NO302008B1 - Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem - Google Patents

Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem Download PDF

Info

Publication number
NO302008B1
NO302008B1 NO905147A NO905147A NO302008B1 NO 302008 B1 NO302008 B1 NO 302008B1 NO 905147 A NO905147 A NO 905147A NO 905147 A NO905147 A NO 905147A NO 302008 B1 NO302008 B1 NO 302008B1
Authority
NO
Norway
Prior art keywords
devices
converter
adjustable
values
filter
Prior art date
Application number
NO905147A
Other languages
English (en)
Norwegian (no)
Other versions
NO905147D0 (no
NO905147L (no
Inventor
Erik Anders Eriksson
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 NO905147D0 publication Critical patent/NO905147D0/no
Publication of NO905147L publication Critical patent/NO905147L/no
Publication of NO302008B1 publication Critical patent/NO302008B1/no

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
    • 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)
  • Analogue/Digital Conversion (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Facsimile Transmission Control (AREA)
  • Mobile Radio Communication Systems (AREA)
NO905147A 1989-04-27 1990-11-28 Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem NO302008B1 (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8901542A SE463589B (sv) 1989-04-27 1989-04-27 Foerfarande foer att undvika felaktig ekoeliminering och/eller utjaemning till foeljd av olinjaeriteter i en d/a-omvandlare och/eller en a/d-omvandlare i en telekommunikationsanlaeggning, samt anordning foer utoevande av foerfarandet i samband med d/a-omvandling och anordning foer utoevande av foerfarandet i samband med a/d-omvandling
PCT/SE1990/000177 WO1990013185A1 (en) 1989-04-27 1990-03-20 A method and arrangement for avoiding erroneous echo-elimination and/or equalization in a telecommunication system

Publications (3)

Publication Number Publication Date
NO905147D0 NO905147D0 (no) 1990-11-28
NO905147L NO905147L (no) 1990-11-28
NO302008B1 true NO302008B1 (no) 1998-01-05

Family

ID=20375822

Family Applications (1)

Application Number Title Priority Date Filing Date
NO905147A NO302008B1 (no) 1989-04-27 1990-11-28 Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem

Country Status (15)

Country Link
US (1) US5189637A (sv)
EP (1) EP0399968B1 (sv)
JP (1) JP3124771B2 (sv)
KR (1) KR950014543B1 (sv)
AU (1) AU622799B2 (sv)
BR (1) BR9006719A (sv)
CA (1) CA2030623C (sv)
DE (1) DE69006634T2 (sv)
DK (1) DK0399968T3 (sv)
ES (1) ES2049459T3 (sv)
FI (1) FI100371B (sv)
IE (1) IE65531B1 (sv)
NO (1) NO302008B1 (sv)
SE (1) SE463589B (sv)
WO (1) WO1990013185A1 (sv)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5157653A (en) * 1990-08-03 1992-10-20 Coherent Communications Systems Corp. Residual echo elimination with proportionate noise injection
SE501248C2 (sv) * 1993-05-14 1994-12-19 Ericsson Telefon Ab L M Metod och ekosläckare för ekoutsläckning med ett antal kaskadkopplade adaptiva filter
US5650954A (en) * 1996-01-30 1997-07-22 Seagate Technology, Inc. Frequency and time domain adaptive filtration in a sampled communication channel
US5812537A (en) * 1995-09-29 1998-09-22 Paradyne Corporation Echo canceling method and apparatus for data over cellular
DE19611941C1 (de) * 1996-03-26 1997-12-11 Siemens Ag Schaltungsanordnung zur Leitungsanpassung und Echounterdrückung
US6184692B1 (en) * 1997-10-29 2001-02-06 Lucent Technologies, Inc. Loop back test apparatus and technique
US6028929A (en) * 1997-11-14 2000-02-22 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having improved non-linear echo path detection
AU1463800A (en) 1998-11-02 2000-05-22 Broadcom Corporation Measurement of nonlinear distortion in transmitters
DE10005620A1 (de) 2000-02-09 2001-08-30 Infineon Technologies Ag Schaltungsanordnung
US6813311B1 (en) 2000-03-14 2004-11-02 Globespan Virata Corporation Non-linear echo cancellation for wireless modems and the like
DE10318603B4 (de) 2003-04-24 2005-03-10 Infineon Technologies Ag Eingangsempfängerschaltung
US20050035891A1 (en) * 2003-08-14 2005-02-17 Tripath Technology, Inc. Digital-to-analog converter with level control
JP2009135595A (ja) * 2007-11-28 2009-06-18 Sony Corp スイッチトキャパシタ回路、スイッチトキャパシタフィルタ、およびシグマデルタａｄ変換器

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor
US4129863A (en) * 1977-10-03 1978-12-12 Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4200863A (en) * 1977-10-03 1980-04-29 The Regents Of The University Of California Weighted capacitor analog/digital converting apparatus and method
US4476456A (en) * 1981-11-03 1984-10-09 Texas Instruments Incorporated Combination of an analog to digital converter and sampling switch
US4669116A (en) * 1982-12-09 1987-05-26 Regents Of The University Of California Non-linear echo cancellation of data signals
NL8600815A (nl) * 1986-03-28 1987-10-16 At & T & Philips Telecomm Inrichting voor het kompenseren van niet-lineaire vervorming in een te digitaliseren ingangssignaal en een echokompensatiestelsel voorzien van een dergelijke inrichting.
NL8700983A (nl) * 1987-04-27 1988-11-16 Philips Nv Digitaal-analoog omzetter.
EP0313706B1 (en) * 1987-10-30 1992-04-29 International Business Machines Corporation Analog-to-digital and digital-to-analog conversion system and echo cancellation device including the same
US4999830A (en) * 1989-09-25 1991-03-12 At&T Bell Laboratories Communication system analog-to-digital converter using echo information to improve resolution
US4977591A (en) * 1989-11-17 1990-12-11 Nynex Corporation Dual mode LMS nonlinear data echo canceller

Also Published As

Publication number Publication date
IE65531B1 (en) 1995-11-01
KR950014543B1 (en) 1995-12-05
FI100371B (sv) 1997-11-14
WO1990013185A1 (en) 1990-11-01
NO905147D0 (no) 1990-11-28
AU622799B2 (en) 1992-04-16
EP0399968B1 (en) 1994-02-16
JPH03505661A (ja) 1991-12-05
FI905993A0 (fi) 1990-12-04
IE901466L (en) 1990-10-27
BR9006719A (pt) 1991-08-06
CA2030623C (en) 2001-10-16
EP0399968A1 (en) 1990-11-28
DE69006634T2 (de) 1994-05-26
AU5563890A (en) 1990-11-16
CA2030623A1 (en) 1990-10-28
KR920700498A (ko) 1992-02-19
NO905147L (no) 1990-11-28
SE8901542L (sv) 1990-10-28
SE463589B (sv) 1990-12-10
DK0399968T3 (da) 1994-06-06
JP3124771B2 (ja) 2001-01-15
ES2049459T3 (es) 1994-04-16
DE69006634D1 (de) 1994-03-24
US5189637A (en) 1993-02-23
SE8901542D0 (sv) 1989-04-27

Similar Documents

Publication Publication Date Title
NO302008B1 (no) Fremgangsmåte og anordning for å unngå feilaktig ekkoeliminering og/eller utjevning i et telekommunikasjonssystem
US4590458A (en) Offset removal in an analog to digital conversion system
US4237463A (en) Directional coupler
AU639839B2 (en) Analog-to-digital converter circuit
NO314707B1 (no) Måling av konvergens ved adaptive filtre
US10536159B2 (en) Method for improving feedback circuit performance
NO167348B (no) Fremgangsmaate for aa kompensere for avkuttingsfeilen i et samplet signal, samt en anordning for aa utfoere fremgangsmaaten.
KR910005650A (ko) 고스트 제거 시스템 및 그 제어 방법
JPH07118648B2 (ja) アナログ・デジタル変換器
US4591855A (en) Apparatus for controlling a plurality of current sources
Prokopenko et al. The synthesis of the correction circuit of the high speed sensors of the physical quantities and current-voltage converters with the parasitic capacitance
CN108476181A (zh) 差分信号补偿方法和装置
KR20010075117A (ko) 아날로그-디지털 변환기
CN101422032A (zh) 视频信号处理装置和视频信号处理方法
US12007273B2 (en) Method of stabilizing data of digital signals
JPS637026A (ja) 入出力学習装置
US7330603B2 (en) Method and device for electronic image capture in several zones
GB2195068A (en) Switched capacitor filters
EP0167234A1 (en) An adaptive hybrid
SU909596A1 (ru) Способ линеаризации амплитудной характеристики параметрического измерительного преобразовател и устройство дл его осуществлени
GB2385225A (en) Defect detecting method in infrared thermal imaging system.
SU951725A1 (ru) Устройство дл адаптивной коррекции межсимвольных искажений
SU1480097A1 (ru) Аттенюатор
RU2019049C1 (ru) Система передачи данных
JP2016086312A (ja) 信号処理装置及び信号処理方法

Legal Events

Date Code Title Description
MM1K Lapsed by not paying the annual fees

Free format text: LAPSED IN SEPTEMBER 2003