SE447777B - 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 - Google Patents

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

Info

Publication number
SE447777B
SE447777B SE8501956A SE8501956A SE447777B SE 447777 B SE447777 B SE 447777B SE 8501956 A SE8501956 A SE 8501956A SE 8501956 A SE8501956 A SE 8501956A SE 447777 B SE447777 B SE 447777B
Authority
SE
Sweden
Prior art keywords
signal
parameters
filter
correction
balance
Prior art date
Application number
SE8501956A
Other languages
English (en)
Swedish (sv)
Other versions
SE8501956L (sv
SE8501956D0 (sv
Inventor
A G Bauer
Original Assignee
Ellemtel Utvecklings 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
Publication of SE8501956D0 publication Critical patent/SE8501956D0/xx
Priority to SE8501956A priority Critical patent/SE447777B/sv
Application filed by Ellemtel Utvecklings Ab filed Critical Ellemtel Utvecklings Ab
Priority to NZ215670A priority patent/NZ215670A/xx
Priority to BR8606638A priority patent/BR8606638A/pt
Priority to KR860700915A priority patent/KR880700554A/ko
Priority to US07/009,944 priority patent/US4727543A/en
Priority to AU58124/86A priority patent/AU5812486A/en
Priority to PCT/SE1986/000162 priority patent/WO1986006567A1/fr
Priority to DE8686902923T priority patent/DE3672557D1/de
Priority to JP61502548A priority patent/JPH0671221B2/ja
Priority to AT86902923T priority patent/ATE54520T1/de
Priority to EP86902923A priority patent/EP0219537B1/fr
Priority to GR860954A priority patent/GR860954B/el
Priority to YU00651/86A priority patent/YU65186A/xx
Priority to PT82433A priority patent/PT82433B/pt
Priority to CA000507143A priority patent/CA1257352A/fr
Priority to ES554203A priority patent/ES8708102A1/es
Priority to MA20892A priority patent/MA20667A1/fr
Publication of SE8501956L publication Critical patent/SE8501956L/
Priority to FI864967A priority patent/FI864967A7/fi
Priority to NO864930A priority patent/NO864930L/no
Publication of SE447777B publication Critical patent/SE447777B/sv
Priority to DK618686A priority patent/DK618686D0/da

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)
  • Bidirectional Digital Transmission (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Filters And Equalizers (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
SE8501956A 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 SE447777B (sv)

Priority Applications (20)

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
NZ215670A NZ215670A (en) 1985-04-22 1986-04-02 Duplex digital equalising filter
EP86902923A EP0219537B1 (fr) 1985-04-22 1986-04-08 Procede et appareil de reglage d'un filtre numerique egaliseur pour l'elimination adaptative simultanee d'echos et de parasites causes par l'interference par symboles
US07/009,944 US4727543A (en) 1985-04-22 1986-04-08 Method and apparatus for adjusting a digital equalizing filter
KR860700915A KR880700554A (ko) 1985-04-22 1986-04-08 적합한 에코우 소거 및 중간기호 간섭에 의하여 야기되는 소음의 적합한 소거를 동시에 가지는 디지틀 등화필터를 조절하는 방법 및 장치
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
AU58124/86A AU5812486A (en) 1985-04-22 1986-04-08 Method and apparatus for adjusting a digital equalizing filter in simultaneous adaptive echo elimination and adaptiveelimination of noise caused by intersymbol interference
PCT/SE1986/000162 WO1986006567A1 (fr) 1985-04-22 1986-04-08 Procede et appareil de reglage d'un filtre numerique egaliseur pour l'elimination adaptative simultanee d'echos et de parasites causes par l'interference par symboles
DE8686902923T DE3672557D1 (de) 1985-04-22 1986-04-08 Verfahren und einrichtung zur einstellung eines digitalen entzerrungsfilters bei gleichzeitiger adaptiver echoloeschung und adaptiven intersymbolinterferenzstoerungsbeseitigung.
JP61502548A JPH0671221B2 (ja) 1985-04-22 1986-04-08 適応反響消去と同時に符号間干渉による雑音の適応消去を行うデジタル等化フイルタを調節する方法及び装置
AT86902923T ATE54520T1 (de) 1985-04-22 1986-04-08 Verfahren und einrichtung zur einstellung eines digitalen entzerrungsfilters bei gleichzeitiger adaptiver echoloeschung und adaptiven intersymbolinterferenzstoerungsbeseitigung.
GR860954A GR860954B (en) 1985-04-22 1986-04-10 Method and apparatus for adjusting a digital equalizing filter in simultaneous adaptive echo elimination and adaptive elimination of noise caused by intersymbol interference
ES554203A 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.
YU00651/86A YU65186A (en) 1985-04-22 1986-04-21 Process and device for adjusting digital equilization filter at simultaneously adaptive ellimination of echo effect and noise, which arises from intersymmbolic interference
PT82433A PT82433B (pt) 1985-04-22 1986-04-21 Processo e equipamento para ajustar um filtro igualador digital simultaneamente para a eliminacao do eco de adaptacao e para a eliminacao do ruido de adaptacao e para a eliminacao do ruido de adaptacao causados por interferencia inter-simbolos
CA000507143A CA1257352A (fr) 1985-04-22 1986-04-21 Methode et dispositif pour ajuster un filtre d'egalisation numerique dans l'elimination adaptative simultanee des echos et du bruit cause par le brouillage entre symboles
MA20892A MA20667A1 (fr) 1985-04-22 1986-04-22 Procede et appareil pour ajuster un filtre d'egalisation numerique en suppression adaptive simultannee de l'echo et du bruit provoque par les perturbations entre symboles
FI864967A FI864967A7 (fi) 1985-04-22 1986-12-05 Foerfarande och anordning foer instaellning av ett digitalt utjaemnarfilter vid samtidig adaptiv ekoeliminering och adaptiv eliminering av stoerningar som uppstaor genom intersymbolinterferens.
NO864930A NO864930L (no) 1985-04-22 1986-12-08 Fremgangsmaate og apparat for justering av et digitalt korreksjonsfilter ved samtidig adaptiv ekkoeliminering og adaptiv eliminering av stoey som oppstaar gjennom intersymbol interferens.
DK618686A DK618686D0 (da) 1985-04-22 1986-12-19 Fremgangsmaade og kredslaeb til indstilling af et digitalt udligningsfilter ved samtidig adaptiv ekkoeliminering og adaptiv eliminering af staej, som opstaar ved intersymbolinterferens

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 (3)

Publication Number Publication Date
SE8501956D0 SE8501956D0 (sv) 1985-04-22
SE8501956L SE8501956L (sv) 1986-10-23
SE447777B true SE447777B (sv) 1986-12-08

Family

ID=20359935

Family Applications (1)

Application Number Title Priority Date Filing Date
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

Country Status (18)

Country Link
US (1) US4727543A (fr)
EP (1) EP0219537B1 (fr)
JP (1) JPH0671221B2 (fr)
KR (1) KR880700554A (fr)
AT (1) ATE54520T1 (fr)
AU (1) AU5812486A (fr)
BR (1) BR8606638A (fr)
CA (1) CA1257352A (fr)
DE (1) DE3672557D1 (fr)
ES (1) ES8708102A1 (fr)
FI (1) FI864967A7 (fr)
GR (1) GR860954B (fr)
MA (1) MA20667A1 (fr)
NZ (1) NZ215670A (fr)
PT (1) PT82433B (fr)
SE (1) SE447777B (fr)
WO (1) WO1986006567A1 (fr)
YU (1) YU65186A (fr)

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 (fr) * 1987-12-31 1990-08-07 Northern Telecom Limited Appareil et methode de reduction du bruit dans un recepteur de ligne numerique
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
ES554203A0 (es) 1987-09-01
SE8501956L (sv) 1986-10-23
GR860954B (en) 1986-04-14
DE3672557D1 (de) 1990-08-16
FI864967A0 (fi) 1986-12-05
BR8606638A (pt) 1987-08-04
PT82433A (en) 1986-05-01
SE8501956D0 (sv) 1985-04-22
FI864967A7 (fi) 1986-12-05
YU65186A (en) 1991-02-28
KR880700554A (ko) 1988-03-15
JPS62502581A (ja) 1987-10-01
PT82433B (pt) 1992-07-31
EP0219537B1 (fr) 1990-07-11
JPH0671221B2 (ja) 1994-09-07
MA20667A1 (fr) 1986-12-31
WO1986006567A1 (fr) 1986-11-06
CA1257352A (fr) 1989-07-11
AU5812486A (en) 1986-11-18
US4727543A (en) 1988-02-23
ATE54520T1 (de) 1990-07-15
ES8708102A1 (es) 1987-09-01
EP0219537A1 (fr) 1987-04-29
NZ215670A (en) 1988-10-28

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