SE503522C2 - Förfarande och anordning för kanalestimering - Google Patents

Förfarande och anordning för kanalestimering

Info

Publication number
SE503522C2
SE503522C2 SE9403724A SE9403724A SE503522C2 SE 503522 C2 SE503522 C2 SE 503522C2 SE 9403724 A SE9403724 A SE 9403724A SE 9403724 A SE9403724 A SE 9403724A SE 503522 C2 SE503522 C2 SE 503522C2
Authority
SE
Sweden
Prior art keywords
channel estimate
pin
estimate
pins
additional channel
Prior art date
Application number
SE9403724A
Other languages
English (en)
Swedish (sv)
Other versions
SE9403724L (sv
SE9403724D0 (sv
Inventor
Johan Skoeld
Linus Ericsson
Per-Olof Eriksson
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
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9403724A priority Critical patent/SE503522C2/sv
Publication of SE9403724D0 publication Critical patent/SE9403724D0/xx
Priority to EP95936824A priority patent/EP0789955B1/en
Priority to CN95196997.8A priority patent/CN1092873C/zh
Priority to KR1019970702834A priority patent/KR100256919B1/ko
Priority to DE69527436T priority patent/DE69527436T2/de
Priority to PCT/SE1995/001275 priority patent/WO1996013910A1/en
Priority to CA002204135A priority patent/CA2204135C/en
Priority to JP51449996A priority patent/JP3636366B2/ja
Priority to MX9703119A priority patent/MX9703119A/es
Priority to AU38619/95A priority patent/AU695989B2/en
Priority to US08/836,056 priority patent/US5903610A/en
Publication of SE9403724L publication Critical patent/SE9403724L/
Publication of SE503522C2 publication Critical patent/SE503522C2/sv
Priority to FI971827A priority patent/FI114765B/fi

Links

Classifications

    • 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
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Communication Control (AREA)
SE9403724A 1994-10-31 1994-10-31 Förfarande och anordning för kanalestimering SE503522C2 (sv)

Priority Applications (12)

Application Number Priority Date Filing Date Title
SE9403724A SE503522C2 (sv) 1994-10-31 1994-10-31 Förfarande och anordning för kanalestimering
US08/836,056 US5903610A (en) 1994-10-31 1995-10-27 Method and apparatus for channel estimation
CA002204135A CA2204135C (en) 1994-10-31 1995-10-27 Method and apparatus for channel estimation
CN95196997.8A CN1092873C (zh) 1994-10-31 1995-10-27 用于信道估值的方法和装置
KR1019970702834A KR100256919B1 (ko) 1994-10-31 1995-10-27 채널추정을 위한 방법 및 장치
DE69527436T DE69527436T2 (de) 1994-10-31 1995-10-27 Verfahren und einrichtung zur kanalschätzung
PCT/SE1995/001275 WO1996013910A1 (en) 1994-10-31 1995-10-27 Method and apparatus for channel estimation
EP95936824A EP0789955B1 (en) 1994-10-31 1995-10-27 Method and apparatus for channel estimation
JP51449996A JP3636366B2 (ja) 1994-10-31 1995-10-27 チャネル予測方法及び装置
MX9703119A MX9703119A (es) 1994-10-31 1995-10-27 Metodo y aparato para calculo de canal.
AU38619/95A AU695989B2 (en) 1994-10-31 1995-10-27 Method and apparatus for channel estimation
FI971827A FI114765B (fi) 1994-10-31 1997-04-29 Menetelmä ja laite kanavan estimointiin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9403724A SE503522C2 (sv) 1994-10-31 1994-10-31 Förfarande och anordning för kanalestimering

Publications (3)

Publication Number Publication Date
SE9403724D0 SE9403724D0 (sv) 1994-10-31
SE9403724L SE9403724L (sv) 1996-05-01
SE503522C2 true SE503522C2 (sv) 1996-07-01

Family

ID=20395799

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9403724A SE503522C2 (sv) 1994-10-31 1994-10-31 Förfarande och anordning för kanalestimering

Country Status (12)

Country Link
US (1) US5903610A (es)
EP (1) EP0789955B1 (es)
JP (1) JP3636366B2 (es)
KR (1) KR100256919B1 (es)
CN (1) CN1092873C (es)
AU (1) AU695989B2 (es)
CA (1) CA2204135C (es)
DE (1) DE69527436T2 (es)
FI (1) FI114765B (es)
MX (1) MX9703119A (es)
SE (1) SE503522C2 (es)
WO (1) WO1996013910A1 (es)

Families Citing this family (45)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9601659D0 (sv) * 1996-04-30 1996-04-30 Diabact Ab Diagnostisk läkemedelsberedning
AU688231B1 (en) 1997-03-12 1998-03-05 Nokia Telecommunications Oy Estimating CIR using correlation with line removal
JP3275779B2 (ja) * 1997-06-16 2002-04-22 日本電気株式会社 遅延判定帰還型系列推定受信装置
US6539050B1 (en) 1997-06-26 2003-03-25 Hughes Electronics Corporation Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission
US6396822B1 (en) * 1997-07-15 2002-05-28 Hughes Electronics Corporation Method and apparatus for encoding data for transmission in a communication system
US6510147B1 (en) 1997-07-15 2003-01-21 Hughes Electronics Corporation Method and apparatus for orthogonally overlaying variable chip rate spread spectrum signals
US6084862A (en) * 1997-09-26 2000-07-04 Telefonaktiebolaget Lm Ericsson Time dispersion measurement in radio communications systems
GB9810686D0 (en) * 1998-05-19 1998-07-15 King S College London Dual direction estimator
GB2339120B (en) * 1998-06-30 2003-03-19 Nec Technologies Channel estimation device for digital telecommunications stations
US6263030B1 (en) * 1998-07-01 2001-07-17 Ericsson Inc. Equalizer with channel tracker switching
US6373888B1 (en) 1998-10-09 2002-04-16 Telefonaktiebolaget Lm Ericsson (Publ) Estimated channel with variable number of taps
DK0998054T3 (da) * 1998-10-27 2002-04-08 Bosch Gmbh Robert Fremgangsmåde til estimering af et impulssvar af en signaltransmissionskanal og en mobil station
US6507602B1 (en) * 1999-01-07 2003-01-14 Ericsson, Inc. Smoothing receiver channel estimates using spectral estimation
JP2000236284A (ja) * 1999-02-15 2000-08-29 Sony Corp 相関検出装置及び方法
FR2790343B1 (fr) * 1999-02-26 2001-06-01 Thomson Csf Systeme pour l'estimation du gain complexe d'un canal de transmission
US6542560B1 (en) * 1999-04-23 2003-04-01 Lucent Technologies Inc. Method of channel estimation and compensation based thereon
US6614857B1 (en) * 1999-04-23 2003-09-02 Lucent Technologies Inc. Iterative channel estimation and compensation based thereon
DE19920819C1 (de) * 1999-05-06 2000-10-26 Bosch Gmbh Robert Verfahren und Vorrichtung zur Schätzung von gedächtnisbehafteten Übertragungskanälen
US6674815B2 (en) * 1999-06-16 2004-01-06 Ericsson, Inc Method for symbol-spaced estimation and/or tracking of a fractionally-spaced fading radio channel
US6463107B1 (en) 1999-07-01 2002-10-08 Telefonaktiebolaget Lm Ericsson (Publ) Methods and apparatuses for synchronization and modulation type detection
US6208842B1 (en) * 1999-09-30 2001-03-27 Motorola Inc. Method and apparatus for estimating a channel parameter
US6628706B1 (en) 1999-12-06 2003-09-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for transforming a channel estimate
EP1168739B1 (fr) * 2000-06-23 2005-10-19 STMicroelectronics N.V. Procédé et dispositif d'estimation de la réponse impulsionelle d'un canal de transmission d'informations, en particulier pour un téléphone mobile cellulaire
US6907092B1 (en) * 2000-07-14 2005-06-14 Comsys Communication & Signal Processing Ltd. Method of channel order selection and channel estimation in a wireless communication system
US6970520B1 (en) 2000-11-13 2005-11-29 Telefonaktiebolaget Lm Ericsson (Publ) Methods and systems for accumulating metrics generated by a sequence estimation algorithm
US20020172166A1 (en) * 2001-03-22 2002-11-21 Huseyin Arslan Communications system and method for measuring short-term and long-term channel characteristics
US20020173286A1 (en) * 2001-04-06 2002-11-21 Bengt Lindoff Radiocommunication employing selected synchronization technique
US7035353B2 (en) * 2001-10-24 2006-04-25 Zenith Electronics Corporation Channel estimation method blending correlation and least-squares based approaches
SG108861A1 (en) * 2002-07-18 2005-02-28 Oki Techno Ct Singapore Pte High rate receiver
FR2848361B1 (fr) * 2002-12-04 2005-02-18 Nortel Networks Ltd Procede de detection d'un signal et systeme recepteur pour la mise en oeuvre du procede
FR2848360B1 (fr) * 2002-12-04 2005-08-26 Nortel Networks Ltd Procede de detection d'un signal et systeme recepteur pour la mise en oeuvre du procede
US7065371B1 (en) * 2003-02-20 2006-06-20 Comsys Communication & Signal Processing Ltd. Channel order selection and channel estimation in wireless communication system
US8149960B2 (en) * 2003-05-23 2012-04-03 Zenith Electronics Llc Channel estimation for frequency selective multipath channels with long delay spreads based on an assumed physical channel
US7260055B2 (en) * 2003-05-30 2007-08-21 Agency For Science, Technology, And Research Method for reducing channel estimation error in an OFDM system
DE10326283A1 (de) * 2003-06-11 2005-01-13 Siemens Ag Verfahren zur Bestimmung von Kanalkoeffizienten eines Datenübertragungskanals
KR20050040615A (ko) * 2003-10-29 2005-05-03 삼성전자주식회사 훈련열 데이터를 이용하여 채널을 추정하는 디지털수신기를 위한 채널 추정 장치 및 그 방법
WO2005099399A2 (en) 2004-04-09 2005-10-27 Micronas Semiconductors, Inc. Apparatus for and method of controlling sampling frequency and sampling phase of a sampling device
US7995648B2 (en) * 2004-04-09 2011-08-09 Trident Microsystems (Far East) Ltd. Advanced digital receiver
US7580454B2 (en) * 2004-07-14 2009-08-25 Fundacion Tarpuy Multidimensional decision-directed trained adaptive equalization
WO2006020950A1 (en) * 2004-08-12 2006-02-23 Micronas Semiconductors, Inc. Automatic gain control unit of a receiver
US7844232B2 (en) * 2005-05-25 2010-11-30 Research In Motion Limited Joint space-time optimum filters (JSTOF) with at least one antenna, at least one channel, and joint filter weight and CIR estimation
US8107517B2 (en) * 2005-12-09 2012-01-31 Qualcomm Incorporated Average-tap energy based thresholding for channel estimation in multi antenna systems
KR101531557B1 (ko) * 2008-10-20 2015-06-26 삼성전자주식회사 이동통신 시스템의 채널 추정 장치 및 방법
US8761274B2 (en) * 2009-02-04 2014-06-24 Acorn Technologies, Inc. Least squares channel identification for OFDM systems
US9036722B2 (en) * 2010-10-07 2015-05-19 Centre Of Excellence In Wireless Technology Robust channel estimation and interpolation

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE464902B (sv) * 1989-10-24 1991-06-24 Ericsson Telefon Ab L M Foerfarande att adaptera en viterbialgoritm till en kanal med skiftande oeverfoeringsegenskaper samt en anordning foer genomfoerande av foerfarandet
DE4001592A1 (de) * 1989-10-25 1991-05-02 Philips Patentverwaltung Empfaenger fuer digitales uebertragungssystem
SE465245B (sv) * 1989-12-22 1991-08-12 Ericsson Telefon Ab L M Foerfarande att utfoera kanalestimering foer en faedande kanal vid oeverfoering av symbolsekvenser
US5251233A (en) * 1990-12-20 1993-10-05 Motorola, Inc. Apparatus and method for equalizing a corrupted signal in a receiver
SE469052B (sv) * 1991-09-10 1993-05-03 Ericsson Telefon Ab L M Foerfarande att bilda ett kanalestimat foer en tidsvarierande radiokanal
JP2748743B2 (ja) * 1991-10-01 1998-05-13 日本電気株式会社 データ受信方式
SE469678B (sv) * 1992-01-13 1993-08-16 Ericsson Telefon Ab L M Saett foer synkronisering och kanalestimering i tdma- radiosystem
SE470371B (sv) * 1992-06-23 1994-01-31 Ericsson Telefon Ab L M Sätt och anordning vid digital signalöverföring att hos en mottagare estimera överförda symboler
SE513422C2 (sv) * 1992-08-21 2000-09-11 Ericsson Telefon Ab L M Förfarande för bildande av kvalitetsmått för signalskurar
FR2696604B1 (fr) * 1992-10-07 1994-11-04 Alcatel Radiotelephone Dispositif d'estimation d'un canal de transmission.
US5581580A (en) * 1993-05-20 1996-12-03 Telefonaktiebolaget Lm Ericsson Low complexity model based channel estimation algorithm for fading channels
SE513657C2 (sv) * 1993-06-24 2000-10-16 Ericsson Telefon Ab L M Sätt och anordning att vid digital signalöverföring estimera överförda symboler hos en mottagare
US5754599A (en) * 1996-01-04 1998-05-19 Motorola, Inc. Method and apparatus for coherent channel estimation in a communication system

Also Published As

Publication number Publication date
JPH10508445A (ja) 1998-08-18
EP0789955A1 (en) 1997-08-20
WO1996013910A1 (en) 1996-05-09
FI114765B (fi) 2004-12-15
CN1171176A (zh) 1998-01-21
AU695989B2 (en) 1998-08-27
CA2204135C (en) 2005-05-03
SE9403724L (sv) 1996-05-01
EP0789955B1 (en) 2002-07-17
KR100256919B1 (ko) 2000-05-15
MX9703119A (es) 1997-06-28
AU3861995A (en) 1996-05-23
US5903610A (en) 1999-05-11
FI971827A (fi) 1997-06-26
CA2204135A1 (en) 1996-05-09
CN1092873C (zh) 2002-10-16
SE9403724D0 (sv) 1994-10-31
JP3636366B2 (ja) 2005-04-06
DE69527436T2 (de) 2003-01-16
FI971827A0 (fi) 1997-04-29
DE69527436D1 (de) 2002-08-22

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