PT1072138E - Metodo e aparelho para sincronizacao fina da frequencia em sistemas de desmodulacao de portadoras multiplas - Google Patents

Metodo e aparelho para sincronizacao fina da frequencia em sistemas de desmodulacao de portadoras multiplas

Info

Publication number
PT1072138E
PT1072138E PT98924116T PT98924116T PT1072138E PT 1072138 E PT1072138 E PT 1072138E PT 98924116 T PT98924116 T PT 98924116T PT 98924116 T PT98924116 T PT 98924116T PT 1072138 E PT1072138 E PT 1072138E
Authority
PT
Portugal
Prior art keywords
frequency
multiple carrier
fine synchronization
carrier demodulation
demodulation systems
Prior art date
Application number
PT98924116T
Other languages
English (en)
Inventor
Ernst Eberlein
Heinz Gerhauser
Albert Heuberger
Sabah Badri
Stefan Lipp
Stephan Buchholz
Original Assignee
Fraunhofer Ges Forderung Angew
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=PT1072138(E) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Fraunhofer Ges Forderung Angew filed Critical Fraunhofer Ges Forderung Angew
Publication of PT1072138E publication Critical patent/PT1072138E/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
    • 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
PT98924116T 1998-04-14 1998-04-14 Metodo e aparelho para sincronizacao fina da frequencia em sistemas de desmodulacao de portadoras multiplas PT1072138E (pt)

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
PT1072138E true PT1072138E (pt) 2003-01-31

Family

ID=8166940

Family Applications (1)

Application Number Title Priority Date Filing Date
PT98924116T PT1072138E (pt) 1998-04-14 1998-04-14 Metodo e aparelho para sincronizacao fina da frequencia em sistemas de desmodulacao de portadoras multiplas

Country Status (19)

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

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9801748L (sv) * 1998-05-18 1999-11-19 Telia Ab Förbättringar i eller som hänför sig till telekommunikationsöverföringssystem
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
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
US6963602B1 (en) * 2000-01-05 2005-11-08 Advanced Micro Devices, Inc. Digital correction method and system
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
US7295509B2 (en) 2000-09-13 2007-11-13 Qualcomm, Incorporated Signaling method in an OFDM multiple access system
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
US6633616B2 (en) * 2001-02-21 2003-10-14 Magis Networks, Inc. OFDM pilot tone tracking for wireless LAN
GB2373689A (en) * 2001-03-20 2002-09-25 Christopher James Ashton Demodulation apparatus for multi-carrier PSK signals which reduces inter-carier interference
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
TWI237450B (en) * 2002-06-07 2005-08-01 Interdigital Tech Corp System and method for a direct conversion multi-carrier processor
WO2004021616A1 (ja) 2002-08-28 2004-03-11 Fujitsu Limited 送受信装置及び送受信方法
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
WO2008023539A1 (fr) * 2006-08-21 2008-02-28 Panasonic Corporation Récepteur, circuit intégré et procédé de réception
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
ES2373240T3 (es) 2007-12-20 2012-02-01 Panasonic Corporation Señalización de canal de control usando un campo de señalización común para el formato de transporte y la versión de redundancia.
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
DE112011105986B4 (de) 2011-12-20 2024-04-25 Intel Corporation Ein orthogonaler Frequenzteilungs-Multiplex (OFDM)- Empfänger mit Phasenrauschminderung und reduzierter Latenz
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
WO2018127998A1 (ja) 2017-01-06 2018-07-12 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカ 端末、基地局及び通信方法
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
US11071064B1 (en) 2019-09-06 2021-07-20 Amazon Technologies, Inc. Dynamic low-power scheme for wireless transceivers

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4347483A (en) * 1980-07-28 1982-08-31 Zenith Radio Corporation Frequency and phase lock loop with separated AFC and phase locking
GB9020170D0 (en) * 1990-09-14 1990-10-24 Indep Broadcasting Authority Orthogonal frequency division multiplexing
FR2666184A1 (fr) * 1990-08-24 1992-02-28 Alcatel Radiotelephone Horloge a division de frequence fractionnaire et asservissement de cette horloge.
WO1995007581A1 (de) * 1993-09-10 1995-03-16 Deutsche Thomson-Brandt Gmbh Verfahren zur übertragung von referenzsignalen in einem ofdm-system
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
JP3145003B2 (ja) 1995-03-23 2001-03-12 株式会社東芝 直交周波数分割多重伝送方式とその送信装置および受信装置
US5732113A (en) * 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
EP0822682A1 (en) 1996-07-05 1998-02-04 Deutsche Thomson-Brandt Gmbh Method for the frequency correction of multicarrier signals and related apparatus
JPH1041991A (ja) 1996-07-24 1998-02-13 Nippon Telegr & Teleph Corp <Ntt> ディジタル復調回路
US6192068B1 (en) * 1996-10-03 2001-02-20 Wi-Lan Inc. Multicode spread spectrum communications system
KR100238047B1 (ko) * 1997-02-25 2000-01-15 윤종용 직교 주파수분할 다중화 전송시스템의 반송파 주파수 동기 방법 및 동기 장치

Also Published As

Publication number Publication date
CA2327785C (en) 2003-08-12
ZA983646B (en) 1998-11-24
KR20010042708A (ko) 2001-05-25
EP1072138A1 (en) 2001-01-31
DE69807945D1 (de) 2002-10-17
AU7643298A (en) 1999-11-01
ATE224119T1 (de) 2002-09-15
EA200001068A1 (ru) 2001-06-25
ES2183370T3 (es) 2003-03-16
DE69807945T2 (de) 2003-06-05
CN1301447A (zh) 2001-06-27
AP1092A (en) 2002-08-12
AP2000001927A0 (en) 2000-09-30
DK1072138T3 (da) 2002-12-16
CN1120602C (zh) 2003-09-03
BR9815808A (pt) 2001-12-11
EA002748B1 (ru) 2002-08-29
WO1999053667A1 (en) 1999-10-21
AU749394B2 (en) 2002-06-27
EP1072138B1 (en) 2002-09-11
BR9815808B1 (pt) 2012-10-30
KR100377257B1 (ko) 2003-03-26
JP3429748B2 (ja) 2003-07-22
JP2002511711A (ja) 2002-04-16
CA2327785A1 (en) 1999-10-21
TW421947B (en) 2001-02-11
HK1036713A1 (en) 2002-01-11
US7061997B1 (en) 2006-06-13

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