ATE400954T1 - Kanalschätzung mit verminderter komplexität in ofdm-systemen - Google Patents

Kanalschätzung mit verminderter komplexität in ofdm-systemen

Info

Publication number
ATE400954T1
ATE400954T1 AT06724115T AT06724115T ATE400954T1 AT E400954 T1 ATE400954 T1 AT E400954T1 AT 06724115 T AT06724115 T AT 06724115T AT 06724115 T AT06724115 T AT 06724115T AT E400954 T1 ATE400954 T1 AT E400954T1
Authority
AT
Austria
Prior art keywords
carrier frequencies
doppler spread
estimated
channel
channel estimation
Prior art date
Application number
AT06724115T
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 US11/110,840 external-priority patent/US7602852B2/en
Priority claimed from US11/110,668 external-priority patent/US7599453B2/en
Priority claimed from US11/110,838 external-priority patent/US7474611B2/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE400954T1 publication Critical patent/ATE400954T1/de

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)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
AT06724115T 2005-04-21 2006-04-07 Kanalschätzung mit verminderter komplexität in ofdm-systemen ATE400954T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
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
US11/110,838 US7474611B2 (en) 2005-04-21 2005-04-21 Reduced complexity channel estimation in OFDM systems

Publications (1)

Publication Number Publication Date
ATE400954T1 true ATE400954T1 (de) 2008-07-15

Family

ID=36589141

Family Applications (2)

Application Number Title Priority Date Filing Date
AT06724115T ATE400954T1 (de) 2005-04-21 2006-04-07 Kanalschätzung mit verminderter komplexität in ofdm-systemen
AT06724116T ATE444634T1 (de) 2005-04-21 2006-04-07 Doppler-spreizungsschätzung für ofdm-systeme

Family Applications After (1)

Application Number Title Priority Date Filing Date
AT06724116T ATE444634T1 (de) 2005-04-21 2006-04-07 Doppler-spreizungsschätzung für ofdm-systeme

Country Status (10)

Country Link
EP (3) EP1875694B1 (de)
JP (3) JP4856171B2 (de)
KR (2) KR101256696B1 (de)
AT (2) ATE400954T1 (de)
DE (2) DE602006009496D1 (de)
ES (2) ES2308738T3 (de)
HK (1) HK1123139A1 (de)
PL (1) PL1875696T3 (de)
TW (1) TW200707991A (de)
WO (3) WO2006111277A1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101256696B1 (ko) * 2005-04-21 2013-04-19 텔레폰악티에볼라겟엘엠에릭슨(펍) Ｏｆｄｍ 시스템에서의 감소된 복잡성 채널 추정
US7907673B2 (en) * 2006-10-26 2011-03-15 Telefonaktiebolaget L M Ericsson (Publ) Robust and low-complexity combined signal power estimation
US7957481B2 (en) 2007-04-26 2011-06-07 Nanoradio Ab Method and an apparatus for estimating a delay spread of a multipath channel
EP1988676B1 (de) * 2007-05-03 2019-02-20 Telefonaktiebolaget LM Ericsson (publ) Bestimmung eines frequenzfehlers bei einem empfänger eines drahtlosen ofdm-kommunikationssystems
EP2071784B1 (de) 2007-12-10 2013-05-22 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Verfahren und Vorrichtung zur Beurteilung der Verzögerungsstreuung
EP2071787B1 (de) 2007-12-10 2013-03-13 TELEFONAKTIEBOLAGET LM ERICSSON (publ) Verfahren und Vorrichtung zur Anordnung eines FFT-Fensters in einem OFDM-Empfänger
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
EP2264922B1 (de) * 2008-04-11 2019-06-05 Panasonic Intellectual Property Management Co., Ltd. Empfänger, integrierte schaltung, digitaler fernsehempfänger, empfangsverfahren und empfangsprogramm
EP2182754B1 (de) 2008-10-30 2014-01-15 Telefonaktiebolaget LM Ericsson (publ) Verfahren und Empfänger zur Schätzung und Berichterstattung eines Kanalqualitätsmaßes
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 (de) 2012-06-28 2016-12-21 Telefonaktiebolaget LM Ericsson (publ) Kanalstreuungsschätzung
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
US6771591B1 (en) * 2000-07-31 2004-08-03 Thomson Licensing S.A. Method and system for processing orthogonal frequency division multiplexed signals
JP4511714B2 (ja) * 2000-12-05 2010-07-28 パナソニック株式会社 Ｏｆｄｍ受信装置
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Also Published As

Publication number Publication date
TW200707991A (en) 2007-02-16
EP1875697A2 (de) 2008-01-09
DE602006009496D1 (de) 2009-11-12
ES2308738T3 (es) 2008-12-01
PL1875696T3 (pl) 2010-03-31
EP1875696B1 (de) 2009-09-30
DE602006001747D1 (de) 2008-08-21
JP4856171B2 (ja) 2012-01-18
JP4917595B2 (ja) 2012-04-18
EP1875694B1 (de) 2008-07-09
KR20080003438A (ko) 2008-01-07
ATE444634T1 (de) 2009-10-15
JP2008537415A (ja) 2008-09-11
WO2006111275A2 (en) 2006-10-26
WO2006111276A1 (en) 2006-10-26
KR20080003349A (ko) 2008-01-07
EP1875697B1 (de) 2012-08-15
EP1875694A1 (de) 2008-01-09
WO2006111275A3 (en) 2007-01-04
KR101256696B1 (ko) 2013-04-19
WO2006111277A1 (en) 2006-10-26
JP2008537416A (ja) 2008-09-11
EP1875696A1 (de) 2008-01-09
ES2334383T3 (es) 2010-03-09
JP2008537417A (ja) 2008-09-11
HK1123139A1 (en) 2009-06-05

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