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FR2460075B1 - Annuleur d'echo adaptatif pour transmission de donnees en duplex - Google Patents

Annuleur d'echo adaptatif pour transmission de donnees en duplex

Info

Publication number
FR2460075B1
FR2460075B1 FR7916087A FR7916087A FR2460075B1 FR 2460075 B1 FR2460075 B1 FR 2460075B1 FR 7916087 A FR7916087 A FR 7916087A FR 7916087 A FR7916087 A FR 7916087A FR 2460075 B1 FR2460075 B1 FR 2460075B1
Authority
FR
France
Prior art keywords
data transmission
echo canceller
duplex data
adaptive echo
adaptive
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
FR7916087A
Other languages
English (en)
Other versions
FR2460075A1 (fr
Inventor
Michel Levy
Jean-Philippe Haag
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.)
Nokia Inc
Original Assignee
Nokia 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 Nokia Inc filed Critical Nokia Inc
Priority to FR7916087A priority Critical patent/FR2460075B1/fr
Priority to BE1/9897A priority patent/BE883625A/fr
Priority to DE3022553A priority patent/DE3022553C2/de
Priority to GB8019594A priority patent/GB2052928B/en
Priority to LU82534A priority patent/LU82534A1/fr
Priority to CA000354374A priority patent/CA1149979A/fr
Priority to IT67973/80A priority patent/IT1128890B/it
Priority to NL8003589A priority patent/NL8003589A/nl
Priority to IE1283/80A priority patent/IE49826B1/en
Priority to US06/161,969 priority patent/US4355214A/en
Publication of FR2460075A1 publication Critical patent/FR2460075A1/fr
Application granted granted Critical
Publication of FR2460075B1 publication Critical patent/FR2460075B1/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
FR7916087A 1979-06-22 1979-06-22 Annuleur d'echo adaptatif pour transmission de donnees en duplex Expired FR2460075B1 (fr)

Priority Applications (10)

Application Number Priority Date Filing Date Title
FR7916087A FR2460075B1 (fr) 1979-06-22 1979-06-22 Annuleur d'echo adaptatif pour transmission de donnees en duplex
BE1/9897A BE883625A (fr) 1979-06-22 1980-06-04 Annuleur d'echo adaptatif pour transmission de donnees en duplex
GB8019594A GB2052928B (en) 1979-06-22 1980-06-16 Adaptive echo canceller for full-dupex transmission of data
DE3022553A DE3022553C2 (de) 1979-06-22 1980-06-16 Echoannullierer für ein synchrones Duplex-Datenübertragunssystem
LU82534A LU82534A1 (fr) 1979-06-22 1980-06-19 Annuleur d'echo adaptatif pour transmission de donnees en duplex
CA000354374A CA1149979A (fr) 1979-06-22 1980-06-19 Annuleur d'echo adaptatif pour transmission de donnees en duplex
IT67973/80A IT1128890B (it) 1979-06-22 1980-06-20 Annullatore di eco adattativo per sistemi di trasmissione di dati in duplex
NL8003589A NL8003589A (nl) 1979-06-22 1980-06-20 Adaptieve echovereffenaar voor duplexgegevenstrans- missie.
IE1283/80A IE49826B1 (en) 1979-06-22 1980-06-20 Terminal for full-duplex transmission of data and including an adaptive echo canceller
US06/161,969 US4355214A (en) 1979-06-22 1980-06-23 Adaptive echo canceller for full-duplex transmission of data

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7916087A FR2460075B1 (fr) 1979-06-22 1979-06-22 Annuleur d'echo adaptatif pour transmission de donnees en duplex

Publications (2)

Publication Number Publication Date
FR2460075A1 FR2460075A1 (fr) 1981-01-16
FR2460075B1 true FR2460075B1 (fr) 1988-12-09

Family

ID=9226984

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7916087A Expired FR2460075B1 (fr) 1979-06-22 1979-06-22 Annuleur d'echo adaptatif pour transmission de donnees en duplex

Country Status (10)

Country Link
US (1) US4355214A (fr)
BE (1) BE883625A (fr)
CA (1) CA1149979A (fr)
DE (1) DE3022553C2 (fr)
FR (1) FR2460075B1 (fr)
GB (1) GB2052928B (fr)
IE (1) IE49826B1 (fr)
IT (1) IT1128890B (fr)
LU (1) LU82534A1 (fr)
NL (1) NL8003589A (fr)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2487144B1 (fr) * 1980-07-21 1986-10-24 Trt Telecom Radio Electr Dispositif d'annulation d'un signal d'echo composite
NL8100650A (nl) * 1981-02-11 1982-09-01 Philips Nv Inrichting voor het corrigeren van pulsvervorming bij homochrone datatransmissie.
US4464545A (en) * 1981-07-13 1984-08-07 Bell Telephone Laboratories, Incorporated Echo canceller
IT1145142B (it) * 1981-11-24 1986-11-05 Cselt Entro Studi E Loboratori Metodo e dispositivo per la cancellazione dell eco in banda passante per segnali dati a modulazione di fase
FR2517905B1 (fr) * 1981-12-09 1985-11-29 Telecommunications Sa Dispositif d'initialisation pour annuleur d'echo et son application aux echos lointains
FR2528643A1 (fr) * 1982-06-14 1983-12-16 Trt Telecom Radio Electr Procede destine a reduire le temps de convergence d'un annuleur d'echo et dispositif utilise pour mettre en oeuvre ce procede
NL8202438A (nl) * 1982-06-16 1984-01-16 Philips Nv Eindinrichting voor een duplex transmissiestelsel.
FR2540314A1 (fr) * 1983-01-31 1984-08-03 Trt Telecom Radio Electr Procede d'initialisation des coefficients de filtres dans un dispositif d'annulation d'echos proche et lointain et dispositif de mise en oeuvre de ce procede
US4562312A (en) * 1983-02-17 1985-12-31 At&T Bell Laboratories Subsampling delay estimator for an echo canceler
FR2541837A1 (fr) * 1983-02-25 1984-08-31 Trt Telecom Radio Electr Procede de reduction du temps de convergence d'un annuleur d'echo et dispositif pour mettre en oeuvre ce procede
FR2546693B1 (fr) * 1983-05-26 1985-08-30 Centre Nat Rech Scient Annuleur d'echo a filtre numerique adaptatif pour systeme de transmission
FR2553521B1 (fr) * 1983-10-18 1986-04-11 Cgr Ultrasonic Sonde d'echographie, procede de fabrication de cette sonde et appareil d'echographie incorporant une telle sonde
GB8404563D0 (en) * 1984-02-21 1984-03-28 Plessey Co Plc Adaptive cancellation bridge circuit
ATE64256T1 (de) * 1984-03-30 1991-06-15 Siemens Ag Schaltungsanordnung zum pruefen der funktionsfaehigkeit einer datenuebertragunseinrichtung.
FR2569322B1 (fr) * 1984-08-17 1986-12-05 Trt Telecom Radio Electr Annuleur d'echo utilisant la modulation delta
US4682358A (en) * 1984-12-04 1987-07-21 American Telephone And Telegraph Company Echo canceller
EP0239293A3 (fr) * 1986-03-24 1988-12-14 Gpt Limited Systèmes de transmission de données
US4989221A (en) * 1987-03-30 1991-01-29 Codex Corporation Sample rate converter
US4969144A (en) * 1989-01-03 1990-11-06 Universal Data Systems, Inc. Adaptive passband echo canceller
US5696734A (en) * 1996-04-30 1997-12-09 Atlantic Richfield Company Method and system for eliminating ghost reflections from ocean bottom cable seismic survey signals
EP0972357A2 (fr) 1998-01-30 2000-01-19 Koninklijke Philips Electronics N.V. Procede de suppression d'echos dans un systeme de communications, dispositif de communication et station de base radio pour dispositif telephonique sans fil
US6862324B1 (en) 2000-10-23 2005-03-01 The Aerospace Corporation Data aided symbol timing system for precoded continuous phase modulated signals
US8077763B2 (en) * 2003-10-21 2011-12-13 Symbol Technologies, Inc. Full-duplex radio frequency echo cancellation
DE102004025576B4 (de) * 2004-05-25 2006-03-30 Infineon Technologies Ag Sende-und Empfangsanordnung mit einer Regelung zur Störsignalunterdrückung
US9240878B2 (en) * 2014-01-27 2016-01-19 Lattice Semiconductor Corporation Apparatus, method and system for asymmetric, full-duplex communication

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087654A (en) * 1975-11-28 1978-05-02 Bell Telephone Laboratories, Incorporated Echo canceller for two-wire full duplex data transmission
NL170688C (nl) * 1976-06-28 1982-12-01 Philips Nv Inrichting voor simultane tweerichtingsdatatransmissie over tweedraadsverbindingen.
SE416367B (sv) * 1976-09-07 1980-12-15 Western Electric Co Ekoelimineringsanordning
NL7800408A (nl) * 1977-01-17 1978-07-19 Trt Telecom Radio Electr Digitale echocompensator voor een modem voor datatransmissie met behulp van modulatie van een draaggolf.
DE2921780C3 (de) * 1979-05-29 1982-02-11 Siemens AG, 1000 Berlin und 8000 München Verfahren und Schaltungsanordnung zur Übertragung von Daten über eine Zweidrahtleitung

Also Published As

Publication number Publication date
GB2052928B (en) 1983-10-12
US4355214A (en) 1982-10-19
IE49826B1 (en) 1985-12-25
IT8067973A0 (it) 1980-06-20
DE3022553C2 (de) 1982-09-02
CA1149979A (fr) 1983-07-12
IT1128890B (it) 1986-06-04
GB2052928A (en) 1981-01-28
IE801283L (en) 1980-12-22
DE3022553A1 (de) 1981-01-08
BE883625A (fr) 1980-12-04
NL8003589A (nl) 1980-12-24
FR2460075A1 (fr) 1981-01-16
LU82534A1 (fr) 1981-02-03

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