EP1825625A4 - Procede d'estimation du decalage temps/frequence et appareil utilisant ce procede dans un systeme de communication ofdm - Google Patents

Procede d'estimation du decalage temps/frequence et appareil utilisant ce procede dans un systeme de communication ofdm

Info

Publication number
EP1825625A4
EP1825625A4 EP05780670A EP05780670A EP1825625A4 EP 1825625 A4 EP1825625 A4 EP 1825625A4 EP 05780670 A EP05780670 A EP 05780670A EP 05780670 A EP05780670 A EP 05780670A EP 1825625 A4 EP1825625 A4 EP 1825625A4
Authority
EP
European Patent Office
Prior art keywords
communication system
same
time offset
ofdm communication
estimating frequency
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.)
Withdrawn
Application number
EP05780670A
Other languages
German (de)
English (en)
Other versions
EP1825625A1 (fr
Inventor
Hee-Wook Kim
Kun-Seok Kang
Do-Seob Ahn
Ho-Jin Lee
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.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
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 Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Publication of EP1825625A1 publication Critical patent/EP1825625A1/fr
Publication of EP1825625A4 publication Critical patent/EP1825625A4/fr
Withdrawn legal-status Critical Current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
    • H04L27/2647—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
    • H04L27/2657—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
    • H04L27/2602—Signal structure
    • 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
    • H04L27/2659—Coarse or integer frequency offset determination and 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
    • H04L27/266—Fine or fractional frequency offset determination and 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
EP05780670A 2004-12-14 2005-07-21 Procede d'estimation du decalage temps/frequence et appareil utilisant ce procede dans un systeme de communication ofdm Withdrawn EP1825625A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040105798A KR100626644B1 (ko) 2004-12-14 2004-12-14 직교 주파수 분할 다중화 통신시스템에서 주파수 및 시간옵셋 추정 방법과 그를 이용한 장치
PCT/KR2005/002372 WO2006065016A1 (fr) 2004-12-14 2005-07-21 Procede d'estimation du decalage temps/frequence et appareil utilisant ce procede dans un systeme de communication ofdm

Publications (2)

Publication Number Publication Date
EP1825625A1 EP1825625A1 (fr) 2007-08-29
EP1825625A4 true EP1825625A4 (fr) 2013-01-02

Family

ID=36588042

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05780670A Withdrawn EP1825625A4 (fr) 2004-12-14 2005-07-21 Procede d'estimation du decalage temps/frequence et appareil utilisant ce procede dans un systeme de communication ofdm

Country Status (3)

Country Link
EP (1) EP1825625A4 (fr)
KR (1) KR100626644B1 (fr)
WO (1) WO2006065016A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100486238C (zh) * 2005-03-21 2009-05-06 东南大学 基于可调时频训练序列的低复杂度频偏估计方法
KR100758873B1 (ko) * 2005-12-30 2007-09-19 포스데이타 주식회사 무선통신 시스템의 주파수 오프셋 추정 장치 및 방법
KR100852152B1 (ko) 2006-12-08 2008-08-13 한국전자통신연구원 직교 주파수 분할 다중 접속 시스템의 주파수 오프셋 보상장치 및 그 방법
KR101441597B1 (ko) * 2007-06-13 2014-09-24 삼성전자주식회사 고속 퓨리에 변환기 기반 주파수 분할 다중 접속시스템에서 주파수 오차 추정 장치 및 방법
KR101315383B1 (ko) 2007-08-10 2013-10-07 한국과학기술원 Ｇｐｓ 수신기를 사용하지 않는 와이브로 시스템의 소수배주파수 동기 획득 방법 및 장치
CN101312445B (zh) * 2008-05-12 2011-03-16 北京创毅视讯科技有限公司 一种接收机的小数频偏估计方法与装置
CN101582871B (zh) * 2008-05-15 2012-06-20 富士通株式会社 用于ofdm系统接收机的时间频率同步装置和方法
KR101285392B1 (ko) * 2009-12-16 2013-07-10 한국전자통신연구원 멀티캐리어 전송 방식을 사용하는 통신 시스템의 신호 수신장치 및 신호 수신장치의 간섭 제거방법
CN102546485B (zh) * 2010-12-27 2015-04-01 中兴通讯股份有限公司 一种频偏估计的方法及装置
KR101114849B1 (ko) * 2010-12-30 2012-03-07 성균관대학교산학협력단 직교 주파수 분할 다중화 시스템을 위한 동기 방법 및 장치
CN103581072B (zh) * 2013-11-25 2017-02-15 大唐移动通信设备有限公司 多载波系统的频偏估计方法及装置
CN108183841B (zh) * 2017-12-29 2020-07-28 深圳市极致汇仪科技有限公司 综测仪中基于IEEE802.11ah的基带数据处理方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030026295A1 (en) * 2001-06-15 2003-02-06 Motorola, Inc. Method and apparatus for synchronizing an OFDM signal
US20040141457A1 (en) * 2003-01-18 2004-07-22 Bo-Seok Seo Method of determining training signal in OFDM, and apparatus and method for receiving OFDM signal using the training signal

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6097776A (en) 1998-02-12 2000-08-01 Cirrus Logic, Inc. Maximum likelihood estimation of symbol offset
US6678339B1 (en) 2000-02-02 2004-01-13 Agere Systems Inc. Globally optimum maximum likelihood estimation of joint carrier frequency offset and symbol timing error in multi-carrier systems
KR100459429B1 (ko) * 2002-07-19 2004-12-03 엘지전자 주식회사 오에프디엠 시스템의 무선 랜 모뎀을 위한 동기화 방법

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030026295A1 (en) * 2001-06-15 2003-02-06 Motorola, Inc. Method and apparatus for synchronizing an OFDM signal
US20040141457A1 (en) * 2003-01-18 2004-07-22 Bo-Seok Seo Method of determining training signal in OFDM, and apparatus and method for receiving OFDM signal using the training signal

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
See also references of WO2006065016A1 *
VAN DE BEEK J-J ET AL: "ML ESTIMATION OF TIMING AND FREQUENCY OFFSET IN MULTICARRIER SYSTEMS", INTERNET CITATION, April 1996 (1996-04-01), XP003010945, Retrieved from the Internet <URL:http://www.sm.luth.se/csee/sp/research/report/bsb96r.pdf> [retrieved on 20070101] *

Also Published As

Publication number Publication date
KR20060067034A (ko) 2006-06-19
EP1825625A1 (fr) 2007-08-29
KR100626644B1 (ko) 2006-09-21
WO2006065016A1 (fr) 2006-06-22

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