BR0100531A - Correção de desvio de amostragem em um sistema de multiplexação de divisão de frequência ortogonal - Google Patents

Correção de desvio de amostragem em um sistema de multiplexação de divisão de frequência ortogonal

Info

Publication number
BR0100531A
BR0100531A BR0100531-6A BR0100531A BR0100531A BR 0100531 A BR0100531 A BR 0100531A BR 0100531 A BR0100531 A BR 0100531A BR 0100531 A BR0100531 A BR 0100531A
Authority
BR
Brazil
Prior art keywords
frequency division
division multiplexing
orthogonal frequency
correction
multiplexing system
Prior art date
Application number
BR0100531-6A
Other languages
English (en)
Inventor
Maxim B Belotserkovsky
Louis Robert Litwin Jr
Original Assignee
Thomson Licensing Sa
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 Thomson Licensing Sa filed Critical Thomson Licensing Sa
Publication of BR0100531A publication Critical patent/BR0100531A/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
    • H04L27/2662—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
    • H04L27/2657—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
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

"CORREçãO DE DESVIO DE AMOSTRAGEM EM UM SISTEMA DE MULTIPLEXAçãO DE DIVISãO DE FREQuêNCIA ORTOGONAL" Um receptor de Multiplexação de Divisão de Freq³ência Ortogonal (OFDM) detecta e corrige desvios de amostragem no domínio de tempo. O receptor de OFDM amostra em sobreposição (62) uma seq³ência ou símbolo de treinamento em um sinal de OFDM recebido, correlaciona (64) a seq³ência de treinamento amostrada em sobreposição a uma cópia armazenada
BR0100531-6A 2000-02-16 2001-02-14 Correção de desvio de amostragem em um sistema de multiplexação de divisão de frequência ortogonal BR0100531A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/505,159 US6711221B1 (en) 2000-02-16 2000-02-16 Sampling offset correction in an orthogonal frequency division multiplexing system

Publications (1)

Publication Number Publication Date
BR0100531A true BR0100531A (pt) 2001-10-02

Family

ID=24009259

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0100531-6A BR0100531A (pt) 2000-02-16 2001-02-14 Correção de desvio de amostragem em um sistema de multiplexação de divisão de frequência ortogonal

Country Status (6)

Country Link
US (1) US6711221B1 (pt)
EP (2) EP1892912A1 (pt)
JP (1) JP4920828B2 (pt)
KR (1) KR100756973B1 (pt)
CN (2) CN1309484B (pt)
BR (1) BR0100531A (pt)

Families Citing this family (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100397353B1 (ko) * 2001-02-07 2003-09-13 광주과학기술원 Ｏｆｄｍ 시스템용 원-탭 등화기뱅크의 신호왜곡 보상방법
US8619922B1 (en) 2002-02-04 2013-12-31 Marvell International Ltd. Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise
US7218691B1 (en) * 2001-03-05 2007-05-15 Marvell International Ltd. Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset
US7027530B2 (en) * 2001-04-11 2006-04-11 Atheros Communications, Inc. Method and apparatus for maximizing receiver performance utilizing mid-packet gain changes
US8498368B1 (en) 2001-04-11 2013-07-30 Qualcomm Incorporated Method and system for optimizing gain changes by identifying modulation type and rate
US6959050B2 (en) * 2001-06-15 2005-10-25 Motorola, Inc. Method and apparatus for synchronizing an OFDM signal
WO2003003235A1 (en) 2001-06-27 2003-01-09 4 Media, Inc. Improved media delivery platform
US7203255B2 (en) * 2001-09-24 2007-04-10 Atheros Communications, Inc. Method and system to implement non-linear filtering and crossover detection for pilot carrier signal phase tracking
US7103116B2 (en) * 2001-09-24 2006-09-05 Atheros Communications, Inc. Detection of a false detection of a communication packet
JP3607238B2 (ja) * 2001-10-22 2005-01-05 株式会社東芝 Ｏｆｄｍ信号受信システム
CN100461656C (zh) * 2001-12-20 2009-02-11 北京六合万通微电子技术有限公司 同步信号检测电路装置及其该装置检测同步信号的检测方法
KR20030090389A (ko) * 2002-05-23 2003-11-28 주식회사 신영텔레콤 직교주파수분할 다중방식을 사용하는 무선랜 시스템의주파수옵셋 동기획득 방법
US7116731B2 (en) * 2002-06-03 2006-10-03 Vixs, Inc. Method and apparatus for adjusting symbol timing and/or symbol positioning of a receive burst of data within a radio receiver
US7346131B2 (en) * 2002-07-10 2008-03-18 Zoran Corporation System and method for pre-FFT OFDM fine synchronization
DE10239810A1 (de) * 2002-08-29 2004-03-11 Siemens Ag Verfahren und Sendeeinrichtung zum Übertragen von Daten in einem Mehrträgersystem
KR100553544B1 (ko) * 2002-08-31 2006-02-20 삼성탈레스 주식회사 버스트 직교 주파수분할 다중 전송 시스템에서 주파수 오프셋 추정 및 채널 등화방법
JP4145240B2 (ja) * 2003-12-26 2008-09-03 三洋電機株式会社 ダイバーシチ受信方法および装置
US7426251B1 (en) * 2004-02-03 2008-09-16 Xilinx, Inc. High speed transceiver operable to receive lower data rate transmissions
US7426252B1 (en) 2004-02-03 2008-09-16 Xilinx, Inc. High speed transceiver receiving lower rate data
US7472152B1 (en) 2004-08-02 2008-12-30 The United States Of America As Represented By The Secretary Of The Air Force Accommodating fourier transformation attenuation between transform term frequencies
KR100665004B1 (ko) * 2004-12-17 2007-01-09 삼성전기주식회사 심벌 동기화 회로를 구비한 수신 장치
US7532645B1 (en) 2005-01-14 2009-05-12 Xilinx, Inc. Receiver operable to receive data at a lower data rate
KR100605109B1 (ko) * 2005-01-18 2006-07-28 삼성전자주식회사 직교 주파수분할 다중화 시스템에서 과표본화를 이용한신호대 잡음비 최적화 방법 및 장치
US7720162B2 (en) * 2005-03-10 2010-05-18 Qualcomm Incorporated Partial FFT processing and demodulation for a system with multiple subcarriers
US7756005B2 (en) * 2005-03-11 2010-07-13 Qualcomm Incorporated Coarse timing/frame acquisition of OFDM system using time division multiplexed pilot symbol
KR100699490B1 (ko) * 2005-08-22 2007-03-26 삼성전자주식회사 샘플링 주파수 오프셋 추정방법 및 이 방법이 적용되는ｏｆｄｍ 시스템
US7675846B2 (en) * 2006-06-23 2010-03-09 Telefonaktiebolaget L M Ericsson (Publ) Method and system for using the synchronization channel to obtain measurements in a cellular communications system
JP2009010754A (ja) 2007-06-28 2009-01-15 Naoki Suehiro 並列サンプリング装置、並列サンプリング方法、受信装置及び受信方法
IL203785A (en) 2007-09-12 2014-07-31 Qualcomm Inc Devices to increase capacitance and methods for wireless communication
EP2201735B1 (fr) * 2007-09-14 2012-01-25 France Telecom Synchronisation trame dans un systeme de communication ofdm
US8817934B2 (en) 2010-07-28 2014-08-26 Qualcomm Incorporated System and method for synchronization tracking in an in-band modem
CN103166898B (zh) * 2013-03-29 2015-11-18 东南大学 一种OFDM系统中基于周期Zadoff-Chu序列精确时延跟踪方法
GB2532233A (en) * 2014-11-12 2016-05-18 Sony Corp Transmitter and receiver and methods of transmitting and receiving
GB2539018B (en) * 2015-06-03 2019-11-06 Imagination Tech Ltd Sampling frequency offset calculation
US9813267B1 (en) 2016-05-27 2017-11-07 Nxp Usa, Inc. Communicaton unit, circuit for quadrature sampling error estimation and compensation and method therefor
WO2018141932A1 (en) * 2017-02-06 2018-08-09 Telefonaktiebolaget Lm Ericsson (Publ) Systems and methods for minimizing performance impact from known signal distortions
CN108737318B (zh) * 2018-07-19 2020-10-13 中国人民解放军战略支援部队信息工程大学 基于信号结构特性的ofdm信号识别方法及系统
US12075417B2 (en) * 2019-03-13 2024-08-27 Lg Electronics Inc. Method for controlling plurality of antenna remote units in sidelink-supporting wireless communication system, and device therefor
CN112583571B (zh) * 2019-09-30 2024-07-23 深圳市中兴微电子技术有限公司 一种信号的采样方法及装置
CN114374500B (zh) * 2020-10-15 2024-09-03 瑞昱半导体股份有限公司 能够准确估计讯号时偏的接收机电路及方法
EP4047893A1 (en) * 2021-02-23 2022-08-24 Nokia Solutions and Networks Oy An equalizer and an equalizer training unit for data-dependent distortion compensation

Family Cites Families (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3333714A1 (de) * 1983-09-17 1985-04-04 Standard Elektrik Lorenz Ag, 7000 Stuttgart Schaltungsanordnung zur rahmen- und phasensynchronisation eines empfangsseitigen abtasttaktes
GB2206267B (en) * 1987-06-24 1991-09-25 Plessey Co Plc Novel correlator for synchronisation detection
SE500986C2 (sv) 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
US5444697A (en) 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
DE4330672A1 (de) * 1993-09-10 1995-03-16 Thomson Brandt Gmbh Verfahren zur ]bertragung von digitalisierten Fernseh- und/oder Tonrundfunksignalen
JP3041175B2 (ja) 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
EP0684708B1 (en) 1993-12-15 2005-10-26 Ntt Mobile Communications Network Inc. Adaptive equalizer
US5774450A (en) 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
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
JPH08265292A (ja) * 1995-03-22 1996-10-11 Toshiba Corp Ｏｆｄｍ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
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
US5790516A (en) 1995-07-14 1998-08-04 Telefonaktiebolaget Lm Ericsson Pulse shaping for data transmission in an orthogonal frequency division multiplexed system
JP2802255B2 (ja) * 1995-09-06 1998-09-24 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 直交周波数分割多重伝送方式及びそれを用いる送信装置と受信装置
JPH09130362A (ja) 1995-10-30 1997-05-16 Sony Corp 受信装置および受信方法
US5732113A (en) 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
JP3726857B2 (ja) 1997-05-02 2005-12-14 ソニー株式会社 受信装置および受信方法
KR100265735B1 (ko) 1997-11-25 2000-09-15 윤종용 Fft윈도우위치복원과샘플링클럭제어가연동되는ofdm수신장치및그방법
WO1999053665A1 (en) * 1998-04-14 1999-10-21 Fraunhnofer-Gesellschaft Zur Förderung Der Angewand Ten Forschung E.V. Frame structure and frame synchronization for multicarrier systems
FI105506B (fi) * 1998-04-30 2000-08-31 Nokia Networks Oy Vahvistimen linearisointimenetelmä ja vahvistinjärjestely
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
US6074086A (en) * 1999-04-26 2000-06-13 Intellon Corporation Synchronization of OFDM signals with improved windowing
US6546056B1 (en) * 1999-05-28 2003-04-08 3Com Corporation Timing recovery in a multi-tone modem
US6459745B1 (en) * 1999-09-23 2002-10-01 The United States Of America As Represented By The Secretary Of The Navy Frequency/timing recovery circuit for orthogonal frequency division multiplexed signals

Also Published As

Publication number Publication date
KR100756973B1 (ko) 2007-09-07
US6711221B1 (en) 2004-03-23
EP1139624A3 (en) 2004-06-16
CN1309484B (zh) 2011-01-19
EP1892912A1 (en) 2008-02-27
KR20010082635A (ko) 2001-08-30
EP1139624B1 (en) 2012-07-25
CN101039302A (zh) 2007-09-19
CN1309484A (zh) 2001-08-22
JP4920828B2 (ja) 2012-04-18
EP1139624A2 (en) 2001-10-04
JP2001268041A (ja) 2001-09-28

Similar Documents

Publication Publication Date Title
BR0100531A (pt) Correção de desvio de amostragem em um sistema de multiplexação de divisão de frequência ortogonal
BR0100297A (pt) Correção de frequência de oscilador local em um sistema de multiplexação de divisão de frequência ortogonal
ATE418823T1 (de) Zeitdriftkompensation in systemen, die auf drahtlosen paketen basieren
WO2007087621A3 (en) Robust detection of packet types
EP1204234A3 (en) Synchronisation in MC-CDMA systems
WO2007092692A3 (en) Method and apparatus for initial acquisition and cell search for an ofdma system
DE60045186D1 (de) Synchronisation von ofdm signalen
EP1505787A3 (en) Optimized synchronization preamble structure
DE69841693D1 (de) System zur Mehrträgermodulation, mit veränderbaren Symbolgeschwindigkeiten
WO2001047204A8 (en) Correction of a sampling frequency offset in an orthogonal frequency division multiplexing system by sidelobe analysis of pilot subcarriers
WO2007092694A3 (en) Method and apparatus for interleaving sequence elements of an ofdma synchronization channel
NO20062201L (no) Fremgangsmater og apparater for soking etter signalbaerere
BRPI0517013A (pt) multiplexação no tempo de sinais unicast e multicast em uma freqüência da portadora de downlink em um sistema de comunicação sem fio
BR9913552A (pt) Localização de posição com oscilador de baixa tolerância
BRPI0608285A2 (pt) sincronização de quadro em um sistema ofdm
EA200100948A1 (ru) Гетероциклические тиоэфиры и кетоны
WO2007084898A3 (en) Multi-symbol signals including an initial symbol and an extension portion
ATE285650T1 (de) Optimierte synchronisierungspräambelstruktur für ofdm-system
BR0014688A (pt) Sistema para estabelecer o protocolo de transmissão baseado na taxa de transmissão de dados detectada
DE69721282D1 (de) In vitro transpositionsystem unter verwendung einer modifizierten tn5 transposase
ITTO971043A0 (it) Dispositivo per la correzione di un offset di frequenza in un sistema di ricezione ofdm.
TW200507506A (en) Method and system for OFDM symbol timing synchronization
BR0115068A (pt) Método e aparelho para determinar os termos da distribuição de conteúdo áudio/visual digital com base nos nìveis de pirataria detectados
DE60002275D1 (de) System zur Erzeugen von Quadratursignalen
BR0106034A (pt) Aparelho de radiodifusão usando método de demodulação ofdm

Legal Events

Date Code Title Description
B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04J 11/00

Ipc: H04J 11/00 (2006.01), H04L 27/34 (2006.01), H04L 2

B07A Technical examination (opinion): publication of technical examination (opinion) [chapter 7.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B11D Dismissal acc. art. 38, par 2 of ipl - failure to pay fee after grant in time