WO2005004338A3 - Reduced complexity sliding window based equalizer - Google Patents

Reduced complexity sliding window based equalizer Download PDF

Info

Publication number
WO2005004338A3
WO2005004338A3 PCT/US2004/020427 US2004020427W WO2005004338A3 WO 2005004338 A3 WO2005004338 A3 WO 2005004338A3 US 2004020427 W US2004020427 W US 2004020427W WO 2005004338 A3 WO2005004338 A3 WO 2005004338A3
Authority
WO
WIPO (PCT)
Prior art keywords
sliding window
handling
window based
reduced complexity
window
Prior art date
Application number
PCT/US2004/020427
Other languages
French (fr)
Other versions
WO2005004338A2 (en
Inventor
Alexander Reznik
Rui Yang
Bin Li
Ariela Zeira
Original Assignee
Interdigital Tech Corp
Alexander Reznik
Rui Yang
Bin Li
Ariela Zeira
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 Interdigital Tech Corp, Alexander Reznik, Rui Yang, Bin Li, Ariela Zeira filed Critical Interdigital Tech Corp
Priority to JP2006517665A priority Critical patent/JP4213747B2/en
Priority to CN2004800155844A priority patent/CN101048934B/en
Priority to CA002530518A priority patent/CA2530518A1/en
Priority to MXPA05013518A priority patent/MXPA05013518A/en
Priority to EP04756111A priority patent/EP1636900A4/en
Publication of WO2005004338A2 publication Critical patent/WO2005004338A2/en
Publication of WO2005004338A3 publication Critical patent/WO2005004338A3/en
Priority to NO20060421A priority patent/NO20060421L/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03305—Joint sequence estimation and interference removal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7105—Joint detection techniques, e.g. linear detectors
    • H04B1/71055—Joint detection techniques, e.g. linear detectors using minimum mean squared error [MMSE] 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03331—Arrangements for the joint estimation of multiple sequences
    • 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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03993—Noise whitening

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The present invention has many aspects. One aspect of the invention is to perform equalization using a sliding window approach. A second aspect reuses information derived for each window for use by a subsequent window. A third aspect utilizes a discrete Fourier transform based approach for the equalization. A fourth aspect relates to handling oversampling of the received signals and channel responses. A fifth aspect relates to handling multiple reception antennas. A sixth embodiment relates to handling both oversampling and multiple reception antennas.
PCT/US2004/020427 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer WO2005004338A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2006517665A JP4213747B2 (en) 2003-06-25 2004-06-24 Sliding window-based equalizer with reduced complexity
CN2004800155844A CN101048934B (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer
CA002530518A CA2530518A1 (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer
MXPA05013518A MXPA05013518A (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer.
EP04756111A EP1636900A4 (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer
NO20060421A NO20060421L (en) 2003-06-25 2006-01-25 Reduced complexity in the sliding window bar smooths

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US48233303P 2003-06-25 2003-06-25
US60/482,333 2003-06-25

Publications (2)

Publication Number Publication Date
WO2005004338A2 WO2005004338A2 (en) 2005-01-13
WO2005004338A3 true WO2005004338A3 (en) 2005-05-12

Family

ID=33563853

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/020427 WO2005004338A2 (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer

Country Status (10)

Country Link
EP (1) EP1636900A4 (en)
JP (1) JP4213747B2 (en)
KR (3) KR100937465B1 (en)
CN (1) CN101048934B (en)
AR (1) AR044904A1 (en)
CA (1) CA2530518A1 (en)
MX (1) MXPA05013518A (en)
NO (1) NO20060421L (en)
TW (3) TW200818790A (en)
WO (1) WO2005004338A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7570689B2 (en) * 2005-02-14 2009-08-04 Interdigital Technology Corporation Advanced receiver with sliding window block linear equalizer
US8064556B2 (en) 2005-09-15 2011-11-22 Qualcomm Incorporated Fractionally-spaced equalizers for spread spectrum wireless communication
US7929597B2 (en) * 2005-11-15 2011-04-19 Qualcomm Incorporated Equalizer for a receiver in a wireless communication system
CN100405865C (en) * 2006-07-19 2008-07-23 北京天碁科技有限公司 TD-SCDMA terminal and its same-frequency cell time delay and power detecting method
EP2076969A4 (en) * 2006-10-27 2013-01-30 Ericsson Telefon Ab L M A mehtod for simplifying the calculatinos for pre-whitening in a g-rake receiver
KR101446927B1 (en) * 2013-04-04 2014-10-06 전북대학교산학협력단 Channel Estimation Method and System for Massive MIMO Based on Circulant Jacket Matrices
CN106452670B (en) * 2016-09-22 2020-04-03 江苏卓胜微电子股份有限公司 Low-complexity sliding window processing method
CN107678011B (en) * 2017-09-28 2020-08-18 天津大学 Full waveform data real-time uploading processing method applied to laser measurement system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6674919B1 (en) * 1999-09-21 2004-01-06 Matsushita Electric Industrial Co., Ltd. Method for determining the skew angle of a two-dimensional barcode
US6700919B1 (en) * 1999-11-30 2004-03-02 Texas Instruments Incorporated Channel estimation for communication system using weighted estimates based on pilot data and information data

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5047859A (en) * 1990-10-09 1991-09-10 North American Philips Corporation Method and apparatus for communication channel identification and signal restoration
US6185251B1 (en) * 1998-03-27 2001-02-06 Telefonaktiebolaget Lm Ericsson Equalizer for use in multi-carrier modulation systems
TW491879B (en) * 1999-05-13 2002-06-21 Sumitomo Chemical Co Liquid crystal polyester resin composition and molded article
TW540200B (en) * 2000-11-09 2003-07-01 Interdigital Tech Corp Single user detection
KR100399057B1 (en) * 2001-08-07 2003-09-26 한국전자통신연구원 Apparatus for Voice Activity Detection in Mobile Communication System and Method Thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6674919B1 (en) * 1999-09-21 2004-01-06 Matsushita Electric Industrial Co., Ltd. Method for determining the skew angle of a two-dimensional barcode
US6700919B1 (en) * 1999-11-30 2004-03-02 Texas Instruments Incorporated Channel estimation for communication system using weighted estimates based on pilot data and information data

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
GUSTAVSON F.G. ET AL.: "Fast algorithm for solving Toeplitz systems of equations", IBM TECHNICAL DISCLOSURE BULLETIN, vol. 22, no. 12, May 1980 (1980-05-01), pages 5582 - 5586, XP008044329 *
See also references of EP1636900A4 *

Also Published As

Publication number Publication date
JP2007525081A (en) 2007-08-30
MXPA05013518A (en) 2006-03-09
TW200507552A (en) 2005-02-16
KR20090079265A (en) 2009-07-21
KR100937467B1 (en) 2010-01-19
KR100768737B1 (en) 2007-10-22
EP1636900A2 (en) 2006-03-22
KR20060057634A (en) 2006-05-26
EP1636900A4 (en) 2007-04-18
KR100937465B1 (en) 2010-01-19
CN101048934A (en) 2007-10-03
TW200537868A (en) 2005-11-16
WO2005004338A2 (en) 2005-01-13
NO20060421L (en) 2006-03-23
TW200818790A (en) 2008-04-16
KR20060063803A (en) 2006-06-12
TWI257793B (en) 2006-07-01
JP4213747B2 (en) 2009-01-21
CA2530518A1 (en) 2005-01-13
AR044904A1 (en) 2005-10-05
CN101048934B (en) 2010-09-08

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