WO2000049782A3 - A system and method for recovering symbol timing offset and carrier frequency error - Google Patents

A system and method for recovering symbol timing offset and carrier frequency error Download PDF

Info

Publication number
WO2000049782A3
WO2000049782A3 PCT/US2000/004062 US0004062W WO0049782A3 WO 2000049782 A3 WO2000049782 A3 WO 2000049782A3 US 0004062 W US0004062 W US 0004062W WO 0049782 A3 WO0049782 A3 WO 0049782A3
Authority
WO
WIPO (PCT)
Prior art keywords
signal
circuit
ofdm
carrier frequency
frequency error
Prior art date
Application number
PCT/US2000/004062
Other languages
French (fr)
Other versions
WO2000049782A2 (en
Inventor
Paul James Peyla
Joseph Bertram Bronder
Original Assignee
Usa Digital Radio Inc
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 Usa Digital Radio Inc filed Critical Usa Digital Radio Inc
Priority to EP00908707A priority Critical patent/EP1155545A2/en
Priority to BR122014017040A priority patent/BR122014017040B1/en
Priority to BRPI0008375-5A priority patent/BRPI0008375B1/en
Priority to AU30003/00A priority patent/AU770957B2/en
Priority to CA002362029A priority patent/CA2362029A1/en
Priority to JP2000600408A priority patent/JP2002537729A/en
Priority to MXPA01008333A priority patent/MXPA01008333A/en
Publication of WO2000049782A2 publication Critical patent/WO2000049782A2/en
Publication of WO2000049782A3 publication Critical patent/WO2000049782A3/en

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)

Abstract

The system for recovering symbol timing offset and carrier frequency error from an orthogonal frequency division multiplexed (OFDM) signal includes a receiver circuit for receiving an OFDM modulated signal representing a series of OFDM symbols, and providing a received signal to an output thereof. A peak development circuit is included for developing a signal having a plurality of signal peaks representing symbol boundary positions for each received OFDM symbol, where each of the signal peaks is developed responsive to an amplitude and phase correspondence produced between the leading and trailing portions of each of the received OFDM symbols. The system includes a circuit for enhancing the signal peak detectability, which includes a circuit for additively superimposing and then filtering the signal peaks, to produce an enhanced signal peak having an improved signal-to-noise ratio. A circuit for establishing a temporal position indicative of the symbol boundary position from at least one of the enhance signal peaks output from the signal enhancing module is also provided. Further, a circuit for recovering the received OFDM signal carrier frequency error corresponding to the temporal position is included.
PCT/US2000/004062 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error WO2000049782A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
EP00908707A EP1155545A2 (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error
BR122014017040A BR122014017040B1 (en) 1999-02-18 2000-02-17 system and method for recovering a symbol timing offset and frequency error carrying an orthogonal frequency division multiplexed signal
BRPI0008375-5A BRPI0008375B1 (en) 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
AU30003/00A AU770957B2 (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error
CA002362029A CA2362029A1 (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error in an ofdm digital audio broadcast system
JP2000600408A JP2002537729A (en) 1999-02-18 2000-02-17 System and method for recovering code timing offset and carrier frequency error in OFDM digital audio broadcasting system
MXPA01008333A MXPA01008333A (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error in an ofdm digital audio broadcast system.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
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
US09/252,959 1999-02-18

Publications (2)

Publication Number Publication Date
WO2000049782A2 WO2000049782A2 (en) 2000-08-24
WO2000049782A3 true WO2000049782A3 (en) 2001-03-08

Family

ID=22958273

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/004062 WO2000049782A2 (en) 1999-02-18 2000-02-17 A system and method for recovering symbol timing offset and carrier frequency error

Country Status (11)

Country Link
US (2) US6539063B1 (en)
EP (1) EP1155545A2 (en)
JP (1) JP2002537729A (en)
KR (1) KR100682162B1 (en)
CN (1) CN1138378C (en)
AU (1) AU770957B2 (en)
BR (2) BR122014017040B1 (en)
CA (2) CA2663122A1 (en)
MX (1) MXPA01008333A (en)
RU (1) RU2232479C2 (en)
WO (1) WO2000049782A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8948329B2 (en) 2005-12-15 2015-02-03 Qualcomm Incorporated Apparatus and methods for timing recovery in a wireless transceiver

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9801748L (en) * 1998-05-18 1999-11-19 Telia Ab Improvements in or relating to telecommunication transmission systems
KR100335443B1 (en) * 1999-06-15 2002-05-04 윤종용 Symbol timing and frequency synchronizing device for OFDM signals and method thereof
JP2001103033A (en) * 1999-09-30 2001-04-13 Hitachi Denshi Ltd Data transmission device
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
EP1343264A4 (en) * 2000-12-12 2010-05-05 Kenwood Corp 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 (en) * 2001-10-04 2007-02-14 シャープ株式会社 OFDM demodulating circuit and OFDM receiving apparatus using the same
KR100435494B1 (en) * 2001-11-21 2004-06-09 한국전자통신연구원 System for synchronizing of digital communication and method thereof
KR100441501B1 (en) * 2002-01-17 2004-07-23 삼성전자주식회사 Apparatus for recovering symbol timing of OFDM Receiver and Method using the same
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
EP1469647B1 (en) * 2003-04-17 2007-01-10 Mitsubishi Electric Information Technology Centre Europe B.V. OFDM symbol synchronisation
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 (en) * 2003-07-04 2006-06-07 ソニー株式会社 WIRELESS COMMUNICATION SYSTEM, TRANSMITTING DEVICE AND TRANSMITTING METHOD, RECEIVING DEVICE AND RECEIVING METHOD
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
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 (en) * 2004-09-24 2006-03-29 松下电器产业株式会社 Symbol timing method for multi-antenna wireless communication system
KR100631203B1 (en) * 2004-10-07 2006-10-04 삼성전자주식회사 Apparatus for carrier and symbol timing recovery at VSB type receiver and methods thereof
CN1780188A (en) * 2004-11-25 2006-05-31 松下电器产业株式会社 Multi-rate radio communication system and dynamic code distributing method
US8401503B2 (en) * 2005-03-01 2013-03-19 Qualcomm Incorporated Dual-loop automatic frequency control for wireless communication
US8175123B2 (en) 2005-03-10 2012-05-08 Qualcomm Incorporated Collection window positioning using time tracking information
US8675631B2 (en) 2005-03-10 2014-03-18 Qualcomm Incorporated Method and system for achieving faster device operation by logical separation of control information
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
US8009775B2 (en) * 2005-03-11 2011-08-30 Qualcomm Incorporated Automatic frequency control for a wireless communication system with multiple subcarriers
CN1838653A (en) 2005-03-24 2006-09-27 松下电器产业株式会社 Low-power consumption communication apparatus, low-power consumption multi-antenna communication system and its operating method
US8223623B2 (en) * 2005-03-28 2012-07-17 Qualcomm Incorporated Timing and frequency acquisition for OFDM systems
RU2286025C1 (en) 2005-06-15 2006-10-20 Игорь Борисович Дунаев Method for transmitting and receiving signals of quadrature amplitude modulation, system for realization of method, machine-readable carrier and method for using method for synchronization of receipt of signals of quadrature amplitude modulation
RU2290749C1 (en) 2005-06-15 2006-12-27 Игорь Борисович Дунаев Method for demodulating multiposition frequency keyed and equidistant frequency diversion signal, demodulator of such signal, and computer-readable medium
JP2006352746A (en) * 2005-06-20 2006-12-28 Fujitsu Ltd Receiver for orthogonal frequency division multiplexing transmission
CN1968239A (en) 2005-11-17 2007-05-23 松下电器产业株式会社 Carrier allocation method for multi-cell orthogonal frequency division multiple address system
KR100770008B1 (en) * 2005-12-09 2007-10-25 한국전자통신연구원 Time and Frequency Offset Estimation with Antenna Diversity in OFDM Communication System
JP4578446B2 (en) * 2006-07-24 2010-11-10 パナソニック株式会社 Pulse transmitting device, pulse receiving device, and pulse communication system
US8121229B2 (en) * 2006-07-24 2012-02-21 Industrial Technology Research Institute Guard section length detection method and system
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
US7933368B2 (en) * 2007-06-04 2011-04-26 Ibiquity Digital Corporation Method and apparatus for implementing a digital signal quality metric
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
FR2917552B1 (en) * 2007-06-15 2009-08-28 Sagem Defense Securite METHOD FOR REGULATING THE TRANSMISSION GEIGE WITHIN A RECEPTION TERMINAL
JP4916962B2 (en) * 2007-06-26 2012-04-18 日本電波工業株式会社 Signal processor and radio
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 (en) * 2008-01-28 2012-09-19 京セラ株式会社 Wireless communication method, wireless communication system, base station, mobile station
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 (en) * 2009-06-09 2013-05-08 中兴通讯股份有限公司 OFDM (Orthogonal Frequency Division Multiplexing) signal demodulation method and device
CN101931437A (en) * 2009-06-19 2010-12-29 松下电器产业株式会社 Method and device for setting demodulation reference signal in wireless communication system
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 (en) * 2012-03-27 2013-06-10 Федеральное государственное бюджетное учреждение науки Институт проблем управления им. В.А. Трапезникова РАН Apparatus for detecting and eliminating faults when transmitting binary signals over two optical channel lines
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
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
CN106227499B (en) * 2016-07-21 2018-12-21 北京海泰方圆科技股份有限公司 A kind of control method of data transmission, apparatus and system
RU2696553C1 (en) * 2018-11-13 2019-08-02 Акционерное общество "Концерн "Созвездие" Device for stochastic synchronization of symbols
CN111181877A (en) * 2018-11-13 2020-05-19 联发科技股份有限公司 Communication receiving device and signal processing method thereof
US11635496B2 (en) 2019-09-10 2023-04-25 Analog Devices International Unlimited Company Data reduction for optical detection
RU2735494C1 (en) * 2020-01-31 2020-11-03 Акционерное общество "Концерн "Созвездие" Adaptive symbol synchronization device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0683576A1 (en) * 1994-05-20 1995-11-22 Hitachi, Ltd. An OFDM digital broadcasting system, and a transmission system and a receiving system used for digital broadcasting
WO1997049207A1 (en) * 1996-06-19 1997-12-24 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

Family Cites Families (60)

* 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 (en) 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 (en) 1990-02-06 1992-06-05 France Etat METHOD FOR BROADCASTING DIGITAL DATA, ESPECIALLY FOR BROADBAND BROADCASTING TO MOBILES, WITH TIME-FREQUENCY INTERLACING AND ASSISTING THE ACQUISITION OF AUTOMATIC FREQUENCY CONTROL, AND CORRESPONDING RECEIVER.
GB9020170D0 (en) 1990-09-14 1990-10-24 Indep Broadcasting Authority Orthogonal frequency division multiplexing
FR2670062B1 (en) 1990-11-30 1993-11-12 Thomson Csf METHOD FOR RECALARING THE LOCAL OSCILLATORS OF A RECEIVER AND DEVICE FOR CARRYING OUT THE METHOD.
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
JPH05102899A (en) 1991-08-16 1993-04-23 Shiyoudenriyoku Kosoku Tsushin Kenkyusho:Kk Multi-frequency communication system
US5548819A (en) 1991-12-02 1996-08-20 Spectraplex, Inc. Method and apparatus for communication of information
JP2904986B2 (en) 1992-01-31 1999-06-14 日本放送協会 Orthogonal frequency division multiplex digital signal transmitter and receiver
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 (en) 1992-07-16 1994-01-21 Philips Electronique Lab Multiplexed orthogonal frequency division signal receiver with frequency synchronization device.
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
DE69434306T2 (en) 1993-01-20 2005-11-10 Koninklijke Philips Electronics N.V. Method for separating a block frequency from a block-formatted signal
CA2115118A1 (en) 1993-02-08 1994-08-09 Arie Geert Cornelis Koppelaar 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 (en) 1993-07-20 1994-10-17 Telia Ab Method and apparatus for synchronization in digital transmission system of type OFDM
JPH0746217A (en) 1993-07-26 1995-02-14 Sony Corp Digital demodulator
JPH0746218A (en) 1993-07-28 1995-02-14 Sony Corp Digital demodulator
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
JP3041175B2 (en) * 1993-11-12 2000-05-15 株式会社東芝 OFDM synchronous demodulation circuit
JP3074103B2 (en) 1993-11-16 2000-08-07 株式会社東芝 OFDM synchronous demodulation circuit
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
JP2731722B2 (en) 1994-05-26 1998-03-25 日本電気株式会社 Clock frequency automatic control system and transmitter and receiver used therefor
US5627863A (en) 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
JP3577754B2 (en) * 1994-09-09 2004-10-13 ソニー株式会社 Communication method and device
JP3421879B2 (en) * 1994-10-05 2003-06-30 ソニー株式会社 Demodulator
JP3421880B2 (en) 1994-10-05 2003-06-30 ソニー株式会社 Demodulator
FR2726417A1 (en) 1994-10-26 1996-05-03 Philips Electronique Lab TRANSMISSION AND RECEIVER SYSTEM OF SIGNALS WITH MULTIPLEXED SPEECHOGONAL FREQUENCY DISTRIBUTION EQUIPPED WITH A FREQUENCY SYNCHRONIZATION DEVICE
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 (en) 1995-02-24 2001-01-31 株式会社東芝 OFDM transmission receiving method and transmitting / receiving apparatus
SE514986C2 (en) * 1995-03-01 2001-05-28 Telia Ab Method and device for synchronization with OFDM systems
US5629639A (en) 1995-06-07 1997-05-13 Omnipoint Corporation Correlation peak detector
DE19520353A1 (en) * 1995-06-07 1996-12-12 Thomson Brandt Gmbh Method and circuit arrangement for improving the reception behavior when transmitting digital signals
JP2774961B2 (en) * 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 demodulator
JPH1065605A (en) * 1996-08-23 1998-03-06 Sony Corp Receiving method, timing detecting device and receiving device
JPH1065604A (en) * 1996-08-23 1998-03-06 Sony Corp Communication method, base station and terminal equipment
JPH1065609A (en) * 1996-08-23 1998-03-06 Sony Corp Communication method, base station and terminal equipment
JP2883866B2 (en) * 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 demodulator
JP3726857B2 (en) * 1997-05-02 2005-12-14 ソニー株式会社 Receiving apparatus and receiving method
JP3568180B2 (en) * 1997-06-12 2004-09-22 株式会社日立国際電気 Data transmission equipment
JPH1117643A (en) * 1997-06-19 1999-01-22 Hitachi Denshi Ltd Ofdm modulator
JPH11103285A (en) * 1997-09-26 1999-04-13 Nippon Hoso Kyokai <Nhk> Ofdm signal transmitting device
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 (en) * 1998-06-08 1999-12-24 Matsushita Electric Ind Co Ltd Symbol synchronizing circuit
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0683576A1 (en) * 1994-05-20 1995-11-22 Hitachi, Ltd. An OFDM digital broadcasting system, and a transmission system and a receiving system used for digital broadcasting
WO1997049207A1 (en) * 1996-06-19 1997-12-24 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

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
HONG S ET AL: "AN EFFICIENT TIMING SYNCHRONIZATION TECHNIQUE FOR FFT BASED MULTI-CARRIER DIRECT SEQUENCE SPREAD SPECTRUM TRANSCEIVER", IEEE MILITARY COMMUNICATIONS CONFERENCE,US,NEW YORK, NY: IEEE, 1998, pages 713 - 717, XP000828820, ISBN: 0-7803-4507-X *
MOCHIZUKI N ET AL: "A HIGH PERFORMANCE FREQUENCY AND TIMING SYNCHRONIZATION TECHNIQUE FOR OFDM", IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE,US,NEW YORK, NY: IEEE, 1998, pages 3443 - 3448, XP000805272, ISBN: 0-7803-4985-7 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8948329B2 (en) 2005-12-15 2015-02-03 Qualcomm Incorporated Apparatus and methods for timing recovery in a wireless transceiver

Also Published As

Publication number Publication date
US6891898B2 (en) 2005-05-10
US20030053550A1 (en) 2003-03-20
AU3000300A (en) 2000-09-04
AU770957B2 (en) 2004-03-11
CN1138378C (en) 2004-02-11
KR20010108236A (en) 2001-12-07
MXPA01008333A (en) 2003-06-06
JP2002537729A (en) 2002-11-05
WO2000049782A2 (en) 2000-08-24
EP1155545A2 (en) 2001-11-21
RU2232479C2 (en) 2004-07-10
BR122014017040B1 (en) 2016-12-27
CN1351787A (en) 2002-05-29
BR0008375A (en) 2001-11-06
BRPI0008375B1 (en) 2017-11-21
CA2362029A1 (en) 2000-08-24
KR100682162B1 (en) 2007-02-12
CA2663122A1 (en) 2000-08-24
US6539063B1 (en) 2003-03-25

Similar Documents

Publication Publication Date Title
WO2000049782A3 (en) A system and method for recovering symbol timing offset and carrier frequency error
EP0772330A3 (en) Receiver and method for receiving OFDM signals
KR960032953A (en) OFDM transmission reception system and transmission / reception apparatus
US7519121B2 (en) OFDM demodulation circuit and OFDM reception apparatus using the same
US6711123B1 (en) Receiving apparatus for OFDM communication system
EP1172982A3 (en) Carrier recovery in a multicarrier receiver
EP0353779A3 (en) Preamble detection circuit for digital communications system
EP0786888A3 (en) Provision of a frequency reference in a multicarrier modulation system
US7961811B2 (en) Radio transmitting apparatus and radio transmitting method
CA2327876A1 (en) Echo phase offset correction in a multi-carrier demodulation system
EP0279080B1 (en) Radio data transmission system
JPH07264091A (en) Communication equipment for radio card
JP2850858B2 (en) CDMA transmission / reception method
JP2000049747A5 (en)
JP3399768B2 (en) Signal transmission equipment
EP1039711B1 (en) Digital demodulator
KR100309591B1 (en) Apparatus and method for coherent data demodulation in a code division multiple access communication system
JP3750508B2 (en) AFC method
JP3286128B2 (en) Code division multiplex communication method and apparatus
JPH08335924A (en) Orthogonal frequency division multiplexing transmitter
JP3578575B2 (en) Two-phase phase modulation transceiver
JP2002204215A (en) Phase error correcting device of ofdm receiving device
JPH08265294A (en) Quadrature frequency division multiplex communication system
JPH10224320A (en) Ofdm demodulator
JP3404436B2 (en) Automatic frequency control method of modulated wave signal

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 00805269.7

Country of ref document: CN

AK Designated states

Kind code of ref document: A2

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A2

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
AK Designated states

Kind code of ref document: A3

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A3

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

ENP Entry into the national phase

Ref document number: 2362029

Country of ref document: CA

Ref document number: 2362029

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: PA/a/2001/008333

Country of ref document: MX

Ref document number: 30003/00

Country of ref document: AU

Ref document number: IN/PCT/2001/840/KOL

Country of ref document: IN

WWE Wipo information: entry into national phase

Ref document number: 1020017010528

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 2000 600408

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 2000908707

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 2000908707

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1020017010528

Country of ref document: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWG Wipo information: grant in national office

Ref document number: 30003/00

Country of ref document: AU

WWG Wipo information: grant in national office

Ref document number: 1020017010528

Country of ref document: KR