CA1250035A - Eliminateur d'echos a memoire fractionnee - Google Patents

Eliminateur d'echos a memoire fractionnee

Info

Publication number
CA1250035A
CA1250035A CA000508316A CA508316A CA1250035A CA 1250035 A CA1250035 A CA 1250035A CA 000508316 A CA000508316 A CA 000508316A CA 508316 A CA508316 A CA 508316A CA 1250035 A CA1250035 A CA 1250035A
Authority
CA
Canada
Prior art keywords
echo
signal
echo canceller
memory
address
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.)
Expired
Application number
CA000508316A
Other languages
English (en)
Inventor
Mahshad Koohgoli
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.)
Nortel Networks Ltd
Original Assignee
Northern Telecom Ltd
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 Northern Telecom Ltd filed Critical Northern Telecom Ltd
Priority to CA000508316A priority Critical patent/CA1250035A/fr
Application granted granted Critical
Publication of CA1250035A publication Critical patent/CA1250035A/fr
Expired 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
    • H04B3/231—Echo cancellers using readout of a memory to provide the echo replica

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
CA000508316A 1986-05-02 1986-05-02 Eliminateur d'echos a memoire fractionnee Expired CA1250035A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000508316A CA1250035A (fr) 1986-05-02 1986-05-02 Eliminateur d'echos a memoire fractionnee

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA000508316A CA1250035A (fr) 1986-05-02 1986-05-02 Eliminateur d'echos a memoire fractionnee

Publications (1)

Publication Number Publication Date
CA1250035A true CA1250035A (fr) 1989-02-14

Family

ID=4133046

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000508316A Expired CA1250035A (fr) 1986-05-02 1986-05-02 Eliminateur d'echos a memoire fractionnee

Country Status (1)

Country Link
CA (1) CA1250035A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029167A (en) * 1989-09-13 1991-07-02 Northern Telecom Limited Coefficient storage reduction in adaptive filters in echo cancellers or decision feedback equalizers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5029167A (en) * 1989-09-13 1991-07-02 Northern Telecom Limited Coefficient storage reduction in adaptive filters in echo cancellers or decision feedback equalizers

Similar Documents

Publication Publication Date Title
US4605826A (en) Echo canceler with cascaded filter structure
US5761247A (en) Rob bit compensation system and method associated with a receiver or codec
JPH05207075A (ja) ディジタル通信システム
US6563870B1 (en) Nonlinear echo compensator
US4488292A (en) PCM-TDM Switching system using time slot multiples
US4334128A (en) Echo canceler for homochronous data transmission systems
US4769808A (en) Method of cancelling echoes in full-duplex data transmission system
JPH046289B2 (fr)
EP0057953B1 (fr) Arrangement pour corriger la distorsion d'impulsions lors de la transmission de données homochrone
JPH0457136B2 (fr)
US4484322A (en) Circuit arrangement for suppressing outgoing-signal noises in system for bidirectional transmission of digitized signals over two-wire line
CN1014291B (zh) 电信传输系统中的回声抵消器
CA1250035A (fr) Eliminateur d'echos a memoire fractionnee
EP0243032A1 (fr) Annuleur déchos pour signaux codés
CA1250036A (fr) Eliminateur d'echos a surechantillonnage
EP0243033A1 (fr) Annuleur d'échos par suréchantillonnage
JP3013613B2 (ja) データ送受信装置
JP2518394B2 (ja) エコ―キャンセラ方式全二重送受信回路
US5473600A (en) Efficient data storage arrangement for far-end echo canceller
JPS59211338A (ja) エコ−キヤンセラ−装置
SU1389006A2 (ru) Устройство дл передачи дискретных сообщений
JPH0697776B2 (ja) 電話システムのトーン信号発生装置
JPS62256535A (ja) エコ−キヤンセラ
SU1529459A1 (ru) Устройство дл передачи и приема дискретной информации
RU1818694C (ru) Эхокомпенсатор

Legal Events

Date Code Title Description
MKEX Expiry