HK1123139A1 - Reduced complexity channel estimation in ofdm systems ofdm - Google Patents

Reduced complexity channel estimation in ofdm systems ofdm

Info

Publication number
HK1123139A1
HK1123139A1 HK09100299.9A HK09100299A HK1123139A1 HK 1123139 A1 HK1123139 A1 HK 1123139A1 HK 09100299 A HK09100299 A HK 09100299A HK 1123139 A1 HK1123139 A1 HK 1123139A1
Authority
HK
Hong Kong
Prior art keywords
ofdm
carrier frequencies
doppler spread
estimated
channel estimation
Prior art date
Application number
HK09100299.9A
Other languages
English (en)
Inventor
Jim Svensson
Leif Wilhelmsson
Original Assignee
Ericsson Telefon Ab L M
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
Priority claimed from US11/110,838 external-priority patent/US7474611B2/en
Priority claimed from US11/110,840 external-priority patent/US7602852B2/en
Priority claimed from US11/110,668 external-priority patent/US7599453B2/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of HK1123139A1 publication Critical patent/HK1123139A1/xx

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
    • 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
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04L25/022—Channel estimation of frequency response
    • 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
    • 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
    • H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
    • 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
    • H04L25/0216—Channel estimation of impulse response with estimation of channel length
    • 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
    • H04L25/0234—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols by interpolation between sounding signals by non-linear interpolation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
HK09100299.9A 2005-04-21 2009-01-12 Reduced complexity channel estimation in ofdm systems ofdm HK1123139A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US11/110,838 US7474611B2 (en) 2005-04-21 2005-04-21 Reduced complexity channel estimation in OFDM systems
US11/110,840 US7602852B2 (en) 2005-04-21 2005-04-21 Initial parameter estimation in OFDM systems
US11/110,668 US7599453B2 (en) 2005-04-21 2005-04-21 Doppler spread estimation for OFDM systems
PCT/EP2006/003174 WO2006111276A1 (en) 2005-04-21 2006-04-07 Reduced complexity channel estimation in ofdm systems

Publications (1)

Publication Number Publication Date
HK1123139A1 true HK1123139A1 (en) 2009-06-05

Family

ID=36589141

Family Applications (1)

Application Number Title Priority Date Filing Date
HK09100299.9A HK1123139A1 (en) 2005-04-21 2009-01-12 Reduced complexity channel estimation in ofdm systems ofdm

Country Status (10)

Country Link
EP (3) EP1875697B1 (xx)
JP (3) JP2008537415A (xx)
KR (2) KR101256696B1 (xx)
AT (2) ATE444634T1 (xx)
DE (2) DE602006009496D1 (xx)
ES (2) ES2308738T3 (xx)
HK (1) HK1123139A1 (xx)
PL (1) PL1875696T3 (xx)
TW (1) TW200707991A (xx)
WO (3) WO2006111275A2 (xx)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
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ES2308738T3 (es) * 2005-04-21 2008-12-01 Telefonaktiebolaget Lm Ericsson (Publ) Estimacion de canal de complejidad reducida en sistemas ofdm.
US7907673B2 (en) * 2006-10-26 2011-03-15 Telefonaktiebolaget L M Ericsson (Publ) Robust and low-complexity combined signal power estimation
JP5347203B2 (ja) * 2007-04-26 2013-11-20 三星電子株式会社 マルチパスチャネルの遅延スプレッドを推定する方法及び装置
EP1988676B1 (en) * 2007-05-03 2019-02-20 Telefonaktiebolaget LM Ericsson (publ) Determining a frequency error in a receiver of an wireless ofdm communications system
EP2071787B1 (en) * 2007-12-10 2013-03-13 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method and apparatus for positioning an FFT- window in an OFDM-receiver
EP2071784B1 (en) 2007-12-10 2013-05-22 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Method and apparatus for delay spread estimation
CN101212433B (zh) * 2007-12-25 2011-12-28 北京创毅视讯科技有限公司 一种信道估计方法及信道估计装置
WO2009125592A1 (ja) * 2008-04-11 2009-10-15 パナソニック株式会社 受信装置、集積回路、デジタルテレビ受像機、受信方法、及び受信プログラム
EP2182754B1 (en) 2008-10-30 2014-01-15 Telefonaktiebolaget LM Ericsson (publ) Method and receiver for estimating and reporting a channel quality measure
KR101067558B1 (ko) * 2009-10-13 2011-09-27 성균관대학교산학협력단 주파수 옵셋 추정 장치 및 주파수 옵셋 추정 방법
JP4975085B2 (ja) * 2009-11-09 2012-07-11 三菱電機株式会社 受信装置および方法
CN101925173B (zh) * 2010-09-07 2012-11-28 上海交通大学 正交频分复用系统的定时同步方法
EP2680517B1 (en) 2012-06-28 2016-12-21 Telefonaktiebolaget LM Ericsson (publ) Channel spread estimation
DE102020202890B3 (de) * 2020-03-06 2021-07-08 Continental Automotive Gmbh Verfahren und Kommunikationsvorrichtung zum Kompensieren von Doppler-Effekten in empfangenen drahtlosen Kommunikationssignalen

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FR2743967B1 (fr) * 1996-01-18 1998-03-27 France Telecom Procede et dispositif de synchronisation temporelle d'un recepteur d'un signal multiporteuse
JP3851017B2 (ja) * 1999-04-06 2006-11-29 日本放送協会 Ｏｆｄｍ復調装置
GB2353680A (en) * 1999-08-27 2001-02-28 Mitsubishi Electric Inf Tech OFDM frame synchronisation
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Also Published As

Publication number Publication date
EP1875697A2 (en) 2008-01-09
WO2006111275A2 (en) 2006-10-26
JP4917595B2 (ja) 2012-04-18
WO2006111277A1 (en) 2006-10-26
DE602006001747D1 (de) 2008-08-21
KR101256696B1 (ko) 2013-04-19
EP1875694A1 (en) 2008-01-09
EP1875696A1 (en) 2008-01-09
WO2006111276A1 (en) 2006-10-26
ES2308738T3 (es) 2008-12-01
EP1875697B1 (en) 2012-08-15
ATE400954T1 (de) 2008-07-15
KR20080003438A (ko) 2008-01-07
EP1875694B1 (en) 2008-07-09
JP2008537415A (ja) 2008-09-11
TW200707991A (en) 2007-02-16
KR20080003349A (ko) 2008-01-07
DE602006009496D1 (de) 2009-11-12
ES2334383T3 (es) 2010-03-09
WO2006111275A3 (en) 2007-01-04
PL1875696T3 (pl) 2010-03-31
ATE444634T1 (de) 2009-10-15
JP2008537417A (ja) 2008-09-11
EP1875696B1 (en) 2009-09-30
JP4856171B2 (ja) 2012-01-18
JP2008537416A (ja) 2008-09-11

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)

Effective date: 20210401