ZA983646B - Method and apparatus for fine frequency synchronization in milti-carrier demodulation systems - Google Patents

Method and apparatus for fine frequency synchronization in milti-carrier demodulation systems

Info

Publication number
ZA983646B
ZA983646B ZA983646A ZA983646A ZA983646B ZA 983646 B ZA983646 B ZA 983646B ZA 983646 A ZA983646 A ZA 983646A ZA 983646 A ZA983646 A ZA 983646A ZA 983646 B ZA983646 B ZA 983646B
Authority
ZA
South Africa
Prior art keywords
milti
frequency synchronization
fine frequency
carrier demodulation
demodulation systems
Prior art date
Application number
ZA983646A
Other languages
English (en)
Inventor
Ernst Eberlein
Sabah Badri
Stefan Lipp
Stephan Buchholz
Albert Heuberger
Heinz Gerhaeuser
Original Assignee
Fraunhofer Ges Forschung
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8166940&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ZA983646(B) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of ZA983646B publication Critical patent/ZA983646B/xx

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
    • 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
    • H04L27/266—Fine or fractional frequency offset determination and 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
ZA983646A 1998-04-14 1998-04-30 Method and apparatus for fine frequency synchronization in milti-carrier demodulation systems ZA983646B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/002184 WO1999053667A1 (en) 1998-04-14 1998-04-14 Method and apparatus for fine frequency synchronization in multi-carrier demodulation systems

Publications (1)

Publication Number Publication Date
ZA983646B true ZA983646B (en) 1998-11-24

Family

ID=8166940

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA983646A ZA983646B (en) 1998-04-14 1998-04-30 Method and apparatus for fine frequency synchronization in milti-carrier demodulation systems

Country Status (19)

Country Link
US (1) US7061997B1 (ja)
EP (1) EP1072138B1 (ja)
JP (1) JP3429748B2 (ja)
KR (1) KR100377257B1 (ja)
CN (1) CN1120602C (ja)
AP (1) AP1092A (ja)
AT (1) ATE224119T1 (ja)
AU (1) AU749394B2 (ja)
BR (1) BR9815808B1 (ja)
CA (1) CA2327785C (ja)
DE (1) DE69807945T2 (ja)
DK (1) DK1072138T3 (ja)
EA (1) EA002748B1 (ja)
ES (1) ES2183370T3 (ja)
HK (1) HK1036713A1 (ja)
PT (1) PT1072138E (ja)
TW (1) TW421947B (ja)
WO (1) WO1999053667A1 (ja)
ZA (1) ZA983646B (ja)

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WO2000079750A1 (en) * 1999-06-23 2000-12-28 At & T Wireless Services, Inc. Apparatus and method for synchronization in a multiple-carrier communication system by observing a plurality of synchronization indicators
EP1051005A3 (en) * 1999-05-07 2004-01-21 Alcatel Separation of original and image spectra of a multicarrier signal, together with a signal structure for facilitating the separation

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FR2814302B1 (fr) * 2000-09-20 2003-02-07 France Telecom Signal multiporteuse a pilotes repartis concu pour limiter l'interference, procede de construction d'un signal, procede de reception, recepteur et dispositif d'emission correspondants
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US6985531B2 (en) * 2001-07-13 2006-01-10 Cyntrust Communications, Inc. Dual domain differential encoder/decoder
US6704372B2 (en) * 2001-09-18 2004-03-09 Broadlogic Network Technologies Inc. Digital implementation of multi-channel demodulators
JP4152944B2 (ja) * 2002-06-07 2008-09-17 インターデイジタル テクノロジー コーポレーション ダイレクトコンバージョンマルチキャリアプロセッサのためのシステムおよび方法
EP1542384A4 (en) * 2002-08-28 2007-06-20 Fujitsu Ltd TRANSMITTING / RECEIVING APPARATUS AND TRANSMITTING / RECEIVING METHOD
CN1330193C (zh) * 2003-11-20 2007-08-01 中兴通讯股份有限公司 一种用于差分偏移四相键控解调器的位同步装置
JP2005151481A (ja) 2003-11-20 2005-06-09 Fujitsu Ltd 送信方法及び送信装置
CN100433745C (zh) * 2004-05-21 2008-11-12 中兴通讯股份有限公司 一种п/4四相差分相移键控调制方式的接收频率补偿方法
US7570696B2 (en) * 2004-06-25 2009-08-04 Intel Corporation Multiple input multiple output multicarrier communication system and methods with quantized beamforming feedback
KR100579526B1 (ko) 2005-02-18 2006-05-15 삼성전자주식회사 샘플링주파수 오프셋 보상방법 및 이를 적용한 ｏｆｄｍ 수신장치
US7830983B2 (en) * 2005-03-01 2010-11-09 Delphi Technologies, Inc. Method to minimize degradation in a D-MPSK hierarchical modulation system
US7773697B2 (en) * 2005-03-23 2010-08-10 Delphi Technologies, Inc. Method to demodulate amplitude offsets in a differential modulation system
JP4699113B2 (ja) 2005-07-05 2011-06-08 パナソニック株式会社 マルチキャリア通信装置、及びマルチキャリア通信方法
DE602006009541D1 (de) * 2005-10-26 2009-11-12 France Telecom Verfahren zum Senden eines Mehrträgersignals, das für die Begrenzung von störungen ausgelegt ist, Signal, Emssionseinrichtung, Empfangsverfahren und Einrichtung und entsprechende Computerprogramme
US8275056B2 (en) * 2006-08-21 2012-09-25 Panasonic Corporation Receiver, integrated circuit, and reception method
CN101207594B (zh) * 2006-12-21 2010-12-15 鼎芯通讯（上海）有限公司 一种利用能量检测技术实现频率粗同步的方法
KR100891267B1 (ko) * 2007-01-11 2009-03-30 성균관대학교산학협력단 무선통신시스템을 위한 훈련 시퀀스
EP1993249B1 (de) * 2007-05-15 2016-11-09 Rohde & Schwarz GmbH & Co. KG Verfahren und Vorrichtung zur Ermittlung einer ganzzahligen Trägerfrequenzabweichung in einem OFDM-Übertragungssystem mittels Auswertung unterschiedlicher Modulationswertigkeiten verschiedener Subträgergruppen
EP2383920B1 (en) 2007-12-20 2014-07-30 Optis Wireless Technology, LLC Control channel signaling using a common signaling field for transport format and redundancy version
US20100183060A1 (en) * 2009-01-19 2010-07-22 Electronics And Telecommunications Research Institute Method and apparatus of frequency offset-free frame synchronization for high order qam signals in modem apparatus
US8279975B2 (en) * 2009-12-14 2012-10-02 Motorola Solutions, Inc. Method to suppress undesired sidebands in a receiver
WO2013095353A1 (en) 2011-12-20 2013-06-27 Intel Corporation An orthogonal frequency division multiplex (ofdm) receiver with phase noise mitigation and reduced latency
WO2013136716A1 (ja) * 2012-03-14 2013-09-19 日本電気株式会社 光位相偏差・光搬送波周波数偏差補償装置および光位相偏差・光搬送波周波数偏差補償方法
US9025762B2 (en) * 2012-10-23 2015-05-05 Cisco Technology, Inc. System and method for clock synchronization of acoustic echo canceller (AEC) with different sampling clocks for speakers and microphones
US9413575B2 (en) 2013-03-15 2016-08-09 Echelon Corporation Method and apparatus for multi-carrier modulation (MCM) packet detection based on phase differences
US9363128B2 (en) * 2013-03-15 2016-06-07 Echelon Corporation Method and apparatus for phase-based multi-carrier modulation (MCM) packet detection
KR101822763B1 (ko) * 2013-08-30 2018-01-26 프라운호퍼 게젤샤프트 쭈르 푀르데룽 데어 안겐반텐 포르슝 에. 베. 일정한 엔벨로프를 가진 신호를 전송하기 위한 방법 및 장치
CN104639485B (zh) * 2013-11-12 2019-01-04 联咏科技股份有限公司 载波频率偏移校正方法与载波频率偏移校正系统
US10924239B2 (en) * 2017-01-06 2021-02-16 Panasonic Intellectual Property Corporation Of America Terminal, base station, and communication method for reference signals with phase shift indexes
CN106953826B (zh) * 2017-04-12 2020-07-31 广西师范大学 一种ofdm信号差分接收方法
US10009202B1 (en) 2017-08-14 2018-06-26 International Business Machines Corporation Direct RF demodulation
CN108234376B (zh) * 2017-12-05 2021-08-13 深圳市锐能微科技有限公司 无线数据通信方法及装置
US11082270B1 (en) * 2019-09-06 2021-08-03 Amazon Technologies, Inc. Signal quality in received wireless signals in the phase domain of shift keying demodulation

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JPH1041991A (ja) 1996-07-24 1998-02-13 Nippon Telegr & Teleph Corp <Ntt> ディジタル復調回路
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1051005A3 (en) * 1999-05-07 2004-01-21 Alcatel Separation of original and image spectra of a multicarrier signal, together with a signal structure for facilitating the separation
WO2000079750A1 (en) * 1999-06-23 2000-12-28 At & T Wireless Services, Inc. Apparatus and method for synchronization in a multiple-carrier communication system by observing a plurality of synchronization indicators
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

Also Published As

Publication number Publication date
EA200001068A1 (ru) 2001-06-25
AU7643298A (en) 1999-11-01
TW421947B (en) 2001-02-11
ES2183370T3 (es) 2003-03-16
CN1120602C (zh) 2003-09-03
US7061997B1 (en) 2006-06-13
EP1072138B1 (en) 2002-09-11
AP1092A (en) 2002-08-12
CN1301447A (zh) 2001-06-27
DE69807945D1 (de) 2002-10-17
EP1072138A1 (en) 2001-01-31
DK1072138T3 (da) 2002-12-16
AP2000001927A0 (en) 2000-09-30
PT1072138E (pt) 2003-01-31
KR100377257B1 (ko) 2003-03-26
DE69807945T2 (de) 2003-06-05
WO1999053667A1 (en) 1999-10-21
EA002748B1 (ru) 2002-08-29
BR9815808B1 (pt) 2012-10-30
ATE224119T1 (de) 2002-09-15
HK1036713A1 (en) 2002-01-11
JP2002511711A (ja) 2002-04-16
CA2327785A1 (en) 1999-10-21
AU749394B2 (en) 2002-06-27
JP3429748B2 (ja) 2003-07-22
BR9815808A (pt) 2001-12-11
CA2327785C (en) 2003-08-12
KR20010042708A (ko) 2001-05-25

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