CN1181673A - 在使用正交频分多路复用的接收机中的定时同步 - Google Patents

在使用正交频分多路复用的接收机中的定时同步 Download PDF

Info

Publication number
CN1181673A
CN1181673A CN97121150A CN97121150A CN1181673A CN 1181673 A CN1181673 A CN 1181673A CN 97121150 A CN97121150 A CN 97121150A CN 97121150 A CN97121150 A CN 97121150A CN 1181673 A CN1181673 A CN 1181673A
Authority
CN
China
Prior art keywords
interval
output signal
frame
protection
output
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.)
Pending
Application number
CN97121150A
Other languages
English (en)
Chinese (zh)
Inventor
戴维·H·戴维斯
乔纳森·帕克
安东尼·P·J·克莱登
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.)
Discovision Associates
Original Assignee
Discovision Associates
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 Discovision Associates filed Critical Discovision Associates
Publication of CN1181673A publication Critical patent/CN1181673A/zh
Pending legal-status Critical Current

Links

Images

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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0047—Decoding adapted to other signal detection operation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0212—Channel estimation of impulse response
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0232—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding 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
    • H04L27/2662—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
    • H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA]
    • H04L5/026—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA] using code division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Television Systems (AREA)
CN97121150A 1996-10-31 1997-10-22 在使用正交频分多路复用的接收机中的定时同步 Pending CN1181673A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB9622728.5A GB9622728D0 (en) 1996-10-31 1996-10-31 Timing synchronization in a reciever employing orthogonal frequency division mutiplexing
GB9622728.5 1996-10-31

Publications (1)

Publication Number Publication Date
CN1181673A true CN1181673A (zh) 1998-05-13

Family

ID=10802265

Family Applications (1)

Application Number Title Priority Date Filing Date
CN97121150A Pending CN1181673A (zh) 1996-10-31 1997-10-22 在使用正交频分多路复用的接收机中的定时同步

Country Status (13)

Country Link
EP (1) EP0840485B1 (https=)
JP (1) JP4142758B2 (https=)
KR (1) KR19980033375A (https=)
CN (1) CN1181673A (https=)
AR (2) AR008906A1 (https=)
AT (1) ATE196218T1 (https=)
AU (1) AU737361B2 (https=)
CA (1) CA2199111A1 (https=)
DE (1) DE69703016T2 (https=)
GB (2) GB9622728D0 (https=)
ID (1) ID19373A (https=)
IL (1) IL122020A (https=)
SG (1) SG55399A1 (https=)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1309204C (zh) * 2000-02-23 2007-04-04 株式会社Ntt都科摩 多载波cdma无线电传输系统中信道估测方法以及装置
CN102113231B (zh) * 2008-06-06 2013-09-25 马克西姆综合产品公司 盲信道质量估计器
CN1314747B (zh) * 2000-02-11 2014-06-18 朗迅科技公司 在无线通信系统中进行上行链路通信的方法和设备

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100234329B1 (ko) * 1997-09-30 1999-12-15 윤종용 Ofdm 시스템 수신기의 fft 윈도우 위치 복원장치 및 그 방법_
US6167351A (en) * 1998-03-24 2000-12-26 Tektronix, Inc. Period determination of a periodic signal
JP3850452B2 (ja) * 1998-08-24 2006-11-29 三菱電機株式会社 信号復調装置、およびこの信号復調装置における受信制御方法
KR100510637B1 (ko) * 1998-11-07 2006-02-28 엘지전자 주식회사 Dvb 시스템의 동기 검출 장치
GB2353680A (en) 1999-08-27 2001-02-28 Mitsubishi Electric Inf Tech OFDM frame synchronisation
US6920182B2 (en) 2001-01-09 2005-07-19 Microtune (Texas), L.P. Delta-sigma modulator system and method
KR100425297B1 (ko) * 2001-06-11 2004-03-30 삼성전자주식회사 효율적인 심볼 타이밍 옵셋을 추정하는 ｏｆｄｍ 수신시스템 및 그 방법
CN100379212C (zh) * 2002-01-23 2008-04-02 华为技术有限公司 一种查找表电路的实现方法
US7623599B2 (en) * 2005-11-21 2009-11-24 Freescale Semiconductor, Inc. Blind bandwidth detection for a sample stream
JP2008005389A (ja) * 2006-06-26 2008-01-10 Hitachi Ltd 通信方法および通信装置
EP2494753A2 (en) 2009-10-30 2012-09-05 Bangor University Synchronisation process in optical frequency division multiplexing transmission systems
CN101902677B (zh) * 2010-06-23 2015-01-28 中兴通讯股份有限公司 音频检测装置及方法
KR101121086B1 (ko) * 2010-11-10 2012-03-16 충남대학교산학협력단 유니크 워드 기반 주파수 영역 등화기 기반 단일반송파 방식을 위한 채널 추정 기법
GB2489922A (en) 2011-04-06 2012-10-17 Univ Bangor Synchronising optical OFDM signal with pattern of DC offset levels superimposed upon OFDM symbols
CN117826071B (zh) * 2024-03-06 2024-05-28 成都大公博创信息技术有限公司 基于中频触发实现多采集模块宽带校准的测向系统及方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0608024B1 (fr) * 1993-01-20 2001-04-18 Koninklijke Philips Electronics N.V. Système de transmission avec récupération de rythme
GB2278257B (en) * 1993-05-05 1996-10-02 British Broadcasting Corp Receiving equipment for digital transmissions
DE69534067T2 (de) * 1994-05-09 2006-04-13 Victor Company of Japan, Ltd., Yokohama Einstellung eines Referenzunterträgers bei Mehrträgerübertragung
SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
EP0772332A3 (en) * 1995-11-02 2000-10-11 British Broadcasting Corporation Synchronisation of OFDM signals

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1314747B (zh) * 2000-02-11 2014-06-18 朗迅科技公司 在无线通信系统中进行上行链路通信的方法和设备
CN1309204C (zh) * 2000-02-23 2007-04-04 株式会社Ntt都科摩 多载波cdma无线电传输系统中信道估测方法以及装置
CN102113231B (zh) * 2008-06-06 2013-09-25 马克西姆综合产品公司 盲信道质量估计器

Also Published As

Publication number Publication date
DE69703016D1 (de) 2000-10-12
GB9622728D0 (en) 1997-01-08
AU737361B2 (en) 2001-08-16
AR008910A1 (es) 2000-02-23
IL122020A0 (en) 1998-03-10
ID19373A (id) 1998-07-02
CA2199111A1 (en) 1998-04-30
EP0840485A2 (en) 1998-05-06
GB9720550D0 (en) 1997-11-26
EP0840485B1 (en) 2000-09-06
EP0840485A3 (en) 1998-06-10
SG55399A1 (en) 1998-12-21
AU3991697A (en) 1998-05-07
IL122020A (en) 2000-11-21
DE69703016T2 (de) 2001-04-05
GB2318953A (en) 1998-05-06
KR19980033375A (ko) 1998-07-25
JPH10150428A (ja) 1998-06-02
AR008906A1 (es) 2000-02-23
ATE196218T1 (de) 2000-09-15
JP4142758B2 (ja) 2008-09-03

Similar Documents

Publication Publication Date Title
CN1181673A (zh) 在使用正交频分多路复用的接收机中的定时同步
US5953311A (en) Timing synchronization in a receiver employing orthogonal frequency division multiplexing
CN1221096C (zh) 正交频分复用通信系统中的信道估计方法
US6438173B1 (en) Multicarrier transmission system for irregular transmission of data blocks
CN1123997C (zh) 正交频分多路复用接收机的均衡方法和均衡器
EP1924040A2 (en) Channel estimation device
CN1770754A (zh) 用于在通信系统中估计载波干扰噪声比的设备和方法
JP2000503494A (ja) 多重搬送波信号の受信機の時間的同期方法とその装置
CN101909024B (zh) 最大多普勒频偏的估计方法和装置
JP2001237798A (ja) Ｏｆｄｍ用受信装置
CN1354581A (zh) 正交频分多路传输信号接收装置
CN1874335A (zh) 信号时序同步的方法以及同步电路
CN101494631A (zh) 估计信道脉冲响应的装置及方法
JP3084368B1 (ja) Ｏｆｄｍ用受信装置
CN101478506A (zh) 信道估计方法与信道估计装置
KR20020075570A (ko) 직교 주파수 분할 다중 접속에 기반한 데이타 통신 장치및 방법
CN1791077A (zh) 一种时域和频域联合信道估计的方法
CN1434587A (zh) 正交频分复用调制系统的同步方法和设备
KR20020096755A (ko) 직교 주파수 분할 다중 전송 시스템에서의 훈련 심볼 결정방법과 주파수 옵셋 추정 방법 및 장치
EP2704383B1 (en) Method and device for improving a home network making use of an adaptive guard interval
JP2008206053A (ja) 無線通信方法および無線通信装置
KR100647079B1 (ko) 주파수 다중 분할 방식 무선 모뎀의 이산 푸리에 변환 기반채널 추정 방법
US6751263B1 (en) Method for the orthogonal frequency division modulation and demodulation
Park et al. A joint denoising and channel smoothing algorithm in time-domain
CN114124624B (zh) 一种基于导频的信道估计方法及系统

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication
REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1008282

Country of ref document: HK