WO2005048497A3 - Method for estimating time varying channels in ofdm (orthogonal frequency division multiplex) multiple transmit antenna system - Google Patents

Method for estimating time varying channels in ofdm (orthogonal frequency division multiplex) multiple transmit antenna system Download PDF

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Publication number
WO2005048497A3
WO2005048497A3 PCT/KR2004/002436 KR2004002436W WO2005048497A3 WO 2005048497 A3 WO2005048497 A3 WO 2005048497A3 KR 2004002436 W KR2004002436 W KR 2004002436W WO 2005048497 A3 WO2005048497 A3 WO 2005048497A3
Authority
WO
WIPO (PCT)
Prior art keywords
ofdm
multiple transmit
frequency division
antenna system
orthogonal frequency
Prior art date
Application number
PCT/KR2004/002436
Other languages
French (fr)
Other versions
WO2005048497A2 (en
Inventor
Yu-Ro Lee
Dae-Sik Hong
Seong-Rag Kim
In-Kyeong Choi
Choong-Il Yeh
Hyoung-Soo Lim
Seong-Chul Cho
Jong-Ee Oh
Dong-Seung Kwon
Jee-Hwan Ahn
Seung-Ku Hwang
Original Assignee
Korea Electronics Telecomm
Samsung Electronics Co Ltd
Kt Corp
Sk Telecom Co Ltd
Kt Freetel Co Ltd
Hanaro Telecom Inc
Yu-Ro Lee
Dae-Sik Hong
Seong-Rag Kim
In-Kyeong Choi
Choong-Il Yeh
Hyoung-Soo Lim
Seong-Chul Cho
Jong-Ee Oh
Dong-Seung Kwon
Jee-Hwan Ahn
Seung-Ku Hwang
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 Korea Electronics Telecomm, Samsung Electronics Co Ltd, Kt Corp, Sk Telecom Co Ltd, Kt Freetel Co Ltd, Hanaro Telecom Inc, Yu-Ro Lee, Dae-Sik Hong, Seong-Rag Kim, In-Kyeong Choi, Choong-Il Yeh, Hyoung-Soo Lim, Seong-Chul Cho, Jong-Ee Oh, Dong-Seung Kwon, Jee-Hwan Ahn, Seung-Ku Hwang filed Critical Korea Electronics Telecomm
Publication of WO2005048497A2 publication Critical patent/WO2005048497A2/en
Publication of WO2005048497A3 publication Critical patent/WO2005048497A3/en

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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
    • 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
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L27/2668—Details of algorithms
    • H04L27/2673—Details of algorithms characterised by synchronisation parameters
    • H04L27/2675—Pilot or known symbols
    • 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
    • H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
    • H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Radio Transmission System (AREA)

Abstract

Disclosed is a time-varying channel estimation method in an OFDM which comprises: (a) generating a pilot symbol by a comb type method for inserting a pilot symbol into a specific subcarrier for each interval in each OFDM symbol; (b) transmitting the pilot symbol to a receiver from a transmitter through a time-varying channel by using at least two multiple transmit antennas; (c) receiving the pilot signal through the time-varying channel; and (d) estimating a first channel of from among the time-varying channel according to an interpolation method which uses a temporal correlation of a second channel and a third channel.
PCT/KR2004/002436 2003-11-13 2004-09-22 Method for estimating time varying channels in ofdm (orthogonal frequency division multiplex) multiple transmit antenna system WO2005048497A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2003-0080232 2003-11-13
KR1020030080232A KR20050046209A (en) 2003-11-13 2003-11-13 A method for a channel estimation at a time-varying channel in an ofdm system with multiple transmit antennas

Publications (2)

Publication Number Publication Date
WO2005048497A2 WO2005048497A2 (en) 2005-05-26
WO2005048497A3 true WO2005048497A3 (en) 2007-11-15

Family

ID=34587899

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/002436 WO2005048497A2 (en) 2003-11-13 2004-09-22 Method for estimating time varying channels in ofdm (orthogonal frequency division multiplex) multiple transmit antenna system

Country Status (2)

Country Link
KR (1) KR20050046209A (en)
WO (1) WO2005048497A2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1756248B (en) * 2004-09-29 2010-06-02 上海贝尔阿尔卡特股份有限公司 MIMO OFDM mobile communication system and channel estimating method
KR100784176B1 (en) * 2006-01-17 2007-12-13 포스데이타 주식회사 Channel estimation method of mobile terminal in radio communication system and channel estimator of enabling the method
WO2009091143A2 (en) * 2008-01-18 2009-07-23 Lg Electronics Inc. Method of pilot subcarrier transmitting
KR101288927B1 (en) * 2011-10-27 2013-07-24 경북대학교 산학협력단 Transmitter and Receiver thereof
US10771289B2 (en) 2016-03-24 2020-09-08 Commonwealth Scientific And Industrial Research Organisation Multi-transmitter channel estimation for a time varying channel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018271A2 (en) * 1996-10-18 1998-04-30 Watkins Johnson Company Wireless communication network using time-varying vector channel equalization for adaptive spatial equalization
WO2002093860A1 (en) * 2001-05-10 2002-11-21 Intel Corporation Channel estimation for orthogonal frequency division multiplexed (ofdm) signals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998018271A2 (en) * 1996-10-18 1998-04-30 Watkins Johnson Company Wireless communication network using time-varying vector channel equalization for adaptive spatial equalization
WO2002093860A1 (en) * 2001-05-10 2002-11-21 Intel Corporation Channel estimation for orthogonal frequency division multiplexed (ofdm) signals

Also Published As

Publication number Publication date
WO2005048497A2 (en) 2005-05-26
KR20050046209A (en) 2005-05-18

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