WO2007001786A3 - A reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares - Google Patents

A reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares Download PDF

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Publication number
WO2007001786A3
WO2007001786A3 PCT/US2006/022286 US2006022286W WO2007001786A3 WO 2007001786 A3 WO2007001786 A3 WO 2007001786A3 US 2006022286 W US2006022286 W US 2006022286W WO 2007001786 A3 WO2007001786 A3 WO 2007001786A3
Authority
WO
WIPO (PCT)
Prior art keywords
adaptive filter
backward
error prediction
lattice structure
forward error
Prior art date
Application number
PCT/US2006/022286
Other languages
French (fr)
Other versions
WO2007001786A2 (en
Inventor
David L Barron
Kyle K Iwai
James B Piket
Original Assignee
Motorola Inc
David L Barron
Kyle K Iwai
James B Piket
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 US11/399,907 external-priority patent/US7734466B2/en
Application filed by Motorola Inc, David L Barron, Kyle K Iwai, James B Piket filed Critical Motorola Inc
Priority to CN2006800218486A priority Critical patent/CN101496001B/en
Publication of WO2007001786A2 publication Critical patent/WO2007001786A2/en
Publication of WO2007001786A3 publication Critical patent/WO2007001786A3/en

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0014—Lattice filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0043—Adaptive algorithms
    • H03H2021/0049—Recursive least squares algorithm

Abstract

A method for reducing a computational complexity of an m-stage adaptive filter is provided by updating recursively forward and backward error prediction square terms for a first portion of a length of the adaptive filter, and keeping the updated forward and backward error prediction square terms constant for a second portion of the length of the adaptive filter.
PCT/US2006/022286 2005-06-20 2006-06-08 A reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares WO2007001786A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2006800218486A CN101496001B (en) 2005-06-20 2006-06-08 A reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US69223605P 2005-06-20 2005-06-20
US60/692,236 2005-06-20
US11/399,907 US7734466B2 (en) 2005-06-20 2006-04-07 Reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares
US11/399,907 2006-04-07

Publications (2)

Publication Number Publication Date
WO2007001786A2 WO2007001786A2 (en) 2007-01-04
WO2007001786A3 true WO2007001786A3 (en) 2009-04-16

Family

ID=37595657

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/022286 WO2007001786A2 (en) 2005-06-20 2006-06-08 A reduced complexity recursive least square lattice structure adaptive filter by means of limited recursion of the backward and forward error prediction squares

Country Status (2)

Country Link
CN (1) CN101496001B (en)
WO (1) WO2007001786A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20130308771A1 (en) * 2011-02-03 2013-11-21 Dsp Group Ltd Method and apparatus for hierarchical adaptive filter
CN105785124A (en) * 2016-03-07 2016-07-20 国网技术学院 Method for measuring harmonics and interharmonics of electric power system through spectrum estimation and cross correlation
CN110224955B (en) * 2019-06-19 2020-07-03 北京邮电大学 Digital equalizer structure and implementation method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030035468A1 (en) * 2001-05-17 2003-02-20 Corbaton Ivan Jesus Fernandez System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system
US20040071207A1 (en) * 2000-11-08 2004-04-15 Skidmore Ian David Adaptive filter
US20040210146A1 (en) * 1991-03-07 2004-10-21 Diab Mohamed K. Signal processing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040210146A1 (en) * 1991-03-07 2004-10-21 Diab Mohamed K. Signal processing apparatus
US20040071207A1 (en) * 2000-11-08 2004-04-15 Skidmore Ian David Adaptive filter
US20030035468A1 (en) * 2001-05-17 2003-02-20 Corbaton Ivan Jesus Fernandez System and method for adjusting combiner weights using an adaptive algorithm in wireless communications system

Also Published As

Publication number Publication date
WO2007001786A2 (en) 2007-01-04
CN101496001B (en) 2011-08-03
CN101496001A (en) 2009-07-29

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