BR8606638A - Processo e aparelho para ajustar um filtro equalizador em simultanea eliminacao de ecos auto-adaptavel e eliminacao de ruido auto-adaptavel ocasionado por interferencia inter-simbolos - Google Patents

Processo e aparelho para ajustar um filtro equalizador em simultanea eliminacao de ecos auto-adaptavel e eliminacao de ruido auto-adaptavel ocasionado por interferencia inter-simbolos

Info

Publication number
BR8606638A
BR8606638A BR8606638A BR8606638A BR8606638A BR 8606638 A BR8606638 A BR 8606638A BR 8606638 A BR8606638 A BR 8606638A BR 8606638 A BR8606638 A BR 8606638A BR 8606638 A BR8606638 A BR 8606638A
Authority
BR
Brazil
Prior art keywords
signal
kappa
epsilon
adaptable
pct
Prior art date
Application number
BR8606638A
Other languages
English (en)
Inventor
Anders Gustav Bauer
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR8606638A publication Critical patent/BR8606638A/pt

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)
  • Bidirectional Digital Transmission (AREA)
  • Filters And Equalizers (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
BR8606638A 1985-04-22 1986-04-08 Processo e aparelho para ajustar um filtro equalizador em simultanea eliminacao de ecos auto-adaptavel e eliminacao de ruido auto-adaptavel ocasionado por interferencia inter-simbolos BR8606638A (pt)

Applications Claiming Priority (2)

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
PCT/SE1986/000162 WO1986006567A1 (en) 1985-04-22 1986-04-08 Method and apparatus for adjusting a digital equalizing filter in simultaneous adaptive echo elimination and adaptive elimination of noise caused by intersymbol interference

Publications (1)

Publication Number Publication Date
BR8606638A true BR8606638A (pt) 1987-08-04

Family

ID=20359935

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8606638A BR8606638A (pt) 1985-04-22 1986-04-08 Processo e aparelho para ajustar um filtro equalizador em simultanea eliminacao de ecos auto-adaptavel e eliminacao de ruido auto-adaptavel ocasionado por interferencia inter-simbolos

Country Status (18)

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

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
US4727543A (en) 1988-02-23
NZ215670A (en) 1988-10-28
FI864967A0 (fi) 1986-12-05
JPS62502581A (ja) 1987-10-01
WO1986006567A1 (en) 1986-11-06
SE447777B (sv) 1986-12-08
ES554203A0 (es) 1987-09-01
JPH0671221B2 (ja) 1994-09-07
MA20667A1 (fr) 1986-12-31
YU65186A (en) 1991-02-28
SE8501956D0 (sv) 1985-04-22
EP0219537A1 (en) 1987-04-29
AU5812486A (en) 1986-11-18
ATE54520T1 (de) 1990-07-15
FI864967A (fi) 1986-12-05
KR880700554A (ko) 1988-03-15
PT82433B (pt) 1992-07-31
SE8501956L (sv) 1986-10-23
DE3672557D1 (de) 1990-08-16
GR860954B (en) 1986-04-14
CA1257352A (en) 1989-07-11
ES8708102A1 (es) 1987-09-01
EP0219537B1 (en) 1990-07-11
PT82433A (en) 1986-05-01

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Legal Events

Date Code Title Description
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 08/04/2001