ES8708102A1 - Aparato para ajustar un filtro de igualacion digital en un circuito hibrido de un sistema de telecomunicacion valida para transmitir informacion digital en duplex. - Google Patents

Aparato para ajustar un filtro de igualacion digital en un circuito hibrido de un sistema de telecomunicacion valida para transmitir informacion digital en duplex.

Info

Publication number
ES8708102A1
ES8708102A1 ES554203A ES554203A ES8708102A1 ES 8708102 A1 ES8708102 A1 ES 8708102A1 ES 554203 A ES554203 A ES 554203A ES 554203 A ES554203 A ES 554203A ES 8708102 A1 ES8708102 A1 ES 8708102A1
Authority
ES
Spain
Prior art keywords
signal
epsilon
elimination
adaptive
balance
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
ES554203A
Other languages
English (en)
Other versions
ES554203A0 (es
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Publication of ES554203A0 publication Critical patent/ES554203A0/es
Publication of ES8708102A1 publication Critical patent/ES8708102A1/es
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
    • 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
    • H04B3/235—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 combined with adaptive equaliser

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)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
  • Filters And Equalizers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Bidirectional Digital Transmission (AREA)

Abstract

APARATO PARA AJUSTAR UN FILTRO DE IGUALACION DIGITAL EN UN CIRCUITO HIBRIDO DE UN SISTEMA DE TELECOMUNICACION. COMPRENDE DOS SEÑALES DE COMPENSACION EZ(T) DE LOS PARAMETROS ALMACENADOS DE UN FILTRO DE COMPENSACION DIGITAL (B) E IZ(T) DE LOS PARAMETROS CORRESPONDIENTES DEL FILTRO IGUALADOR (U), QUE SON RESTADAS DE UNA SEÑAL RECIBIDA A(T) B EZ(T) B IZ(T) A FIN DE FORMAR UNA SEÑAL DIFERENCIA R(T) QUE ESTA COMPENSADA DEL RUIDO CAUSADO POR ECOS E INTERFERENCIAS ENTRE SIMBOLOS. TIENE UTILIDAD PARA TRANSMITIR INFORMACION DIGITAL EN DUPLEX.
ES554203A 1985-04-22 1986-04-21 Aparato para ajustar un filtro de igualacion digital en un circuito hibrido de un sistema de telecomunicacion valida para transmitir informacion digital en duplex. Expired ES8708102A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8501956A SE447777B (sv) 1985-04-22 1985-04-22 Forfarande for instellning av ett digitalt utjemnarfilter vid samtidig adaptiv ekoeliminering och adaptiv eliminering av storningar som uppstar genom intersymbolinterferens, samt anordning for genomforande av forfarande

Publications (2)

Publication Number Publication Date
ES554203A0 ES554203A0 (es) 1987-09-01
ES8708102A1 true ES8708102A1 (es) 1987-09-01

Family

ID=20359935

Family Applications (1)

Application Number Title Priority Date Filing Date
ES554203A Expired ES8708102A1 (es) 1985-04-22 1986-04-21 Aparato para ajustar un filtro de igualacion digital en un circuito hibrido de un sistema de telecomunicacion valida para transmitir informacion digital en duplex.

Country Status (18)

Country Link
US (1) US4727543A (es)
EP (1) EP0219537B1 (es)
JP (1) JPH0671221B2 (es)
KR (1) KR880700554A (es)
AT (1) ATE54520T1 (es)
AU (1) AU5812486A (es)
BR (1) BR8606638A (es)
CA (1) CA1257352A (es)
DE (1) DE3672557D1 (es)
ES (1) ES8708102A1 (es)
FI (1) FI864967A (es)
GR (1) GR860954B (es)
MA (1) MA20667A1 (es)
NZ (1) NZ215670A (es)
PT (1) PT82433B (es)
SE (1) SE447777B (es)
WO (1) WO1986006567A1 (es)
YU (1) YU65186A (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GR861513B (en) * 1985-06-13 1986-10-13 Siemens Ag Double cable amplifier fourfold amplifire of a double cable and fourfold circuit with amplifier
CA1272529A (en) * 1987-12-31 1990-08-07 Northern Telecom Limited Apparatus and method for noise reduction in a digital line receiver
US4982428A (en) * 1988-12-29 1991-01-01 At&T Bell Laboratories Arrangement for canceling interference in transmission systems
US5111481A (en) * 1989-11-17 1992-05-05 Nynex Corporation Dual mode LMS channel equalizer
US5267266A (en) * 1992-05-11 1993-11-30 Bell Communications Research, Inc. Fast converging adaptive equalizer using pilot adaptive filters
US5544047A (en) * 1993-12-29 1996-08-06 International Business Machines Corporation Reflective wave compensation on high speed processor cards
US5757654A (en) * 1993-12-29 1998-05-26 International Business Machines Corp. Reflective wave compensation on high speed processor cards

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2111354B (en) * 1981-11-19 1985-06-19 Standard Telephones Cables Ltd Echo canceller
FR2534426A1 (fr) * 1982-10-11 1984-04-13 Trt Telecom Radio Electr Egaliseur auto-adaptatif pour signal de donnees en bande de base
FR2534427A1 (fr) * 1982-10-11 1984-04-13 Trt Telecom Radio Electr Annuleur d'echo pour signal de donnees en bande de base
FR2534754A1 (fr) * 1982-10-15 1984-04-20 Trt Telecom Radio Electr Recepteur pour modem de transmission de donnees, comportant un annuleur d'echo et un egaliseur
US4621172A (en) * 1982-12-22 1986-11-04 Nec Corporation Fast convergence method and system for echo canceller
GB2144950A (en) * 1983-08-10 1985-03-13 Philips Electronic Associated Data transmission system
LU85402A1 (de) * 1983-12-01 1984-09-11 Siemens Ag Verfahren und schaltungsanordnung zur kompensation von uebersprech-u./o.echosignalen
US4677668A (en) * 1984-05-01 1987-06-30 North Carolina State University Echo canceller using parametric methods
US4650930A (en) * 1985-02-13 1987-03-17 Northern Telecom Limited Adaptive equalizer

Also Published As

Publication number Publication date
NZ215670A (en) 1988-10-28
YU65186A (en) 1991-02-28
EP0219537A1 (en) 1987-04-29
PT82433B (pt) 1992-07-31
EP0219537B1 (en) 1990-07-11
GR860954B (en) 1986-04-14
SE8501956D0 (sv) 1985-04-22
SE447777B (sv) 1986-12-08
ES554203A0 (es) 1987-09-01
FI864967A0 (fi) 1986-12-05
JPH0671221B2 (ja) 1994-09-07
WO1986006567A1 (en) 1986-11-06
MA20667A1 (fr) 1986-12-31
CA1257352A (en) 1989-07-11
KR880700554A (ko) 1988-03-15
ATE54520T1 (de) 1990-07-15
US4727543A (en) 1988-02-23
DE3672557D1 (de) 1990-08-16
SE8501956L (sv) 1986-10-23
FI864967A (fi) 1986-12-05
PT82433A (en) 1986-05-01
BR8606638A (pt) 1987-08-04
AU5812486A (en) 1986-11-18
JPS62502581A (ja) 1987-10-01

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