用の送信システムならびに該ディジタル放送用の受信システム
JP2731722B2 (ja) 1994-05-26 1998-03-25 日本電気株式会社 クロック周波数自動制御方式及びそれに用いる送信装置と受信装置
US6334219B1 (en) 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
FR2725276B1 (fr) * 1994-09-29 1996-11-08 France Etat Procede et dispositif de determination de la frequence et de l'amplitude exactes d'un signal sinusoidal
US5678213A (en) * 1994-09-30 1997-10-14 Lucent Technologies Inc. Radio receiver for processing a multi-carrier signal with a large dynamic range
JPH08125562A (ja) 1994-10-24 1996-05-17 Pioneer Electron Corp マルチキャリア変調信号受信装置
FR2726417A1 (fr) * 1994-10-26 1996-05-03 Philips Electronique Lab Systeme de transmission et recepteur de signaux a repartition multiplexee de frequences orthogonales muni d'un dispositif de synchronisation de frequences
USRE42236E1 (en) 1995-02-06 2011-03-22 Adc Telecommunications, Inc. Multiuse subcarriers in multipoint-to-point communication using orthogonal frequency division multiplexing
US7280564B1 (en) 1995-02-06 2007-10-09 Adc Telecommunications, Inc. Synchronization techniques in multipoint-to-point communication using orthgonal frequency division multiplexing
US5761190A (en) * 1995-02-20 1998-06-02 Pioneer Electronic Corporation OFDM broadcast wave receiver
SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
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JP2803614B2 (ja) * 1995-12-22 1998-09-24 日本電気株式会社 移動中継装置
JPH09219692A (ja) * 1996-02-09 1997-08-19 Jisedai Digital Television Hoso Syst Kenkyusho:Kk 直交周波数分割多重伝送方式とその変調装置及び復調装置
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GB2329290B (en) * 1996-05-31 2001-04-18 Tracker Network Method of transmitting and receiving data,system and receiver therefor
JP2820143B2 (ja) * 1997-01-17 1998-11-05 日本電気株式会社 自動周波数制御方式
GB9707517D0 (en) * 1997-04-14 1997-06-04 Nds Ltd Improvements in or relating to receiver synchronisation
JP3797397B2 (ja) * 1997-05-02 2006-07-19 ソニー株式会社 受信装置および受信方法
JPH10308717A (ja) * 1997-05-02 1998-11-17 Sony Corp 受信装置および受信方法
EP1933516A3 (en) * 1997-05-02 2009-03-04 LSI Logic Corporation Demodulating video broadcast signals
JPH10313286A (ja) * 1997-05-13 1998-11-24 Sony Corp 受信装置
US6058101A (en) * 1997-06-11 2000-05-02 Industrial Technology Research Institute Synchronization method and system for a digital receiver
JP3568180B2 (ja) 1997-06-12 2004-09-22 株式会社日立国際電気 データ伝送装置
ATE208110T1 (de) * 1997-09-22 2001-11-15 Cit Alcatel Verfahren und vorrichtung zur bestimmung eines taktfehlers in einem mehrträgerübertragungssystem
KR100265735B1 (ko) * 1997-11-25 2000-09-15 윤종용 Fft윈도우위치복원과샘플링클럭제어가연동되는ofdm수신장치및그방법
SE519683C2 (sv) * 1998-05-26 2003-04-01 Nera Asa Anordning för modulering och demodulering i ett flerkanalssystem
US6507585B1 (en) 1998-05-27 2003-01-14 3Com Corporation Multi-carrier LAN adapter device using frequency domain equalizer
US6704317B1 (en) 1998-05-27 2004-03-09 3Com Corporation Multi-carrier LAN modem server
US6891887B1 (en) 1998-05-27 2005-05-10 3Com Corporation Multi-carrier LAN adapter device using interpolative equalizer
US6603811B1 (en) 1998-05-29 2003-08-05 3Com Corporation Low complexity frequency domain equalizer having fast re-lock
US6377683B1 (en) 1998-05-29 2002-04-23 3Com Corporation Low complexity frequency domain echo canceller for DMT transceivers
US7035351B1 (en) * 1998-07-24 2006-04-25 Gct Semiconductor, Inc. Automatic gain control loop apparatus
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US6859504B1 (en) 1999-06-29 2005-02-22 Sharp Laboratories Of America, Inc. Rapid settling automatic gain control with minimal signal distortion
FR2799597B1 (fr) * 1999-10-08 2004-02-20 Mitsubishi Electric Inf Tech Procede de transmission de donnees sur porteuses multiples d'un emetteur a un recepteur et recepteur prevu pour la mise en oeuvre dudit procede
US8363757B1 (en) * 1999-10-12 2013-01-29 Qualcomm Incorporated Method and apparatus for eliminating the effects of frequency offsets in a digital communication system
JP4356203B2 (ja) * 2000-07-11 2009-11-04 ソニー株式会社 復調装置及び復調方法
NZ506558A (en) * 2000-08-25 2003-04-29 Ind Res Ltd A broadband indoor communication system using ofdm
NZ509688A (en) * 2001-02-01 2003-06-30 Ind Res Ltd Maximum likelihood sychronisation (estimating time delay) for wireless digital communications system using a pilot symbol
FR2821216B1 (fr) * 2001-02-20 2003-10-24 Sagem Procede de synchronisation d'un signal d'horloge avec un signal de reference
US7324612B2 (en) * 2003-02-21 2008-01-29 Conexant, Inc. Carrier tracking circuit and method including dual numerically controlled oscillators and feedforward phase correction coefficient
RU2304359C2 (ru) * 2003-11-10 2007-08-10 Корпорация "Самсунг Электроникс" Способ частотно-временной синхронизации системы связи и устройство для его осуществления
RU2264045C2 (ru) * 2004-01-28 2005-11-10 Закрытое акционерное общество "Кодофон" Способ синхронизации сигналов и устройство для его осуществления
RU2338325C1 (ru) * 2004-09-18 2008-11-10 Самсунг Электроникс Ко., Лтд. Устройство и способ для синхронизации частоты в системе ofdm
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JP5033589B2 (ja) * 2007-11-09 2012-09-26 株式会社日立ハイテクノロジーズ 半導体ウェハの異物検査装置
FR2960363B1 (fr) * 2010-05-21 2012-05-18 Thales Sa Dispositif de transposition flexible en frequence large bande pour recepteur de telecommande satellite, et recepteur associes
RU2552180C2 (ru) * 2013-06-19 2015-06-10 Федеральное государственное казенное военное образовательное учреждение высшего профессионального образования "Военно-космическая академия имени А.Ф. Можайского" Министерства обороны Российской Федерации Способ преобразования частоты и преобразователь для его осуществления
CN107332606B (zh) * 2017-06-27 2021-01-26 杭州电子科技大学 基于双采样的leo系统差分空时正交频分复用编码方法

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Also Published As

Publication number Publication date
WO1992010043A1 (fr) 1992-06-11
EP0513313A1 (fr) 1992-11-19
CA2073777A1 (fr) 1992-06-11
NO922959L (no) 1992-07-27
JP3176623B2 (ja) 2001-06-18
NO922959D0 (no) 1992-07-27
AU9091891A (en) 1992-06-25
FR2670062A1 (fr) 1992-06-05
NO306435B1 (no) 1999-11-01
FI923426A7 (fi) 1992-07-29
JPH05504037A (ja) 1993-06-24
EP0513313B1 (fr) 1997-02-12
DE69124690T2 (de) 1997-06-05
SG46723A1 (en) 1998-02-20
FR2670062B1 (fr) 1993-11-12
AU641071B2 (en) 1993-09-09
US5313169A (en) 1994-05-17
ATE148970T1 (de) 1997-02-15
FI923426A0 (fi) 1992-07-29
DE69124690D1 (de) 1997-03-27
RU2105423C1 (ru) 1998-02-20

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