BRPI0008375B1 - System and process for recovering a symbol timer defrost and frequency error carrier of a multiplexed sign by ortogonal frequency division - Google Patents

System and process for recovering a symbol timer defrost and frequency error carrier of a multiplexed sign by ortogonal frequency division Download PDF

Info

Publication number
BRPI0008375B1
BRPI0008375B1 BRPI0008375-5A BR0008375A BRPI0008375B1 BR PI0008375 B1 BRPI0008375 B1 BR PI0008375B1 BR 0008375 A BR0008375 A BR 0008375A BR PI0008375 B1 BRPI0008375 B1 BR PI0008375B1
Authority
BR
Brazil
Prior art keywords
signal
symbol
peak
ofdm
devices
Prior art date
Application number
BRPI0008375-5A
Other languages
English (en)
Portuguese (pt)
Other versions
BR0008375A (pt
Inventor
James Peyla Paul
Bertram Bronder Joseph
Original Assignee
Ibiquity Digital Corporation
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 Ibiquity Digital Corporation filed Critical Ibiquity Digital Corporation
Priority to BR122014017040A priority Critical patent/BR122014017040B1/pt
Publication of BR0008375A publication Critical patent/BR0008375A/pt
Publication of BRPI0008375B1 publication Critical patent/BRPI0008375B1/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
    • H04L27/2676—Blind, i.e. without using known symbols

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Radio Transmission System (AREA)
BRPI0008375-5A 1999-02-18 2000-02-17 System and process for recovering a symbol timer defrost and frequency error carrier of a multiplexed sign by ortogonal frequency division BRPI0008375B1 (pt)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BR122014017040A BR122014017040B1 (pt) 1999-02-18 2000-02-17 sistema e processo para recuperar um desvio de temporização de símbolo e erro de frequência portadora de um sinal multiplexado por divisão de frequência ortogonal

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/252959 1999-02-18
US09/252,959 US6539063B1 (en) 1999-02-18 1999-02-18 System and method for recovering symbol timing offset and carrier frequency error in an OFDM digital audio broadcast system
PCT/US2000/004062 WO2000049782A2 (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error

Publications (2)

Publication Number Publication Date
BR0008375A BR0008375A (pt) 2001-11-06
BRPI0008375B1 true BRPI0008375B1 (pt) 2017-11-21

Family

ID=22958273

Family Applications (2)

Application Number Title Priority Date Filing Date
BRPI0008375-5A BRPI0008375B1 (pt) 1999-02-18 2000-02-17 System and process for recovering a symbol timer defrost and frequency error carrier of a multiplexed sign by ortogonal frequency division
BR122014017040A BR122014017040B1 (pt) 1999-02-18 2000-02-17 sistema e processo para recuperar um desvio de temporização de símbolo e erro de frequência portadora de um sinal multiplexado por divisão de frequência ortogonal

Family Applications After (1)

Application Number Title Priority Date Filing Date
BR122014017040A BR122014017040B1 (pt) 1999-02-18 2000-02-17 sistema e processo para recuperar um desvio de temporização de símbolo e erro de frequência portadora de um sinal multiplexado por divisão de frequência ortogonal

Country Status (11)

Country Link
US (2) US6539063B1 (https=)
EP (1) EP1155545A2 (https=)
JP (1) JP2002537729A (https=)
KR (1) KR100682162B1 (https=)
CN (1) CN1138378C (https=)
AU (1) AU770957B2 (https=)
BR (2) BRPI0008375B1 (https=)
CA (2) CA2663122A1 (https=)
MX (1) MXPA01008333A (https=)
RU (1) RU2232479C2 (https=)
WO (1) WO2000049782A2 (https=)

Families Citing this family (72)

* 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
KR100335443B1 (ko) * 1999-06-15 2002-05-04 윤종용 직교주파수분할다중변조 신호의 심볼 타이밍 및 주파수 동기 장치 및 방법
JP2001103033A (ja) * 1999-09-30 2001-04-13 Hitachi Denshi Ltd データ伝送装置
US6874006B1 (en) * 1999-10-29 2005-03-29 Pentomics, Inc. Apparatus and method for rectangular-to-polar conversion
US6980592B1 (en) * 1999-12-23 2005-12-27 Agere Systems Inc. Digital adaptive equalizer for T1/E1 long haul transceiver
US6754170B1 (en) * 2000-09-29 2004-06-22 Symbol Technologies, Inc. Timing synchronization in OFDM communications receivers
US7209494B1 (en) * 2000-10-24 2007-04-24 L-3 Communications Corporation Digital reverse transmission frequency training method for time division duplex (TDD) communication system
WO2002049250A1 (en) * 2000-12-12 2002-06-20 Kabushiki Kaisha Kenwood Diversity receiver, and method for receiving orthogonal frequency division multiplex signal
US7012881B2 (en) * 2000-12-29 2006-03-14 Samsung Electronic Co., Ltd. Timing and frequency offset estimation scheme for OFDM systems by using an analytic tone
US6868129B2 (en) * 2001-03-12 2005-03-15 Freescale Semiconductor, Inc. Demodulator for a radio receiver and method of operation
US6831907B2 (en) * 2001-08-31 2004-12-14 Ericsson Inc. Digital format U.S. commercial FM broadcast system
JP3880358B2 (ja) * 2001-10-04 2007-02-14 シャープ株式会社 Ｏｆｄｍ復調回路及びこれを用いたｏｆｄｍ受信装置
KR100435494B1 (ko) * 2001-11-21 2004-06-09 한국전자통신연구원 디지털 통신에서의 동기 수행 시스템 및 그 방법
KR100441501B1 (ko) * 2002-01-17 2004-07-23 삼성전자주식회사 오에프디엠수신기의 심볼 타이밍 복원장치 및 방법
SG129230A1 (en) * 2002-07-03 2007-02-26 Oki Techno Ct Singapore Pte Receiver and method for wlan burst type signals
US7889819B2 (en) * 2002-10-04 2011-02-15 Apurva Mody Methods and systems for sampling frequency offset detection, correction and control for MIMO OFDM systems
US7693117B2 (en) * 2002-12-16 2010-04-06 Avaya Inc. Power-saving mechanism for periodic traffic streams in wireless local-area networks
US7308063B2 (en) * 2002-12-20 2007-12-11 Nokia Corporation Apparatus, and associated method, for effectuating post-FFT correction of fine frequency offset
DE60311067T2 (de) * 2003-04-17 2007-08-16 Mitsubishi Denki K.K. OFDM-Symbolsynchronisierung
US7418040B2 (en) * 2003-05-30 2008-08-26 Motorola, Inc. Method and apparatus for determining a timing offset for processing a multi-carrier signal
US7065150B2 (en) * 2003-06-16 2006-06-20 Motorola, Inc. System and method for generating a root raised cosine orthogonal frequency division multiplexing (RRC OFDM) modulation
JP3783701B2 (ja) * 2003-07-04 2006-06-07 ソニー株式会社 マルチキャリヤ伝送を行なう無線通信システム、送信装置及び送信方法、並びに受信装置及び受信方法
RU2304359C2 (ru) * 2003-11-10 2007-08-10 Корпорация "Самсунг Электроникс" Способ частотно-временной синхронизации системы связи и устройство для его осуществления
US7305056B2 (en) 2003-11-18 2007-12-04 Ibiquity Digital Corporation Coherent tracking for FM in-band on-channel receivers
US7292527B2 (en) * 2003-12-05 2007-11-06 Advanced Micro Devices, Inc. Residual frequency error estimation in an OFDM receiver
RU2291577C2 (ru) * 2004-08-27 2007-01-10 Самсунг Электроникс Ко., Лтд. Способ снижения значения пиковой мощности сигналов и многочастотная система для его реализации
US7298772B1 (en) 2004-09-03 2007-11-20 Redpine Signals, Inc. Packet detection, symbol timing, and coarse frequency estimation in an OFDM communications system
CN1753395A (zh) * 2004-09-24 2006-03-29 松下电器产业株式会社 多天线无线通信系统的符号定时方法
KR100631203B1 (ko) * 2004-10-07 2006-10-04 삼성전자주식회사 Ｖｓｂ 방식 수신기를 위한 반송파 및 심볼 타이밍복원장치 그리고 그 복원방법
CN1780188A (zh) * 2004-11-25 2006-05-31 松下电器产业株式会社 多速率无线通信系统及其动态码分配方法
US8401503B2 (en) * 2005-03-01 2013-03-19 Qualcomm Incorporated Dual-loop automatic frequency control for wireless communication
US8428001B2 (en) * 2005-03-10 2013-04-23 Qualcomm Incorporated Timing corrections in a multi carrier system and propagation to a channel estimation time filter
US8675631B2 (en) 2005-03-10 2014-03-18 Qualcomm Incorporated Method and system for achieving faster device operation by logical separation of control information
US8144824B2 (en) 2005-03-10 2012-03-27 Qualcomm Incorporated Trend influenced time tracking
US20060221810A1 (en) * 2005-03-10 2006-10-05 Bojan Vrcelj Fine timing acquisition
US8009775B2 (en) * 2005-03-11 2011-08-30 Qualcomm Incorporated Automatic frequency control for a wireless communication system with multiple subcarriers
CN1838653A (zh) 2005-03-24 2006-09-27 松下电器产业株式会社 低功耗通信装置、低功耗多天线通信系统及其操作方法
US8223623B2 (en) * 2005-03-28 2012-07-17 Qualcomm Incorporated Timing and frequency acquisition for OFDM systems
RU2290749C1 (ru) * 2005-06-15 2006-12-27 Игорь Борисович Дунаев Способ демодуляции сигнала многопозиционной частотной манипуляции с эквидистантным разнесением по частоте, демодулятор такого сигнала и машиночитаемый носитель
RU2286025C1 (ru) 2005-06-15 2006-10-20 Игорь Борисович Дунаев Способ передачи и приема сигналов квадратурной амплитудной модуляции, система для его осуществления, машиночитаемый носитель и применение способа для синхронизации приема сигналов квадратурной амплитудной модуляции
JP2006352746A (ja) * 2005-06-20 2006-12-28 Fujitsu Ltd 直交周波数分割多重伝送用受信機
CN1968239A (zh) 2005-11-17 2007-05-23 松下电器产业株式会社 用于多小区正交频分多址系统的载波分配方法
KR100770008B1 (ko) * 2005-12-09 2007-10-25 한국전자통신연구원 직교 주파수 분할 다중화 통신시스템에서 다이버시티를이용한 시간 및 주파수 옵셋 추정 방법 및 그 장치
US8948329B2 (en) 2005-12-15 2015-02-03 Qualcomm Incorporated Apparatus and methods for timing recovery in a wireless transceiver
US8121229B2 (en) * 2006-07-24 2012-02-21 Industrial Technology Research Institute Guard section length detection method and system
JP4578446B2 (ja) * 2006-07-24 2010-11-10 パナソニック株式会社 パルス送信装置、パルス受信装置、およびパルス通信システム
US20080219332A1 (en) * 2007-03-05 2008-09-11 Qualcomm Incorporated Apparatus and methods accounting for automatic gain control in a multi carrier system
US8098567B2 (en) * 2007-03-05 2012-01-17 Qualcomm Incorporated Timing adjustments for channel estimation in a multi carrier system
US7933367B2 (en) * 2007-06-04 2011-04-26 Ibiquity Digital Corporation Method and apparatus for implementing seek and scan functions for an FM digital radio signal
US7933368B2 (en) * 2007-06-04 2011-04-26 Ibiquity Digital Corporation Method and apparatus for implementing a digital signal quality metric
FR2917552B1 (fr) * 2007-06-15 2009-08-28 Sagem Defense Securite Procede de regulation de la gigue de transmission au sein d'un terminal de reception
JP4916962B2 (ja) * 2007-06-26 2012-04-18 日本電波工業株式会社 信号処理部及び無線機
US7982683B2 (en) * 2007-09-26 2011-07-19 Ibiquity Digital Corporation Antenna design for FM radio receivers
WO2009059320A1 (en) * 2007-11-01 2009-05-07 National Public Radio A method for determining audio broadcast transmission signal coverage
JP5031600B2 (ja) * 2008-01-28 2012-09-19 京セラ株式会社 無線通信方法、無線通信システム、基地局、移動局
US8340060B2 (en) * 2008-03-03 2012-12-25 Ntt Docomo, Inc. OFDMA-based co-channel femtocell
US8180470B2 (en) * 2008-07-31 2012-05-15 Ibiquity Digital Corporation Systems and methods for fine alignment of analog and digital signal pathways
US8068563B2 (en) * 2008-10-20 2011-11-29 Ibiquity Digital Corporation Systems and methods for frequency offset correction in a digital radio broadcast receiver
US8265203B2 (en) * 2009-01-21 2012-09-11 Ntt Docomo, Inc. Method and system of differential complex and real multi-carrier demodulation
CN101924723B (zh) * 2009-06-09 2013-05-08 中兴通讯股份有限公司 Ofdm信号解调方法和装置
CN101931437A (zh) * 2009-06-19 2010-12-29 松下电器产业株式会社 无线通信系统中的解调参考信号设置方法及装置
US8681731B2 (en) * 2010-05-17 2014-03-25 Blackberry Limited Orthogonal frequency-division multiplexing (OFDM) communication slot structures and methods
US8817917B2 (en) 2011-06-21 2014-08-26 Ibiquity Digital Corporation Method and apparatus for implementing signal quality metrics and antenna diversity switching control
RU2484521C1 (ru) * 2012-03-27 2013-06-10 Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова РАН Устройство обнаружения и устранения отказов при передаче двоичных сигналов по двум линиям оптического канала
US8948272B2 (en) 2012-12-03 2015-02-03 Digital PowerRadio, LLC Joint source-channel decoding with source sequence augmentation
US9191256B2 (en) 2012-12-03 2015-11-17 Digital PowerRadio, LLC Systems and methods for advanced iterative decoding and channel estimation of concatenated coding systems
US8595590B1 (en) 2012-12-03 2013-11-26 Digital PowerRadio, LLC Systems and methods for encoding and decoding of check-irregular non-systematic IRA codes
CN106227499B (zh) * 2016-07-21 2018-12-21 北京海泰方圆科技股份有限公司 一种数据传输的控制方法、装置及系统
CN111181877A (zh) * 2018-11-13 2020-05-19 联发科技股份有限公司 通讯接收装置及其信号处理方法
RU2696553C1 (ru) * 2018-11-13 2019-08-02 Акционерное общество "Концерн "Созвездие" Устройство стохастической синхронизации символов
US11635496B2 (en) 2019-09-10 2023-04-25 Analog Devices International Unlimited Company Data reduction for optical detection
RU2735494C1 (ru) * 2020-01-31 2020-11-03 Акционерное общество "Концерн "Созвездие" Устройство адаптивной синхронизации символов

Family Cites Families (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549423A (en) 1943-09-22 1951-04-17 Rca Corp Reduction of selective fading distortion
US2880275A (en) 1953-04-20 1959-03-31 Leonard R Kahn Communication system
US2943316A (en) 1955-01-07 1960-06-28 Rca Corp Selective detection of radar targets in the presence of noise signals
US3364482A (en) 1966-12-09 1968-01-16 Air Force Usa Apparatus for reducing radar weather returns by coincidence detection
US3555427A (en) 1968-02-01 1971-01-12 Raytheon Co Digital diversity reception system
US3780279A (en) 1972-01-17 1973-12-18 Collins Radio Co Means for extending the identification range of radio equipments using repetitive coded identification signals
US3925650A (en) 1974-02-15 1975-12-09 Presearch Inc Method and apparatus for detecting a repetitive signal in a noisy background
JPS5439093B2 (https=) 1974-08-24 1979-11-26
US4281412A (en) 1979-07-05 1981-07-28 Cincinnati Electronics Corporation Method of and apparatus for transmitting and recovering offset QPSK modulated data
US4344180A (en) 1980-06-19 1982-08-10 Bell Telephone Laboratories, Incorporated Redundant word frame synchronization circuit
US4727534A (en) 1986-08-19 1988-02-23 American Telephone And Telegraph Company Timing and carrier recovery in dual polarization communications systems
US5187711A (en) 1988-09-20 1993-02-16 Fujitsu Limited Error correction method for multicarrier radio transmission system
US5191576A (en) 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
US5357502A (en) 1990-02-06 1994-10-18 France Telecom And Telediffusion De France Sa Device for the reception of digital data time frequency interlacing, notably for radio broadcasting at high bit rate towards mobile receivers with nyquist temporal window
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.
GB9020170D0 (en) 1990-09-14 1990-10-24 Indep Broadcasting Authority Orthogonal frequency division multiplexing
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.
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
RU2038703C1 (ru) * 1991-07-02 1995-06-27 Научно-исследовательский институт "Дельта" Цифровой приемник дискретных сигналов с "вращающейся фазой"
RU2065668C1 (ru) * 1991-07-22 1996-08-20 Поволжский институт информатики, радиотехники и связи Устройство для демодуляции двоичных сигналов
JPH05102899A (ja) 1991-08-16 1993-04-23 Shiyoudenriyoku Kosoku Tsushin Kenkyusho:Kk 多周波通信方式
US5548819A (en) 1991-12-02 1996-08-20 Spectraplex, Inc. Method and apparatus for communication of information
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
GB2268366B (en) 1992-06-30 1996-08-07 Ericsson Ge Mobile Communicat Control channel timing detection and self correction for digitally trunked simulcast radio communication system
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.
US5452331A (en) 1992-08-14 1995-09-19 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Symbol lock detection implemented with nonoverlapping integration intervals
US5428647A (en) 1992-12-07 1995-06-27 Motorola, Inc. Method and apparatus for synchronizing a received signal in a digital radio communication system
DE69427099T2 (de) 1993-01-20 2001-11-08 Koninklijke Philips Electronics N.V., Eindhoven Übertragungssystem mit Taktrückgewinnung
US5416767A (en) 1993-02-08 1995-05-16 U.S. Philips Corporation Method of transmitting a data stream, transmitter and receiver
US5371548A (en) 1993-07-09 1994-12-06 Cable Television Laboratories, Inc. System for transmission of digital data using orthogonal frequency division multiplexing
SE9302453L (sv) 1993-07-20 1994-10-17 Telia Ab Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM
JPH0746217A (ja) 1993-07-26 1995-02-14 Sony Corp ディジタル復調装置
JPH0746218A (ja) 1993-07-28 1995-02-14 Sony Corp ディジタル復調装置
US5581579A (en) * 1993-08-17 1996-12-03 Tcsi Corporation Method and apparatus to adaptively control the frequency of reception in a digital wireless communication system
JP3041175B2 (ja) * 1993-11-12 2000-05-15 株式会社東芝 Ｏｆｄｍ同期復調回路
US5450456A (en) 1993-11-12 1995-09-12 Daimler Benz Ag Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
JP3074103B2 (ja) 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
US5657313A (en) 1994-05-09 1997-08-12 Victor Company Of Japan, Ltd. Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing
JP2989742B2 (ja) 1994-05-20 1999-12-13 株式会社日立製作所 ディジタル放送システムおよび該ディジタル放送用の送信システムならびに該ディジタル放送用の受信システム
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
US5627863A (en) 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
JP3166494B2 (ja) * 1994-07-27 2001-05-14 松下電器産業株式会社 遅延検波方法および装置
JP3577754B2 (ja) * 1994-09-09 2004-10-13 ソニー株式会社 通信方法及び装置
JP3421879B2 (ja) * 1994-10-05 2003-06-30 ソニー株式会社 復調装置
JP3421880B2 (ja) 1994-10-05 2003-06-30 ソニー株式会社 復調装置
FR2726417A1 (fr) 1994-10-26 1996-05-03 Philips Electronique Lab Systeme de transmission et recepteur de signaux a repartition multiplexee de frequences orthogonales muni d'un dispositif de synchronisation de frequences
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
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
US5629639A (en) 1995-06-07 1997-05-13 Omnipoint Corporation Correlation peak detector
DE19520353A1 (de) * 1995-06-07 1996-12-12 Thomson Brandt Gmbh Verfahren und Schaltungsanordnung zur Verbesserung des Empfangsverhaltens bei der Übertragung von digitalen Signalen
US5732105A (en) * 1995-07-31 1998-03-24 Harris Corporation Method of estimating signal quality in a DPSK demodulator
JP2774961B2 (ja) * 1996-03-29 1998-07-09 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
US5949796A (en) 1996-06-19 1999-09-07 Kumar; Derek D. In-band on-channel digital broadcasting method and system
US5732113A (en) 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
JPH1065605A (ja) * 1996-08-23 1998-03-06 Sony Corp 受信方法、タイミング検出装置及び受信装置
JPH1065609A (ja) * 1996-08-23 1998-03-06 Sony Corp 通信方法、基地局及び端末装置
JPH1065604A (ja) * 1996-08-23 1998-03-06 Sony Corp 通信方法、基地局及び端末装置
JP2883866B2 (ja) * 1997-04-21 1999-04-19 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
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
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
JPH1117643A (ja) * 1997-06-19 1999-01-22 Hitachi Denshi Ltd Ｏｆｄｍ変調器
JPH11103285A (ja) * 1997-09-26 1999-04-13 Nippon Hoso Kyokai <Nhk> Ｏｆｄｍ信号伝送装置
US6549592B1 (en) * 1998-02-06 2003-04-15 Cisco Technology, Inc Enhanced synchronization burst for OFDM systems
EP0938208A1 (en) * 1998-02-22 1999-08-25 Sony International (Europe) GmbH Multicarrier transmission, compatible with the existing GSM system
JPH11355241A (ja) * 1998-06-08 1999-12-24 Matsushita Electric Ind Co Ltd シンボル同期回路
US6594320B1 (en) * 1999-08-25 2003-07-15 Lucent Technologies, Inc. Orthogonal Frequency Division Multiplexed (OFDM) carrier acquisition method
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

Also Published As

Publication number Publication date
CA2663122A1 (en) 2000-08-24
CN1351787A (zh) 2002-05-29
BR122014017040B1 (pt) 2016-12-27
CA2362029A1 (en) 2000-08-24
KR20010108236A (ko) 2001-12-07
MXPA01008333A (es) 2003-06-06
RU2232479C2 (ru) 2004-07-10
CN1138378C (zh) 2004-02-11
BR0008375A (pt) 2001-11-06
EP1155545A2 (en) 2001-11-21
US20030053550A1 (en) 2003-03-20
AU3000300A (en) 2000-09-04
AU770957B2 (en) 2004-03-11
JP2002537729A (ja) 2002-11-05
US6539063B1 (en) 2003-03-25
KR100682162B1 (ko) 2007-02-12
WO2000049782A2 (en) 2000-08-24
US6891898B2 (en) 2005-05-10
WO2000049782A3 (en) 2001-03-08

Similar Documents

Publication Publication Date Title
BRPI0008375B1 (pt) System and process for recovering a symbol timer defrost and frequency error carrier of a multiplexed sign by ortogonal frequency division
US6373861B1 (en) Frequency synchronizing device for OFDM/CDMA system
US10411929B2 (en) Preamble symbol receiving method and device
KR100510861B1 (ko) 직교 주파수 분할 다중 전송 시스템에서의 훈련 신호 결정방법 및 그 훈련 신호를 이용한 직교 주파수 분할 다중수신기와 수신 방법
EP1414208A1 (en) Synchronization using training sequences with a periodical structure
ES2270450T3 (es) Receptor multiportadora con compesacion del desplazamiento de frecuencia y de la distorsion dependiente de la frecuencia.
US20140169488A1 (en) Narrow-band preamble for orthogonal frequency-division multiplexing system
KR102283183B1 (ko) 이동통신 시스템에서의 시퀀스 동기화 수행을 위한 방법 및 장치
WO2015158295A1 (zh) 前导符号的接收方法及装置
CN106850487A (zh) 前导符号的接收方法
CA2328169C (en) Coarse frequency synchronisation in multicarrier systems
US8000415B2 (en) Method and device for detecting a synchronization signal in a communication system
KR100519919B1 (ko) Ｏｆｄｍａ 시스템에서의 전송 프레임 구성 방법과 그를이용한 단말기 동기 획득 장치 및 방법
JP6975760B2 (ja) 自己相関器および受信機
AU2006340851B2 (en) Adaptive synchronization enhancement technique for serial modulated waveforms
KR20000047848A (ko) 직교주파수분할다중/부호분할다중접속 시스템의 주파수동기 장치
KR100787568B1 (ko) 높은 대역 효율의 고차 변조 시스템을 위한 심볼 타이밍동기 검출 장치 및 검출 방법
KR100555661B1 (ko) 디지털 방송 수신 시스템의 반송파 주파수 오프셋검출장치 및 그의 주파수 오프셋 검출방법
JPH0583218A (ja) オーソゴナル周波数分割多重方式の復調器
AU2004200128A1 (en) A system and method for recovering symbol timing offset and carrier frequency error
JP3717476B2 (ja) 直交周波数分割多重信号のキャリア周波数誤差検出方法及びその装置
JP3761450B2 (ja) キャリヤ再生方式
JP3761446B2 (ja) クロック再生方法
JP2018148476A (ja) 同期回路及び同期方法
JPS59153347A (ja) オフセツト消去形キヤリア・タイミング結合制御方式

Legal Events

Date Code Title Description
B07A Application suspended after technical examination (opinion) [chapter 7.1 patent gazette]
B09B Patent application refused [chapter 9.2 patent gazette]

Free format text: INDEFIRO O PEDIDO DE ACORDO COM O ART. 8O COMBINADO COM ART. 13 DA LPI

B12B Appeal against refusal [chapter 12.2 patent gazette]
B16A Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]
B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 20A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: REFERENTE AO DESPACHO 21.6 PUBLICADO NA RPI 2553 DE 2019-12-10