MA20667A1 - 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 - Google Patents

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

Info

Publication number
MA20667A1
MA20667A1 MA20892A MA20892A MA20667A1 MA 20667 A1 MA20667 A1 MA 20667A1 MA 20892 A MA20892 A MA 20892A MA 20892 A MA20892 A MA 20892A MA 20667 A1 MA20667 A1 MA 20667A1
Authority
MA
Morocco
Prior art keywords
signal
kappa
epsilon
pct
balance
Prior art date
Application number
MA20892A
Other languages
English (en)
Inventor
Gustav Bauer Anders
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 MA20667A1 publication Critical patent/MA20667A1/fr

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)
MA20892A 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 MA20667A1 (fr)

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 (1)

Publication Number Publication Date
MA20667A1 true MA20667A1 (fr) 1986-12-31

Family

ID=20359935

Family Applications (1)

Application Number Title Priority Date Filing Date
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

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) FI864967A (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
US4727543A (en) 1988-02-23
NZ215670A (en) 1988-10-28
FI864967A0 (fi) 1986-12-05
JPS62502581A (ja) 1987-10-01
WO1986006567A1 (fr) 1986-11-06
SE447777B (sv) 1986-12-08
ES554203A0 (es) 1987-09-01
JPH0671221B2 (ja) 1994-09-07
YU65186A (en) 1991-02-28
SE8501956D0 (sv) 1985-04-22
EP0219537A1 (fr) 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
BR8606638A (pt) 1987-08-04
DE3672557D1 (de) 1990-08-16
GR860954B (en) 1986-04-14
CA1257352A (fr) 1989-07-11
ES8708102A1 (es) 1987-09-01
EP0219537B1 (fr) 1990-07-11
PT82433A (en) 1986-05-01

Similar Documents

Publication Publication Date Title
US4243959A (en) Adaptive filter with tap coefficient leakage
MA20667A1 (fr) 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
CA1202693A (fr) Filtre adaptatif a glissement controle des coefficients de gain de prise
US4615025A (en) Data transmission system
US6118813A (en) Technique for effectively treating robbed bit signaling in data communcations
IE822605L (en) Data transmission
US4964118A (en) Apparatus and method for echo cancellation
ES8302975A1 (es) "un ecualizador adaptativo de retardo".
US5088109A (en) Circuit arrangement for the equalization of digital signals received in analog form
SE8203102L (sv) Adaptiv ekokompenseringsanordning for digital duplexkommunikation via tvatradsledningar
JPS6366093B2 (fr)
SU1485425A1 (ru) Адаптивное дуплексное устройство передачи данных
KR960016015B1 (ko) 고스트 제거를 위한 필터계수 계산방법
JPS62171329A (ja) エコ−消去方式
JPS6359567B2 (fr)
Kimoto et al. A stereophonic echo canceling algorithm for correct echo-path estimation
JPH0779290B2 (ja) エコ−除去装置
JPS58138132A (ja) デ−タモデム用エコ−キヤンセル装置
NO923610D0 (no) Fremgangsmaate og koblingsanordning til kompensasjon av ekkosignaler ved en digitalsignaloverfoering over et totraadssamband
JPH04262627A (ja) エコーキャンセラ装置