CA2279360A1 - Appareil et procede pour l'adaptation d'un annuleur d'echos dans un systeme de communication - Google Patents

Appareil et procede pour l'adaptation d'un annuleur d'echos dans un systeme de communication Download PDF

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Publication number
CA2279360A1
CA2279360A1 CA002279360A CA2279360A CA2279360A1 CA 2279360 A1 CA2279360 A1 CA 2279360A1 CA 002279360 A CA002279360 A CA 002279360A CA 2279360 A CA2279360 A CA 2279360A CA 2279360 A1 CA2279360 A1 CA 2279360A1
Authority
CA
Canada
Prior art keywords
echo canceller
adapting
communication system
far
digital
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA002279360A
Other languages
English (en)
Other versions
CA2279360C (fr
Inventor
Hanyu Liu
Lijun Tan
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola, Inc.
Hanyu Liu
Lijun Tan
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 Motorola, Inc., Hanyu Liu, Lijun Tan filed Critical Motorola, Inc.
Publication of CA2279360A1 publication Critical patent/CA2279360A1/fr
Application granted granted Critical
Publication of CA2279360C publication Critical patent/CA2279360C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • H04B3/237—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers using two adaptive filters, e.g. for near end and for end echo cancelling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephonic Communication Services (AREA)
CA002279360A 1997-12-12 1998-11-13 Appareil et procede pour l'adaptation d'un annuleur d'echos dans un systeme de communication Expired - Fee Related CA2279360C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US98969297A 1997-12-12 1997-12-12
US08/989,692 1997-12-12
PCT/US1998/024365 WO1999031866A1 (fr) 1997-12-12 1998-11-13 Appareil et procede pour l'adaptation d'un annuleur d'echos dans un systeme de communication

Publications (2)

Publication Number Publication Date
CA2279360A1 true CA2279360A1 (fr) 1999-06-24
CA2279360C CA2279360C (fr) 2002-10-22

Family

ID=25535373

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002279360A Expired - Fee Related CA2279360C (fr) 1997-12-12 1998-11-13 Appareil et procede pour l'adaptation d'un annuleur d'echos dans un systeme de communication

Country Status (7)

Country Link
EP (1) EP0960521A4 (fr)
CN (1) CN1247664A (fr)
AU (1) AU1411299A (fr)
BR (1) BR9807321A (fr)
CA (1) CA2279360C (fr)
ID (1) ID27681A (fr)
WO (1) WO1999031866A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6480532B1 (en) * 1999-07-13 2002-11-12 Stmicroelectronics, Inc. Echo cancellation for an ADSL modem
EP1117191A1 (fr) * 2000-01-13 2001-07-18 Telefonaktiebolaget Lm Ericsson Méthode d'annulation d'écho
EP1286509A3 (fr) * 2001-08-21 2004-02-04 Siemens Aktiengesellschaft Procedé et dispositif pour compenser l' echo dans un résau de télécommunication
SE525053C2 (sv) * 2002-04-26 2004-11-16 Global Ip Sound Europ Ab Ekosläckning
US20050223113A1 (en) * 2002-07-02 2005-10-06 Klaus Hoffmann Runtime-dependent switching off of the echo compensation in packet networks
WO2005018134A2 (fr) 2003-08-07 2005-02-24 Quellan, Inc. Procede et systeme pour supprimer la diaphonie
CN101040512B (zh) 2004-10-13 2010-05-26 皇家飞利浦电子股份有限公司 回波抵消设备与方法
US10177810B2 (en) * 2016-09-02 2019-01-08 Marvell World Trade Ltd. Systems and methods for echo or interference cancellation power-saving management in a communication system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4742510A (en) * 1986-04-04 1988-05-03 Massachusetts Institute Of Technology Near and far echo canceller for data communications
JPH0650829B2 (ja) * 1986-09-16 1994-06-29 日本電気株式会社 エコ−キヤンセラ方式モデム
US4970715A (en) * 1987-03-27 1990-11-13 Universal Data Systems, Inc. Modem with improved remote echo location and cancellation
US4995030A (en) * 1988-02-01 1991-02-19 Memotec Datacom, Inc. Far end echo cancellation method and apparatus
DE68924261T2 (de) * 1989-06-22 1996-03-21 Ibm Echokompensationseinrichtung mit Anpassung der Echokompensationskoeffizienten während der Vollduplexübertragung.
US5280473A (en) * 1990-02-08 1994-01-18 Universal Data Systems, Inc. Modem with echo cancellation
EP0543568A2 (fr) * 1991-11-22 1993-05-26 AT&T Corp. Filtrage à haute résolution utilisant des processeurs à basse résolution
US5353348A (en) * 1993-05-14 1994-10-04 Jrc International, Inc. Double echo cancelling system

Also Published As

Publication number Publication date
WO1999031866A1 (fr) 1999-06-24
ID27681A (id) 2001-04-19
EP0960521A4 (fr) 2004-08-04
AU1411299A (en) 1999-07-05
CN1247664A (zh) 2000-03-15
CA2279360C (fr) 2002-10-22
EP0960521A1 (fr) 1999-12-01
BR9807321A (pt) 2000-04-18

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed