ES2099250T3 - Sistema para transmision y recepcion de datos digitales, receptor y transmisor para utilizacion en un sistema de este tipo. - Google Patents

Sistema para transmision y recepcion de datos digitales, receptor y transmisor para utilizacion en un sistema de este tipo.

Info

Publication number
ES2099250T3
ES2099250T3 ES92906585T ES92906585T ES2099250T3 ES 2099250 T3 ES2099250 T3 ES 2099250T3 ES 92906585 T ES92906585 T ES 92906585T ES 92906585 T ES92906585 T ES 92906585T ES 2099250 T3 ES2099250 T3 ES 2099250T3
Authority
ES
Spain
Prior art keywords
receiver
frequency
symbols
crest
transmitter
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
ES92906585T
Other languages
English (en)
Inventor
Norbert Jeanne Louis Philips
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronics NV
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 Philips Electronics NV filed Critical Philips Electronics NV
Application granted granted Critical
Publication of ES2099250T3 publication Critical patent/ES2099250T3/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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J4/00—Combined time-division and frequency-division multiplex systems
    • 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
    • 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
    • H04L27/2675—Pilot or known symbols
    • 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

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Management, Administration, Business Operations System, And Electronic Commerce (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)

Abstract

SISTEMA PARA LA RADIODIFUSION Y RECEPCION DE DATOS DIGITALES DENTRO DE CANALES DE TRANSMISION MULTIPLE DE INFORMACION POR DIVISION DE TIEMPO, AGRUPADOS EN IMAGENES, TENIENDO CADA IMAGEN SIMBOLOS MULTIPORTADORES QUE INCLUYEN; SIMBOLOS DE DATOS Y SIMBOLOS DE SISTEMA, CADA SIMBOLO COMPRENDE UN GRUPO DE PORTADORES DE TRANSMISION MULTIPLE DE INFORMACION DE FRECUENCIA ORTOGONAL, CON POSICIONES DE PORTADOR DENTRO DE UNA CUADRICULA DE FRECUENCIA CON ESPACIOS DE PORTADORES REGULARES. SE MANTIENE EN DICHO SISTEMA LA POSIBILIDAD DE UNA SINCRONIZACION PRECISA Y DINAMICA DEL OSCILADOR LOCAL DEL RECEPTOR CON EL DEL TRANSMISOR, MIENTRAS SE PERMITE QUE EL FUNCIONAMIENTO LIBRE DEL MARGEN DE TOLERANCIA DEL OSCILADOR LOCAL DEL RECEPTOR SEA MUCHO MAS AMPLIO QUE EL DEL RECEPTOR CONOCIDO, CARACTERIZANDOSE EN QUE DICHAS IMAGENES INCLUYEN SIMBOLOS SE REFERENCIA DE FRECUENCIA, TRANSPORTANDO CADA UNO INFORMACION PARA GENERAR UN VALOR DE CRESTA EN AL MENOS UNA POSICION DE CRESTA DE REFERENCIA, DENTRO DE LA CUADRICULADE FRECUENCIA, ESTANDO SEPARADA AL MENOS POR UNA POSICION DE PORTADORA DE CADA UNO DE LOS BORDES DE LA CUADRICULA DE FRECUENCIA Y POR AL MENOS DOS POSICIONES PORTADORAS DE UNA POSICION DE CRESTA DE REFERENCIA POSTERIOR EVENTUAL.
ES92906585T 1991-02-28 1992-02-27 Sistema para transmision y recepcion de datos digitales, receptor y transmisor para utilizacion en un sistema de este tipo. Expired - Lifetime ES2099250T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB919104241A GB9104241D0 (en) 1991-02-28 1991-02-28 System for broadcasting and receiving digital data,receiver and transmitter for use in such a system

Publications (1)

Publication Number Publication Date
ES2099250T3 true ES2099250T3 (es) 1997-05-16

Family

ID=10690752

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92906585T Expired - Lifetime ES2099250T3 (es) 1991-02-28 1992-02-27 Sistema para transmision y recepcion de datos digitales, receptor y transmisor para utilizacion en un sistema de este tipo.

Country Status (14)

Country Link
US (1) US5550812A (es)
EP (1) EP0573541B1 (es)
JP (1) JP3043415B2 (es)
KR (1) KR100242400B1 (es)
AT (1) ATE147562T1 (es)
AU (1) AU660965B2 (es)
CA (1) CA2101248C (es)
DE (1) DE69216591T2 (es)
DK (1) DK0573541T3 (es)
ES (1) ES2099250T3 (es)
FI (1) FI113117B (es)
GB (1) GB9104241D0 (es)
SG (1) SG44771A1 (es)
WO (1) WO1992016063A1 (es)

Families Citing this family (73)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE37802E1 (en) 1992-03-31 2002-07-23 Wi-Lan Inc. Multicode direct sequence spread spectrum
EP0606941B1 (fr) * 1993-01-13 1997-10-15 Laboratoires D'electronique Philips S.A.S. Dispositif de synchronisation d'une porteuse locale, pour système "OFDM"
DE4319769C1 (de) * 1993-06-15 1994-07-14 Grundig Emv Verfahren und Anordnung zur Einstellung der lokalen Oszillatoren eines Empfängers in einem Mehrkanalübertragungssystem
US6023491A (en) * 1994-06-21 2000-02-08 Matsushita Electric Industrail Co., Ltd. Demodulation apparatus performing different frequency control functions using separately provided oscillators
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
US6334219B1 (en) * 1994-09-26 2001-12-25 Adc Telecommunications Inc. Channel selection for a hybrid fiber coax network
JP3421880B2 (ja) * 1994-10-05 2003-06-30 ソニー株式会社 復調装置
DE4441566A1 (de) * 1994-11-23 1996-05-30 Bosch Gmbh Robert Verfahren zur digitalen Frequenzkorrektur bei Mehrträgerübertragungsverfahren
US5774450A (en) * 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
JP3158932B2 (ja) * 1995-01-27 2001-04-23 日本ビクター株式会社 信号符号化装置及び信号復号化装置
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
JP3130752B2 (ja) * 1995-02-24 2001-01-31 株式会社東芝 Ｏｆｄｍ伝送受信方式及び送受信装置
SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
FR2733869B1 (fr) * 1995-05-02 1997-07-18 France Telecom Signal multiporteuse, procede de construction d'un tel signal et procedes d'emission et de reception correspondants
JP3079950B2 (ja) * 1995-06-20 2000-08-21 松下電器産業株式会社 直交周波数分割多重変調信号の受信装置及び伝送方法
FI99252C (fi) * 1995-07-03 1997-12-29 Nokia Mobile Phones Ltd Yhdistetty radiosignaalin modulointi- ja monikäyttömenetelmä
CA2233063A1 (en) * 1995-08-31 1997-03-06 Mark J. Dapper Am compatible digital waveform demodulation using a dual fft
GB9521739D0 (en) * 1995-10-24 1996-01-03 Nat Transcommunications Ltd Decoding carriers encoded using orthogonal frequency division multiplexing
US5835487A (en) 1995-12-08 1998-11-10 Worldspace International Network, Inc. Satellite direct radio broadcast system
US5825241A (en) * 1995-12-11 1998-10-20 Delco Electronics Corporation Differential demodulator
JP2875976B2 (ja) * 1996-01-29 1999-03-31 三星電子株式会社 直交周波数分割多重の方法及び同期方法と、直交周波数分割多重用変調器及び復調器
JP3511798B2 (ja) * 1996-05-08 2004-03-29 三菱電機株式会社 ディジタル放送受信機
JPH09307526A (ja) * 1996-05-17 1997-11-28 Mitsubishi Electric Corp デジタル放送受信機
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
US6192068B1 (en) 1996-10-03 2001-02-20 Wi-Lan Inc. Multicode spread spectrum communications system
US6333922B1 (en) 1996-11-05 2001-12-25 Worldspace, Inc. Satellite payload processing system for switching uplink signals to time division multiplexed downlink signals
US6542480B1 (en) 1996-11-05 2003-04-01 Worldspace, Inc. Satellite payload processing system using polyphase demultiplexing, quadrature phase shift keying demodulation and rate alignment
US6108319A (en) * 1996-11-05 2000-08-22 Worldspace International Networks, Inc. Satellite payload processing system providing on-board rate alignment
US5864546A (en) * 1996-11-05 1999-01-26 Worldspace International Network, Inc. System for formatting broadcast data for satellite transmission and radio reception
US5867490A (en) * 1996-11-05 1999-02-02 Worldspace International Network, Inc. Direct radio broadcast receiver for providing frame synchronization and correlation for time division multiplexed transmissions
US5870390A (en) * 1996-11-05 1999-02-09 Worldspace International Network, Inc. Statellite direct radio broadcast receiver for extracting a broadcast channel and service control header from time division multiplexed transmissions
JP3666162B2 (ja) * 1997-01-31 2005-06-29 三菱電機株式会社 ディジタル放送受信機
US6130922A (en) * 1997-05-02 2000-10-10 Lsi Logic Corporation Demodulating digital video broadcast signals
DE19718492A1 (de) * 1997-05-02 1998-11-05 Bosch Gmbh Robert Verfahren zur Übertragung von Daten mit einem Multiträgerübertragungsverfahren
US6058101A (en) * 1997-06-11 2000-05-02 Industrial Technology Research Institute Synchronization method and system for a digital receiver
EP0895387A1 (de) * 1997-07-28 1999-02-03 Deutsche Thomson-Brandt Gmbh Erkennung des Übertragungsmodus eines DVB-Signales
WO1999023820A1 (en) 1997-11-03 1999-05-14 International Communications Products, Inc. Link adapter interface for upgrading existing satellite communication system for enhanced modulation and coding
EA002178B1 (ru) * 1997-11-14 2002-02-28 Уорлдспэйс Менеджмент Корпорейшн Протокол сигнализации для спутниковой системы прямого радиовещания
US6201798B1 (en) 1997-11-14 2001-03-13 Worldspace Management Corporation Signaling protocol for satellite direct radio broadcast system
US6314082B1 (en) * 1997-11-17 2001-11-06 Telefonaktiebolaget Lm Ericsson (Publ) Broadcast network selection techniques for radiocommunication systems
US6944139B1 (en) 1998-03-27 2005-09-13 Worldspace Management Corporation Digital broadcast system using satellite direct broadcast and terrestrial repeater
US6185265B1 (en) 1998-04-07 2001-02-06 Worldspace Management Corp. System for time division multiplexing broadcast channels with R-1/2 or R-3/4 convolutional coding for satellite transmission via on-board baseband processing payload or transparent payload
AU749912B2 (en) * 1998-04-14 2002-07-04 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Frame structure and frame synchronization for multicarrier systems
KR100314353B1 (ko) * 1998-04-28 2001-12-28 전주범 직교분할대역수신시스템
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
US6539063B1 (en) 1999-02-18 2003-03-25 Ibiquity Digital Corporation System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system
US6654340B1 (en) * 1999-03-31 2003-11-25 Cisco Technology, Inc. Differential OFDM using multiple receiver antennas
US6229998B1 (en) * 1999-04-12 2001-05-08 Qualcomm Inc. Method and system for detecting in-band jammers in a spread spectrum wireless base station
US6074086A (en) * 1999-04-26 2000-06-13 Intellon Corporation Synchronization of OFDM signals with improved windowing
US6269132B1 (en) * 1999-04-26 2001-07-31 Intellon Corporation Windowing function for maintaining orthogonality of channels in the reception of OFDM symbols
KR100429837B1 (ko) * 1999-09-22 2004-05-03 삼성전자주식회사 직교주파수 분할 다중화 신호의 동기화 방법 및 그 장치
US6628735B1 (en) * 1999-12-22 2003-09-30 Thomson Licensing S.A. Correction of a sampling frequency offset in an orthogonal frequency division multiplexing system
US6650617B1 (en) * 2000-02-22 2003-11-18 Thomson Licensing S.A. Reduced complexity FFT window synchronization for an orthogonal frequency division multiplexing system
GB2359705B (en) * 2000-02-28 2003-11-26 Virata Ltd xDSL sample rate compensation using phase balancing
US6956814B1 (en) 2000-02-29 2005-10-18 Worldspace Corporation Method and apparatus for mobile platform reception and synchronization in direct digital satellite broadcast system
JP2001358606A (ja) * 2000-06-14 2001-12-26 Matsushita Electric Ind Co Ltd 時分割多重方式無線装置
US6771591B1 (en) * 2000-07-31 2004-08-03 Thomson Licensing S.A. Method and system for processing orthogonal frequency division multiplexed signals
JP3988392B2 (ja) * 2001-01-24 2007-10-10 日本電気株式会社 携帯無線端末、ａｆｃ制御方法及びａｆｃ制御プログラム
FR2826208B1 (fr) * 2001-06-19 2003-12-05 Thales Sa Systeme et procede de transmission d'un signal audio ou phonie
US7035364B2 (en) * 2001-06-29 2006-04-25 Motorola, Inc. Digital receiver fast frequency and time acquisition system using a single synchronization word and method of using same
DE10157931C2 (de) 2001-11-26 2003-12-11 Siemens Ag Verfahren und Vorrichtungen zur Synchronisation von Funkstationen und zeitsynchrones Funkbussystem
KR100483462B1 (ko) * 2002-11-25 2005-04-14 삼성전자주식회사 고속 푸리에 변환 장치와, 이를 이용한 고속 푸리에 변환 방법 및 이를 갖는 직교 주파수 분할 다중 변조 방식의 수신장치
US20040218519A1 (en) * 2003-05-01 2004-11-04 Rong-Liang Chiou Apparatus and method for estimation of channel state information in OFDM receivers
KR20050040055A (ko) * 2003-10-27 2005-05-03 삼성전자주식회사 직교 주파수 분할 다중 통신 시스템에서 톤 위치를결정하기 위한 장치 및 방법
US7399509B2 (en) * 2003-12-23 2008-07-15 Kari Virtanen Thin polyethylene pressure sensitive labels
US8401503B2 (en) 2005-03-01 2013-03-19 Qualcomm Incorporated Dual-loop automatic frequency control for wireless communication
US8009775B2 (en) 2005-03-11 2011-08-30 Qualcomm Incorporated Automatic frequency control for a wireless communication system with multiple subcarriers
KR20080105883A (ko) * 2007-06-01 2008-12-04 엘지전자 주식회사 데이터 전송 방법과 수신 방법 및 프레임 구조
WO2009005333A2 (en) * 2007-07-05 2009-01-08 Lg Electronics Inc. Apparatus for transmitting and receiving a signal and a method of transmtiing and receiving a signal
EP2290893A1 (en) 2009-08-24 2011-03-02 Nxp B.V. Frequency Synchronization in OFDM Receiver using sliding Fourier Transform
CN111800248B (zh) * 2020-05-28 2023-03-14 韦臣龙 基于虚拟载波数据方式实现的通信方法和装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4199809A (en) * 1976-04-05 1980-04-22 The United States Of America As Represented By The Secretary Of The Navy Programmable data terminal set
US4301530A (en) * 1978-12-18 1981-11-17 The United States Of America As Represented By The Secretary Of The Army Orthogonal spread spectrum time division multiple accessing mobile subscriber access system
US4881245A (en) * 1983-07-01 1989-11-14 Harris Corporation Improved signalling method and apparatus
CA1210877A (en) * 1983-08-04 1986-09-02 Nec Corporation Method of synchronizing parallel channels of orthogonally multiplexed parallel data transmission system and improved automatic equalizer for use in such a transmission system
US4881241A (en) * 1988-02-24 1989-11-14 Centre National D'etudes Des Telecommunications Method and installation for digital communication, particularly between and toward moving vehicles
US5191576A (en) * 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
US5048054A (en) * 1989-05-12 1991-09-10 Codex Corporation Line probing modem
FR2658016B1 (fr) * 1990-02-06 1994-01-21 Etat Francais Cnet Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et demodulation coherente, et recepteur correspondant.
FR2658017B1 (fr) * 1990-02-06 1992-06-05 France Etat Procede de diffusion de donnees numeriques, notamment pour la radiodiffusion a haut debit vers des mobiles, a entrelacement temps-frequence et aide a l'acquisition de la commande automatique de frequence, et recepteur correspondant.
US5170413A (en) * 1990-12-24 1992-12-08 Motorola, Inc. Control strategy for reuse system assignments and handoff
FR2671923B1 (fr) * 1991-01-17 1993-04-16 France Etat Dispositif de demodulation coherente de donnees numeriques entrelacees en temps et en frequence, a estimation de la reponse frequentielle du canal de transmission et seuillage, et emetteur correspondant.

Also Published As

Publication number Publication date
US5550812A (en) 1996-08-27
WO1992016063A1 (en) 1992-09-17
CA2101248A1 (en) 1992-08-29
JP3043415B2 (ja) 2000-05-22
JPH06505377A (ja) 1994-06-16
ATE147562T1 (de) 1997-01-15
AU660965B2 (en) 1995-07-13
GB9104241D0 (en) 1991-04-17
DE69216591D1 (de) 1997-02-20
KR930703758A (ko) 1993-11-30
FI933776A (fi) 1993-08-27
AU1379092A (en) 1992-10-06
FI113117B (fi) 2004-02-27
SG44771A1 (en) 1997-12-19
KR100242400B1 (ko) 2000-02-01
EP0573541A1 (en) 1993-12-15
EP0573541B1 (en) 1997-01-08
DK0573541T3 (da) 1997-06-16
FI933776A0 (fi) 1993-08-27
CA2101248C (en) 1998-07-28
DE69216591T2 (de) 1997-07-10

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