DE3778140D1 - Adaptive digitalfilter und echokompensatoren. - Google Patents

Adaptive digitalfilter und echokompensatoren.

Info

Publication number
DE3778140D1
DE3778140D1 DE8787310605T DE3778140T DE3778140D1 DE 3778140 D1 DE3778140 D1 DE 3778140D1 DE 8787310605 T DE8787310605 T DE 8787310605T DE 3778140 T DE3778140 T DE 3778140T DE 3778140 D1 DE3778140 D1 DE 3778140D1
Authority
DE
Germany
Prior art keywords
digital filters
adaptive digital
echo compensators
compensators
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.)
Expired - Fee Related
Application number
DE8787310605T
Other languages
English (en)
Inventor
Masaki Kobayashi
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.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co 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
Priority claimed from JP54287A external-priority patent/JPS63169809A/ja
Priority claimed from JP54387A external-priority patent/JPS63169810A/ja
Priority claimed from JP54487A external-priority patent/JPS63169811A/ja
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Application granted granted Critical
Publication of DE3778140D1 publication Critical patent/DE3778140D1/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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
    • 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
    • H04B3/238—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 initial training sequence

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE8787310605T 1987-01-07 1987-12-02 Adaptive digitalfilter und echokompensatoren. Expired - Fee Related DE3778140D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP54287A JPS63169809A (ja) 1987-01-07 1987-01-07 適応形デイジタルフイルタシステム
JP54387A JPS63169810A (ja) 1987-01-07 1987-01-07 適応形デイジタルフイルタ
JP54487A JPS63169811A (ja) 1987-01-07 1987-01-07 適応形デイジタルフイルタ

Publications (1)

Publication Number Publication Date
DE3778140D1 true DE3778140D1 (de) 1992-05-14

Family

ID=27274507

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787310605T Expired - Fee Related DE3778140D1 (de) 1987-01-07 1987-12-02 Adaptive digitalfilter und echokompensatoren.

Country Status (4)

Country Link
US (1) US4852036A (de)
EP (1) EP0274850B1 (de)
CA (1) CA1318952C (de)
DE (1) DE3778140D1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4236272A1 (de) * 1992-10-27 1994-04-28 Siemens Ag Echokompensationsvorrichtung und 4/2-Drahtschnittstelle mit einer solchen Echokompensationsvorrichtung
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
JP2947093B2 (ja) * 1994-11-02 1999-09-13 日本電気株式会社 適応フィルタによるシステム同定の方法および装置
IT1273963B (it) * 1995-02-24 1997-07-11 Alcatel Italia Metodo e circuiti di equalizzazione a spaziatura frazionata
DE19925046A1 (de) * 1999-06-01 2001-05-03 Alcatel Sa Verfahren und Vorrichtung zur Unterdrückung von Rauschen und Echos

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58206223A (ja) * 1982-05-26 1983-12-01 Nf Kairo Sekkei Block:Kk デイジタルフイルタ
JPS59141814A (ja) * 1983-02-03 1984-08-14 Oki Electric Ind Co Ltd 自動等化器

Also Published As

Publication number Publication date
EP0274850A3 (en) 1988-08-03
CA1318952C (en) 1993-06-08
EP0274850A2 (de) 1988-07-20
US4852036A (en) 1989-07-25
EP0274850B1 (de) 1992-04-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee