DE69527590D1 - Frequenzsynchronisierung für OFDM-System - Google Patents

Frequenzsynchronisierung für OFDM-System

Info

Publication number
DE69527590D1
DE69527590D1 DE69527590T DE69527590T DE69527590D1 DE 69527590 D1 DE69527590 D1 DE 69527590D1 DE 69527590 T DE69527590 T DE 69527590T DE 69527590 T DE69527590 T DE 69527590T DE 69527590 D1 DE69527590 D1 DE 69527590D1
Authority
DE
Germany
Prior art keywords
ofdm system
frequency synchronization
synchronization
ofdm
frequency
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
DE69527590T
Other languages
English (en)
Other versions
DE69527590T2 (de
Inventor
Flavio Daffara
Ottavio Adami
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.)
Sony Corp
Original Assignee
Koninklijke 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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of DE69527590D1 publication Critical patent/DE69527590D1/de
Application granted granted Critical
Publication of DE69527590T2 publication Critical patent/DE69527590T2/de
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
    • H04L27/2669—Details of algorithms characterised by the domain of operation
    • H04L27/2671—Time 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
    • H04L27/2647—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
    • H04L27/2678—Blind, i.e. without using known symbols using cyclostationarities, e.g. cyclic prefix or postfix

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE69527590T 1994-10-26 1995-10-16 Frequenzsynchronisierung für OFDM-System Expired - Lifetime DE69527590T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9412823A FR2726417A1 (fr) 1994-10-26 1994-10-26 Systeme de transmission et recepteur de signaux a repartition multiplexee de frequences orthogonales muni d'un dispositif de synchronisation de frequences

Publications (2)

Publication Number Publication Date
DE69527590D1 true DE69527590D1 (de) 2002-09-05
DE69527590T2 DE69527590T2 (de) 2003-02-27

Family

ID=9468244

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69527590T Expired - Lifetime DE69527590T2 (de) 1994-10-26 1995-10-16 Frequenzsynchronisierung für OFDM-System

Country Status (5)

Country Link
US (1) US5687165A (de)
EP (1) EP0709980B1 (de)
JP (1) JP3770944B2 (de)
DE (1) DE69527590T2 (de)
FR (1) FR2726417A1 (de)

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SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
GB9510127D0 (en) * 1995-05-20 1995-08-02 West End System Corp CATV Data transmission system
DE19532959A1 (de) * 1995-09-07 1997-03-13 Bosch Gmbh Robert Verfahren zum Übertragen von digitalen Daten über störbehaftete Rundfunkkanäle und Vorrichtung zum Empfang von über störbehaftete Rundfunkkanäle übermittelten digitalen Daten
US5914933A (en) * 1996-03-08 1999-06-22 Lucent Technologies Inc. Clustered OFDM communication system
US6950388B2 (en) * 1996-08-22 2005-09-27 Tellabs Operations, Inc. Apparatus and method for symbol alignment in a multi-point OFDM/DMT digital communications system
US5995483A (en) 1996-08-22 1999-11-30 Tellabs Operations, Inc. Apparatus and method for upstream clock synchronization in a multi-point OFDM/DMT digital communication system
US6118758A (en) 1996-08-22 2000-09-12 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved transmitter architecture
US6771590B1 (en) * 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
JP2818148B2 (ja) * 1996-08-23 1998-10-30 株式会社次世代デジタルテレビジョン放送システム研究所 Ｏｆｄｍ復調装置
JP3848421B2 (ja) 1997-01-31 2006-11-22 秀男 村上 離散時間信号に対する多重化装置および多重化システムと、離散時間信号に対する多重化方法
DE19742670B4 (de) * 1997-09-26 2011-08-11 Telefonaktiebolaget Lm Ericsson (Publ) Verfahren, Empfänger und Mehrträger-QAM-System zur Demodulation eines analogen Mehrträger-QAM-Signals
GB2332603B (en) * 1997-12-22 2000-07-19 Lsi Logic Corp Improvements relating to multidirectional communication systems
US6631175B2 (en) 1998-04-03 2003-10-07 Tellabs Operations, Inc. Spectrally constrained impulse shortening filter for a discrete multi-tone receiver
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
DK1068704T3 (da) 1998-04-03 2012-09-17 Tellabs Operations Inc Filter til impulssvarforkortning, med yderligere spektrale begrænsninger, til multibærebølgeoverførsel
US6795424B1 (en) * 1998-06-30 2004-09-21 Tellabs Operations, Inc. Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems
DE19833318C2 (de) * 1998-07-24 2001-08-02 Bosch Gmbh Robert Verfahren zur Übertragung von digitalen Nutzdaten
US6310926B1 (en) 1998-09-25 2001-10-30 Telefonaktiebolaget Lm Ericsson (Publ) Adjustment of the sampling frequency in a multicarrier receiver
KR100312318B1 (ko) * 1998-12-01 2001-11-05 윤종용 직교주파수분할다중/부호분할다중접속 시스템의 주파수동기 장치
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
JP2000269923A (ja) * 1999-03-19 2000-09-29 Toshiba Corp 外部装置同期機能をもつｏｆｄｍ変調器
US6952394B1 (en) * 1999-05-25 2005-10-04 Samsung Electronics Co., Ltd. Method for transmitting and receiving orthogonal frequency division multiplexing signal and apparatus therefor
US6505037B1 (en) 1999-06-29 2003-01-07 Sharp Laboratories Of America, Inc. Data unit detection including antenna diversity
US6859504B1 (en) 1999-06-29 2005-02-22 Sharp Laboratories Of America, Inc. Rapid settling automatic gain control with minimal signal distortion
FR2798542B1 (fr) * 1999-09-13 2002-01-18 France Telecom Recepteur a multiplexage par repartition en frequences orthogonales avec estimation iterative de canal et procede correspondant
US6529868B1 (en) 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
US6975585B1 (en) * 2000-07-27 2005-12-13 Conexant Systems, Inc. Slotted synchronous frequency division multiplexing for multi-drop networks
KR100398331B1 (ko) * 2001-04-16 2003-09-19 광주과학기술원 직교 주파수 분할 다중화 시스템의 신호 수신단 및 그신호 수신방법
CN1780276B (zh) * 2004-11-25 2012-01-04 都科摩（北京）通信技术研究中心有限公司 正交频分复用系统中联合时间同步和频偏估计方法及装置
JP2009198364A (ja) * 2008-02-22 2009-09-03 Fujitsu Ltd 光ファイバ伝送路の特性および光信号の品質をモニタするモニタ回路
US9143785B2 (en) 2012-10-25 2015-09-22 Allen LeRoy Limberg COFDM broadcast systems employing turbo coding

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4773085A (en) * 1987-06-12 1988-09-20 Bell Communications Research, Inc. Phase and frequency detector circuits
EP0439539B1 (de) * 1988-10-21 1994-07-20 Thomson-Csf Sender, sendeverfahren und empfänger
US5206886A (en) * 1990-04-16 1993-04-27 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
FR2670062B1 (fr) * 1990-11-30 1993-11-12 Thomson Csf Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede.
US5160900A (en) * 1992-01-21 1992-11-03 Nokia Mobile Phones Ltd. Method to speed up the training of a shift oscillator in a frequency synthesizer
FR2693861A1 (fr) 1992-07-16 1994-01-21 Philips Electronique Lab Récepteur de signaux à répartition multiplexée de fréquences orthogonales muni d'un dispositif de synchronisation de fréquences.

Also Published As

Publication number Publication date
EP0709980A1 (de) 1996-05-01
JPH08237218A (ja) 1996-09-13
JP3770944B2 (ja) 2006-04-26
DE69527590T2 (de) 2003-02-27
US5687165A (en) 1997-11-11
EP0709980B1 (de) 2002-07-31
FR2726417A1 (fr) 1996-05-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: SONY CORP., TOKIO/TOKYO, JP

8328 Change in the person/name/address of the agent

Representative=s name: MITSCHERLICH & PARTNER, PATENT- UND RECHTSANWAELTE

8320 Willingness to grant licences declared (paragraph 23)