CN1247664A - 通信系统中回音抵消器的自适应装置和方法 - Google Patents

通信系统中回音抵消器的自适应装置和方法 Download PDF

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Publication number
CN1247664A
CN1247664A CN 98802498 CN98802498A CN1247664A CN 1247664 A CN1247664 A CN 1247664A CN 98802498 CN98802498 CN 98802498 CN 98802498 A CN98802498 A CN 98802498A CN 1247664 A CN1247664 A CN 1247664A
Authority
CN
China
Prior art keywords
echo
neutralizer
far
broadening
end echo
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.)
Pending
Application number
CN 98802498
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English (en)
Chinese (zh)
Inventor
潭力军
刘汉玉
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
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 filed Critical Motorola Inc
Publication of CN1247664A publication Critical patent/CN1247664A/zh
Pending legal-status Critical Current

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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)
CN 98802498 1997-12-12 1998-11-13 通信系统中回音抵消器的自适应装置和方法 Pending CN1247664A (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US98969297A 1997-12-12 1997-12-12
US08/989,692 1997-12-12

Publications (1)

Publication Number Publication Date
CN1247664A true CN1247664A (zh) 2000-03-15

Family

ID=25535373

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 98802498 Pending CN1247664A (zh) 1997-12-12 1998-11-13 通信系统中回音抵消器的自适应装置和方法

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
EP1599948B1 (fr) * 2002-07-02 2006-05-31 Siemens Aktiengesellschaft Désactivation, dépendante de la durée de propagation, de la compensation d'écho dans un réseau à commutation par paquets
DE112004001455B4 (de) 2003-08-07 2020-04-23 Intersil Americas LLC Verfahren und System zum Löschen von Übersprechen
DE602005020662D1 (de) 2004-10-13 2010-05-27 Koninkl Philips Electronics Nv Echolöschung
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
EP0403716B1 (fr) * 1989-06-22 1995-09-13 International Business Machines Corporation Dispositif d'annulation d'écho à ajustement des coefficients de l'annuleur d'écho pendant la transmission en duplex intégral
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
AU1411299A (en) 1999-07-05
CA2279360A1 (fr) 1999-06-24
EP0960521A1 (fr) 1999-12-01
WO1999031866A1 (fr) 1999-06-24
BR9807321A (pt) 2000-04-18
ID27681A (id) 2001-04-19
EP0960521A4 (fr) 2004-08-04
CA2279360C (fr) 2002-10-22

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