ES2035186T3 - Compensador de ecos. - Google Patents

Compensador de ecos.

Info

Publication number
ES2035186T3
ES2035186T3 ES198888112050T ES88112050T ES2035186T3 ES 2035186 T3 ES2035186 T3 ES 2035186T3 ES 198888112050 T ES198888112050 T ES 198888112050T ES 88112050 T ES88112050 T ES 88112050T ES 2035186 T3 ES2035186 T3 ES 2035186T3
Authority
ES
Spain
Prior art keywords
echo
step width
signal
echo canceller
measuring device
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 - Lifetime
Application number
ES198888112050T
Other languages
English (en)
Inventor
Dirsko Von Pfeil
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Application granted granted Critical
Publication of ES2035186T3 publication Critical patent/ES2035186T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B3/234—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 double talk detection
    • 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)
  • Primary Cells (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Radio Relay Systems (AREA)

Abstract

EL ANCHO DE PASO CON LO CUAL SE AJUSTA UN FILTRO TRANSVERSAL (21) EN EL ECOCOMPENSADOR (10) ES DEPENDIENTE TAMBIEN DEL TAMAÑO DE LA SEÑAL DE ERRORES (F) EN LA SALIDA DEL TRANSCURSO DEL TRANSMISOR (13). ESTO PRODUCE, QUE EL ECOCOMPENSADOR (10) EN SEÑAL DE ERROR (F) GRANDE COMPENSE CON EL ANCHO PASO GRANDE RAPIDAMENTE DEL ECO QUE MAS ESTORBA Y A CONTINUACION EN SEÑAL DE ERROR PEQUEÑO (F) SE ESTINGA CON PASO PEQUEÑO AL RESTO DEL ECO BIEN. EN COMUNICACION SIMULTANEA NO RECONOCIBLE SE PREINTERCAMBIA UNA SEÑAL DE ERROR GRANDE. SE PRETENDE LA EVITACION DE ESTE EFECTO. LA INSTALACION DE MEDICION DE ECO (26) COMPRENDE UNA COMUNICACION SIMULTANEA RELATIVAMENTE SEGURO Y CEDE UNA SEÑAL DE AJUSTE DE PASO (S) SOBRE EL FILTRO TRANSVERSAL (21). UN ACUMULADOR DE ADAPTACION DE MARCOS (28) COMPRENDE UNA HENDIDURA DE FASE O UN RESBALAMIENTO Y POSPONE LA INSTALACION DE MEDICION DEL ECO (26) CON UNA SEÑAL DE POSPONER (R). EL ECOCOMPENSADOR SE APLICA EN CARGAS DE CABEZALES INTERNACIONALES.
ES198888112050T 1987-07-29 1988-07-26 Compensador de ecos. Expired - Lifetime ES2035186T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3725190 1987-07-29

Publications (1)

Publication Number Publication Date
ES2035186T3 true ES2035186T3 (es) 1993-04-16

Family

ID=6332662

Family Applications (1)

Application Number Title Priority Date Filing Date
ES198888112050T Expired - Lifetime ES2035186T3 (es) 1987-07-29 1988-07-26 Compensador de ecos.

Country Status (8)

Country Link
EP (1) EP0303101B1 (es)
JP (1) JPH0695653B2 (es)
AT (1) ATE81239T1 (es)
AU (1) AU586959B2 (es)
DE (1) DE3875028D1 (es)
ES (1) ES2035186T3 (es)
GR (1) GR3006697T3 (es)
NO (1) NO175400C (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300427B1 (en) * 1987-07-20 1992-09-30 Nec Corporation Echo canceller
DE19816358C2 (de) * 1998-04-03 2000-04-27 Deutsche Telekom Ag Verfahren zur Steuerung der Schrittweite eines Echokompensators mit adaptivem Filter
EP1301018A1 (en) * 2001-10-02 2003-04-09 Alcatel Apparatus and method for modifying a digital signal in the coded domain

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327467A1 (de) * 1983-07-29 1985-02-14 Siemens AG, 1000 Berlin und 8000 München Verfahren und schaltungsanordnung zur kompensation von echosignalen
JPS6053336A (ja) * 1983-09-02 1985-03-27 Nec Corp 反響消去装置
FR2564667B1 (fr) * 1984-05-15 1986-09-19 Trt Telecom Radio Electr Dispositif de commande d'un annuleur d'echo et d'un ecreteur de centre
DE3768975D1 (de) * 1986-01-30 1991-05-08 Siemens Ag Echokompensator.

Also Published As

Publication number Publication date
ATE81239T1 (de) 1992-10-15
JPH0695653B2 (ja) 1994-11-24
JPS6444636A (en) 1989-02-17
AU2011088A (en) 1989-02-16
NO883355L (no) 1989-01-30
AU586959B2 (en) 1989-07-27
NO175400C (no) 1994-10-05
NO175400B (no) 1994-06-27
DE3875028D1 (de) 1992-11-05
NO883355D0 (no) 1988-07-28
GR3006697T3 (es) 1993-06-30
EP0303101B1 (de) 1992-09-30
EP0303101A1 (de) 1989-02-15

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