DE69637259D1 - OFDM Kommunikationsgeräte unter Verwendung von pseudo-zufällig modulierten Referenzsymbolen - Google Patents

OFDM Kommunikationsgeräte unter Verwendung von pseudo-zufällig modulierten Referenzsymbolen

Info

Publication number
DE69637259D1
DE69637259D1 DE69637259T DE69637259T DE69637259D1 DE 69637259 D1 DE69637259 D1 DE 69637259D1 DE 69637259 T DE69637259 T DE 69637259T DE 69637259 T DE69637259 T DE 69637259T DE 69637259 D1 DE69637259 D1 DE 69637259D1
Authority
DE
Germany
Prior art keywords
pseudo
communication devices
reference symbols
ofdm communication
modulated reference
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
DE69637259T
Other languages
English (en)
Other versions
DE69637259T2 (de
Inventor
Yasuo Harada
Tomohiro Kimura
Hiroshi Oue
Yasuo Nagaishi
Hiroshi Hayashino
Yasuhiro Uno
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of DE69637259D1 publication Critical patent/DE69637259D1/de
Application granted granted Critical
Publication of DE69637259T2 publication Critical patent/DE69637259T2/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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • 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
    • H04L27/2649—Demodulators
    • H04L27/265—Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators
    • 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
    • H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe 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
    • H04L27/2657—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
    • H04L27/2662—Symbol 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
    • H04L27/2675—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
    • H04L27/2647—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
    • 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
    • H04L27/2681—Details of algorithms characterised by constraints
    • H04L27/2682—Precision
    • 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
    • H04L27/2613—Structure of the reference signals
    • H04L27/26134—Pilot insertion in the transmitter chain, e.g. pilot overlapping with data, insertion in time or frequency domain
DE69637259T 1995-01-10 1996-01-03 OFDM Kommunikationsgeräte unter Verwendung von pseudo-zufällig modulierten Referenzsymbolen Expired - Lifetime DE69637259T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP205495 1995-01-10
JP205495 1995-01-10
JP205395 1995-01-10
JP205395 1995-01-10

Publications (2)

Publication Number Publication Date
DE69637259D1 true DE69637259D1 (de) 2007-10-31
DE69637259T2 DE69637259T2 (de) 2008-06-19

Family

ID=26335363

Family Applications (3)

Application Number Title Priority Date Filing Date
DE69636683T Expired - Lifetime DE69636683T2 (de) 1995-01-10 1996-01-03 OFDM Amplituden- oder Frequenzkorrektur unter Verwendung von Piloten
DE69637259T Expired - Lifetime DE69637259T2 (de) 1995-01-10 1996-01-03 OFDM Kommunikationsgeräte unter Verwendung von pseudo-zufällig modulierten Referenzsymbolen
DE69631985T Expired - Fee Related DE69631985T2 (de) 1995-01-10 1996-01-03 Verfahren zur Übertragung von orthogonalen Frequenzmultiplexsignalen (OFDM) und Empfänger dafür

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE69636683T Expired - Lifetime DE69636683T2 (de) 1995-01-10 1996-01-03 OFDM Amplituden- oder Frequenzkorrektur unter Verwendung von Piloten

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69631985T Expired - Fee Related DE69631985T2 (de) 1995-01-10 1996-01-03 Verfahren zur Übertragung von orthogonalen Frequenzmultiplexsignalen (OFDM) und Empfänger dafür

Country Status (5)

Country Link
US (1) US5774450A (de)
EP (4) EP0722235B1 (de)
JP (1) JP4397964B2 (de)
CA (1) CA2166599C (de)
DE (3) DE69636683T2 (de)

Families Citing this family (105)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5943325A (en) * 1996-06-28 1999-08-24 Ctp Systems, Ltd. Method and apparatus for determining symbol timing in a wireless communications system
JP3289610B2 (ja) * 1996-07-31 2002-06-10 日本ビクター株式会社 Ｏｆｄｍ復調装置及びその方法
US6122246A (en) * 1996-08-22 2000-09-19 Tellabs Operations, Inc. Apparatus and method for clock synchronization 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
US6285654B1 (en) * 1996-08-22 2001-09-04 Tellabs Operations, Inc. Apparatus and method for symbol alignment in a multi-point OFDM or DMT digital communications system
US6771590B1 (en) * 1996-08-22 2004-08-03 Tellabs Operations, Inc. Communication system clock synchronization techniques
US5790514A (en) * 1996-08-22 1998-08-04 Tellabs Operations, Inc. Multi-point OFDM/DMT digital communications system including remote service unit with improved receiver architecture
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
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
JP2001527706A (ja) * 1996-10-31 2001-12-25 ディスコビジョン アソシエイツ 直交周波数分割多重を使用するデジタル受信機のシングルチップｖｌｓｉ実施
US6359938B1 (en) * 1996-10-31 2002-03-19 Discovision Associates Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing
GB2319935B (en) * 1996-11-29 2001-10-24 Daewoo Electronics Co Ltd Apparatus for correcting frequency offset in ofdm receiving system
JPH10209998A (ja) * 1997-01-20 1998-08-07 Sony Corp 復調装置
GB9701984D0 (en) * 1997-01-31 1997-03-19 Digi Media Vision Ltd Method and apparatus for recovering the amplitude and phase of an input data signal
TW465234B (en) 1997-02-18 2001-11-21 Discovision Ass Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing
KR100238047B1 (ko) * 1997-02-25 2000-01-15 윤종용 직교 주파수분할 다중화 전송시스템의 반송파 주파수 동기 방법 및 동기 장치
US6148024A (en) * 1997-03-04 2000-11-14 At&T Corporation FFT-based multitone DPSK modem
EP0869645A3 (de) * 1997-03-31 2001-05-16 Victor Company Of Japan, Ltd. Phasen- und Amplitudenkorrektur in einem Mehrträgerempfänger
JP3563231B2 (ja) * 1997-04-04 2004-09-08 株式会社デノン 周波数制御装置および方法、受信装置、ならびに、通信装置
CN1115032C (zh) * 1997-05-23 2003-07-16 皇家菲利浦电子有限公司 带可控放大器装置的接收机
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
US5991289A (en) * 1997-08-05 1999-11-23 Industrial Technology Research Institute Synchronization method and apparatus for guard interval-based OFDM signals
EP0899923A1 (de) * 1997-08-29 1999-03-03 Sony International (Europe) GmbH Übertragung von Leistungssteuersignalen in Mehrträgermodulationssystemen
EP1879343B1 (de) * 1997-09-04 2010-02-17 Sony Deutschland Gmbh Verfahren zum Empfangen und Empfänger für OFDM-Signale
US6611493B1 (en) * 1998-01-27 2003-08-26 Hitachi Denshi Kabushiki Kaisha Communication, transmission and receiving method and apparatus using orthogonal frequency division multiplexing modulation system
DE19814530A1 (de) 1998-04-01 1999-10-07 Bosch Gmbh Robert Verfahren zur digitalen Übertragung von Daten in einem drahtlosen Kommunikationsnetz und Empfangsgerät zum Empfang von nach dem Verfahren übertragenen Daten
ES2389626T3 (es) 1998-04-03 2012-10-29 Tellabs Operations, Inc. Filtro para acortamiento de respuesta al impulso, con restricciones espectrales adicionales, para transmisión de múltiples portadoras
US7440498B2 (en) 2002-12-17 2008-10-21 Tellabs Operations, Inc. Time domain equalization for discrete multi-tone systems
US6631175B2 (en) * 1998-04-03 2003-10-07 Tellabs Operations, Inc. Spectrally constrained impulse shortening filter for a discrete multi-tone receiver
JP3449984B2 (ja) 1998-04-14 2003-09-22 フラウンホッファー−ゲゼルシャフト ツァー フォルデルング ダー アンゲヴァンドテン フォルシュング イー．ヴイ． マルチ搬送波システムのためのフレーム構造およびフレーム同期
JP3480313B2 (ja) * 1998-05-26 2003-12-15 富士通株式会社 ディジタル加入者線伝送方法及びｘＤＳＬ装置
JP2000059330A (ja) * 1998-08-04 2000-02-25 Sony Corp デジタル放送の受信機
JP2000115116A (ja) * 1998-10-07 2000-04-21 Nippon Columbia Co Ltd 直交周波数分割多重信号発生装置、直交周波数分割多重信号発生方法及び通信装置
US6473393B1 (en) * 1998-12-18 2002-10-29 At&T Corp. Channel estimation for OFDM systems with transmitter diversity
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
WO2000055917A1 (de) 1999-03-17 2000-09-21 eupec Europäische Gesellschaft für Leistungshalbleiter mbH & Co. KG Leistungshalbleitermodul
US6577598B1 (en) * 1999-04-07 2003-06-10 Legerity Methods and apparatus for channel adaptation in a DMT based system
US6442173B1 (en) 1999-04-07 2002-08-27 Legerity Timing recovery scheme for a discrete multitone transmission system
GB2349285B (en) * 1999-04-19 2003-02-12 Oak Technology Inc Signal correction
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
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
WO2000077962A1 (en) * 1999-06-11 2000-12-21 Templex Technology, Inc. Communication systems and apparatus with synchronous orthogonal coding
US6778102B1 (en) 1999-06-11 2004-08-17 Intel Corporation Communication system and apparatus with synchronous orthogonal coding
US6940933B1 (en) 1999-06-23 2005-09-06 Cingular Wireless Ii, Llc Apparatus and method for synchronization in a multiple-carrier communications system by observing a phase-frequency relationship of a plurality of pilot signals
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
US6389087B1 (en) 1999-06-23 2002-05-14 At&T Wireless Services, Inc. Apparatus and method for synchronization in a multiple-carrier communication system by observing energy within a guard band
US6961393B1 (en) * 1999-07-14 2005-11-01 Lucent Technologies Inc. In-band-on-channel (IBOC) system and methods of operation using orthogonal frequency division multiplexing (OFDM) with timing and frequency offset correction
DE19944495C2 (de) * 1999-09-17 2002-01-03 Bosch Gmbh Robert Verfahren zum Empfang von Funksignalen über einen Funkkanal
JP2001103033A (ja) * 1999-09-30 2001-04-13 Hitachi Denshi Ltd データ伝送装置
US6631143B1 (en) * 1999-11-12 2003-10-07 Lucent Technologies Inc. Methods and apparatus for frame synchronization in a digital audio broadcasting system
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
US6711221B1 (en) 2000-02-16 2004-03-23 Thomson Licensing S.A. Sampling offset correction in an orthogonal frequency division multiplexing system
US6704374B1 (en) 2000-02-16 2004-03-09 Thomson Licensing S.A. Local oscillator frequency correction in an orthogonal frequency division multiplexing system
US6529868B1 (en) * 2000-03-28 2003-03-04 Tellabs Operations, Inc. Communication system noise cancellation power signal calculation techniques
US6765623B1 (en) 2000-04-18 2004-07-20 Conexant Systems, Inc. Method and apparatus for correcting phase imbalance in received in-phase and quadrature signals
WO2001097478A2 (en) * 2000-06-13 2001-12-20 At & T Wireless Services, Inc. Frame synchronization in a multicarrier communication system
JP4484355B2 (ja) * 2000-11-22 2010-06-16 富士通マイクロエレクトロニクス株式会社 復調装置、放送システム及び放送受信装置
WO2003028255A2 (en) * 2001-09-26 2003-04-03 General Atomics Method and apparatus for data transfer using a time division multiple frequency scheme
US7236464B2 (en) * 2001-09-26 2007-06-26 General Atomics Flexible method and apparatus for encoding and decoding signals using a time division multiple frequency scheme
US7342973B2 (en) * 2001-09-26 2008-03-11 General Atomics Method and apparatus for adapting multi-band ultra-wideband signaling to interference sources
US7321601B2 (en) * 2001-09-26 2008-01-22 General Atomics Method and apparatus for data transfer using a time division multiple frequency scheme supplemented with polarity modulation
US7609608B2 (en) * 2001-09-26 2009-10-27 General Atomics Method and apparatus for data transfer using a time division multiple frequency scheme with additional modulation
US7072411B1 (en) * 2001-12-04 2006-07-04 Cisco Technology, Inc. Computation reduction in OFDM system using frequency domain processing
WO2003071682A2 (en) * 2002-02-20 2003-08-28 General Atomics Flexible method and apparatus for encoding and decoding signals using a time division multiple frequency scheme
WO2004008671A1 (ja) * 2002-07-16 2004-01-22 Matsushita Electric Industrial Co., Ltd. 通信方法およびそれを用いた送信装置と受信装置
EP1650891B1 (de) * 2003-07-29 2011-05-04 Fujitsu Limited Pilot-Multiplex-Verfahren und Sendeeinrichtung für einem OFDM-System
US7098845B2 (en) * 2004-05-18 2006-08-29 M/A-Com, Inc. Apparatus for generating an integrator timing reference from a local oscillator signal
KR100608540B1 (ko) 2004-11-29 2006-08-03 한국전자통신연구원 직교 주파수 분할 다중화 시스템에서의 자동 이득 조정장치
US20060217970A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for noise reduction
US20060217983A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for injecting comfort noise in a communications system
US20060217972A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for modifying an encoded signal
US20060217988A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for adaptive level control
US20070160154A1 (en) * 2005-03-28 2007-07-12 Sukkar Rafid A Method and apparatus for injecting comfort noise in a communications signal
US20060215683A1 (en) * 2005-03-28 2006-09-28 Tellabs Operations, Inc. Method and apparatus for voice quality enhancement
US8730877B2 (en) 2005-06-16 2014-05-20 Qualcomm Incorporated Pilot and data transmission in a quasi-orthogonal single-carrier frequency division multiple access system
US8594252B2 (en) * 2005-08-22 2013-11-26 Qualcomm Incorporated Interference cancellation for wireless communications
US8611305B2 (en) 2005-08-22 2013-12-17 Qualcomm Incorporated Interference cancellation for wireless communications
US9014152B2 (en) * 2008-06-09 2015-04-21 Qualcomm Incorporated Increasing capacity in wireless communications
US9071344B2 (en) * 2005-08-22 2015-06-30 Qualcomm Incorporated Reverse link interference cancellation
US8630602B2 (en) * 2005-08-22 2014-01-14 Qualcomm Incorporated Pilot interference cancellation
US8743909B2 (en) * 2008-02-20 2014-06-03 Qualcomm Incorporated Frame termination
WO2007052456A1 (ja) 2005-10-31 2007-05-10 Pioneer Corporation Ａｍ受信装置及びａｍ受信方法
US20070256025A1 (en) * 2006-04-28 2007-11-01 Vincent Yen Mobile application menu system
US7898983B2 (en) * 2007-07-05 2011-03-01 Qualcomm Incorporated Methods and apparatus supporting traffic signaling in peer to peer communications
US8385317B2 (en) * 2007-07-06 2013-02-26 Qualcomm Incorporated Methods and apparatus supporting multiple timing synchronizations corresponding to different communications peers
US8601156B2 (en) * 2007-07-06 2013-12-03 Qualcomm Incorporated Methods and apparatus related to peer discovery and/or paging in peer to peer wireless communications
US8599823B2 (en) * 2007-07-06 2013-12-03 Qualcomm Incorporated Communications methods and apparatus related to synchronization with respect to a peer to peer timing structure
US8385316B2 (en) * 2007-07-06 2013-02-26 Qualcomm Incorporated Methods and apparatus related to peer to peer communications timing structure
US9237515B2 (en) * 2008-08-01 2016-01-12 Qualcomm Incorporated Successive detection and cancellation for cell pilot detection
US9277487B2 (en) 2008-08-01 2016-03-01 Qualcomm Incorporated Cell detection with interference cancellation
US20100097955A1 (en) * 2008-10-16 2010-04-22 Qualcomm Incorporated Rate determination
US9160577B2 (en) * 2009-04-30 2015-10-13 Qualcomm Incorporated Hybrid SAIC receiver
US8787509B2 (en) * 2009-06-04 2014-07-22 Qualcomm Incorporated Iterative interference cancellation receiver
CN101909193B (zh) * 2009-06-05 2012-02-08 清华大学 基于dtmb标准的嵌入多业务的发送方法及其装置
US8831149B2 (en) * 2009-09-03 2014-09-09 Qualcomm Incorporated Symbol estimation methods and apparatuses
EP2299588B1 (de) * 2009-09-11 2012-12-19 Stichting IMEC Nederland Empfänger mit verringertem Rauschen
ES2720629T3 (es) 2009-11-27 2019-07-23 Qualcomm Inc Mayor capacidad en comunicaciones inalámbricas
KR101363016B1 (ko) 2009-11-27 2014-02-13 퀄컴 인코포레이티드 무선 통신들에서의 용량 증가
EP2566119A1 (de) * 2011-08-29 2013-03-06 Panasonic Corporation Generalisierte gedrehte Konstellationen zur Zeitfrequenzteilung
IL222786A (en) 2012-11-01 2016-09-29 Elta Systems Ltd Enable Boost to Downlink channels on a cellular communication system
WO2014188414A1 (en) 2013-05-23 2014-11-27 Elta Systems Ltd. Receiver, system and method for frequency diversity communications using beacon and methods useful in conjunction therewith
WO2014188413A1 (en) * 2013-05-23 2014-11-27 Elta Systems Ltd. Add-on apparatus for synchronization of frequency diversity communications and methods useful in conjunction therewith
WO2014188415A1 (en) 2013-05-23 2014-11-27 Elta Systems Ltd. Add-on apparatus for channel compensation of frequency diversity communications and methods useful in conjunction therewith
DE102014226077A1 (de) * 2014-12-16 2016-06-16 Robert Bosch Gmbh Verfahren zum Erkennen eines Arbeitsbereichs eines autonomen Arbeitsgeräts sowie ein Arbeitsgerät

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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.
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.
SG44771A1 (en) * 1991-02-28 1997-12-19 Philips Electronics Nv System for broadcasting and receiving digital data receiver and transmitter for use in such system
JPH05167633A (ja) * 1991-12-12 1993-07-02 Nippon Hoso Kyokai <Nhk> ディジタル伝送方式
JP2904986B2 (ja) * 1992-01-31 1999-06-14 日本放送協会 直交周波数分割多重ディジタル信号送信装置および受信装置
FR2690029B1 (fr) * 1992-04-08 1995-03-31 France Telecom Procédé de transmission de données numériques de radiomessagerie, et récepteur de radiomessagerie correspondant.
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.
SE500986C2 (sv) * 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
JP3139909B2 (ja) * 1994-03-15 2001-03-05 株式会社東芝 階層的直交周波数多重伝送方式および送受信装置
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
US5682376A (en) * 1994-12-20 1997-10-28 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor

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EP1617613B8 (de) 2007-12-26
DE69631985D1 (de) 2004-05-06
JP2009071883A (ja) 2009-04-02
DE69636683T2 (de) 2007-09-06
US5774450A (en) 1998-06-30
JP4397964B2 (ja) 2010-01-13
EP0722235A3 (de) 2000-09-13
CA2166599A1 (en) 1996-07-11
EP1429509A3 (de) 2004-06-30
DE69636683D1 (de) 2006-12-14
EP1848170B8 (de) 2014-02-19
EP1429509A2 (de) 2004-06-16
EP0722235A2 (de) 1996-07-17
DE69637259T2 (de) 2008-06-19
EP1617613A3 (de) 2006-01-25
EP0722235B1 (de) 2004-03-31
EP1617613A2 (de) 2006-01-18
EP1848170B1 (de) 2013-09-18
EP1617613B1 (de) 2007-09-19
DE69631985T2 (de) 2005-03-31
EP1848170A3 (de) 2011-11-02
EP1429509B1 (de) 2006-11-02
CA2166599C (en) 1999-06-01
EP1848170A2 (de) 2007-10-24

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