TW200507552A - Reduced complexity sliding window based equalizer - Google Patents

Reduced complexity sliding window based equalizer

Info

Publication number
TW200507552A
TW200507552A TW093118361A TW93118361A TW200507552A TW 200507552 A TW200507552 A TW 200507552A TW 093118361 A TW093118361 A TW 093118361A TW 93118361 A TW93118361 A TW 93118361A TW 200507552 A TW200507552 A TW 200507552A
Authority
TW
Taiwan
Prior art keywords
sliding window
handling
window based
reduced complexity
window
Prior art date
Application number
TW093118361A
Other languages
Chinese (zh)
Other versions
TWI257793B (en
Inventor
Alexander Reznik
Rui Yang
Bin Li
Ariela Zeira
Original Assignee
Interdigital Tech Corp
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 filed Critical Interdigital Tech Corp
Publication of TW200507552A publication Critical patent/TW200507552A/en
Application granted granted Critical
Publication of TWI257793B publication Critical patent/TWI257793B/en

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
    • H04L25/03—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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/01—Equalisers
    • 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.
TW093118361A 2003-06-25 2004-06-24 Method and apparatus for data estimation in a wireless communications system TWI257793B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US48233303P 2003-06-25 2003-06-25

Publications (2)

Publication Number Publication Date
TW200507552A true TW200507552A (en) 2005-02-16
TWI257793B TWI257793B (en) 2006-07-01

Family

ID=33563853

Family Applications (3)

Application Number Title Priority Date Filing Date
TW093141261A TW200537868A (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer
TW093118361A TWI257793B (en) 2003-06-25 2004-06-24 Method and apparatus for data estimation in a wireless communications system
TW096122193A TW200818790A (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer

Family Applications Before (1)

Application Number Title Priority Date Filing Date
TW093141261A TW200537868A (en) 2003-06-25 2004-06-24 Reduced complexity sliding window based equalizer

Family Applications After (1)

Application Number Title Priority Date Filing Date
TW096122193A TW200818790A (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) TW200537868A (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
JP4991870B2 (en) * 2006-10-27 2012-08-01 テレフオンアクチーボラゲット エル エム エリクソン（パブル） Method and receiver for simplifying whitening calculation in 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

Family Cites Families (7)

* 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
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
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

Also Published As

Publication number Publication date
TW200537868A (en) 2005-11-16
EP1636900A4 (en) 2007-04-18
TWI257793B (en) 2006-07-01
KR20060063803A (en) 2006-06-12
JP2007525081A (en) 2007-08-30
CN101048934A (en) 2007-10-03
WO2005004338A2 (en) 2005-01-13
WO2005004338A3 (en) 2005-05-12
AR044904A1 (en) 2005-10-05
KR100937467B1 (en) 2010-01-19
TW200818790A (en) 2008-04-16
EP1636900A2 (en) 2006-03-22
KR20090079265A (en) 2009-07-21
CN101048934B (en) 2010-09-08
KR100768737B1 (en) 2007-10-22
KR100937465B1 (en) 2010-01-19
NO20060421L (en) 2006-03-23
JP4213747B2 (en) 2009-01-21
CA2530518A1 (en) 2005-01-13
MXPA05013518A (en) 2006-03-09
KR20060057634A (en) 2006-05-26

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Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees