FR2407613A1 - Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed - Google Patents

Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed

Info

Publication number
FR2407613A1
FR2407613A1 FR7732111A FR7732111A FR2407613A1 FR 2407613 A1 FR2407613 A1 FR 2407613A1 FR 7732111 A FR7732111 A FR 7732111A FR 7732111 A FR7732111 A FR 7732111A FR 2407613 A1 FR2407613 A1 FR 2407613A1
Authority
FR
France
Prior art keywords
coefficients
adaptation
digital filter
stages
adaptive 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
FR7732111A
Other languages
French (fr)
Other versions
FR2407613B1 (en
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7732111A priority Critical patent/FR2407613A1/en
Publication of FR2407613A1 publication Critical patent/FR2407613A1/en
Application granted granted Critical
Publication of FR2407613B1 publication Critical patent/FR2407613B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks

Abstract

The adaptive digital filter is designed to compensate the transfer of a line of transmission comprising M coefficients. To increase the speed of convergence, and reduce the length of the acquisition phase, during which test sequences are transmitted on the line, the adaptation is broken down into successive stages. Each stage is associated with a part composed of M' filter coefficients. During each stage the adaptation of M' coefficients w.r.t. the error determined is effected by using only the M' coefficients. Increases are made in the value of M' until in the last stage M'=M.
FR7732111A 1977-10-25 1977-10-25 Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed Granted FR2407613A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7732111A FR2407613A1 (en) 1977-10-25 1977-10-25 Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7732111A FR2407613A1 (en) 1977-10-25 1977-10-25 Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed

Publications (2)

Publication Number Publication Date
FR2407613A1 true FR2407613A1 (en) 1979-05-25
FR2407613B1 FR2407613B1 (en) 1982-10-15

Family

ID=9196924

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7732111A Granted FR2407613A1 (en) 1977-10-25 1977-10-25 Adaptive digital filter for data transmission - has adaptation divided into stages using increasing number of coefficients to increase speed

Country Status (1)

Country Link
FR (1) FR2407613A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027314A1 (en) * 1979-09-14 1981-04-22 Western Electric Company, Incorporated Data receiver including means for forming line samples and method of operating such a data receiver
US5027410A (en) * 1988-11-10 1991-06-25 Wisconsin Alumni Research Foundation Adaptive, programmable signal processing and filtering for hearing aids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027314A1 (en) * 1979-09-14 1981-04-22 Western Electric Company, Incorporated Data receiver including means for forming line samples and method of operating such a data receiver
US5027410A (en) * 1988-11-10 1991-06-25 Wisconsin Alumni Research Foundation Adaptive, programmable signal processing and filtering for hearing aids

Also Published As

Publication number Publication date
FR2407613B1 (en) 1982-10-15

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse