CA2076997C - Appareil et methode de filtrage adaptatif de signaux a variation temporelle utilisant plusieurs algorithmes de filtrage - Google Patents

Appareil et methode de filtrage adaptatif de signaux a variation temporelle utilisant plusieurs algorithmes de filtrage

Info

Publication number
CA2076997C
CA2076997C CA 2076997 CA2076997A CA2076997C CA 2076997 C CA2076997 C CA 2076997C CA 2076997 CA2076997 CA 2076997 CA 2076997 A CA2076997 A CA 2076997A CA 2076997 C CA2076997 C CA 2076997C
Authority
CA
Canada
Prior art keywords
symbols
signal
filtering algorithm
time
rls
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 - Fee Related
Application number
CA 2076997
Other languages
English (en)
Inventor
James C. Baker
Henry L. Kazecki
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.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA2076997C publication Critical patent/CA2076997C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03401—PSK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H04L2025/03471—Tapped delay lines
    • H04L2025/03484—Tapped delay lines time-recursive
    • H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03726—Switching between algorithms

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Filters That Use Time-Delay Elements (AREA)
CA 2076997 1991-09-30 1992-08-27 Appareil et methode de filtrage adaptatif de signaux a variation temporelle utilisant plusieurs algorithmes de filtrage Expired - Fee Related CA2076997C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US76998391A 1991-09-30 1991-09-30
US769,983 1991-09-30

Publications (1)

Publication Number Publication Date
CA2076997C true CA2076997C (fr) 1996-12-10

Family

ID=25087110

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2076997 Expired - Fee Related CA2076997C (fr) 1991-09-30 1992-08-27 Appareil et methode de filtrage adaptatif de signaux a variation temporelle utilisant plusieurs algorithmes de filtrage

Country Status (3)

Country Link
CA (1) CA2076997C (fr)
GB (1) GB2260068B (fr)
MX (1) MX9205516A (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2738967B1 (fr) * 1995-09-15 1997-12-05 France Telecom Dispositif d'egalisation adaptatif pour systemes de communications numeriques
US5742642A (en) * 1996-10-29 1998-04-21 Telefonaktiebolaget Lm Ericsson Signal processing method and apparatus for reducing equalizer error
US6581080B1 (en) 1999-04-16 2003-06-17 Sony United Kingdom Limited Digital filters
GB9908813D0 (en) * 1999-04-16 1999-06-09 Sony Uk Ltd Digital filtering
JP3296330B2 (ja) * 1999-05-20 2002-06-24 日本電気株式会社 適応フィルタ、適応フィルタの制御方法及びプログラムを記憶した記憶媒体
GB2357938A (en) * 1999-12-24 2001-07-04 Nokia Networks Oy Selecting one of a plurality of equalisation algorithms
DE10013790A1 (de) * 2000-03-20 2001-11-22 Sel Alcatel Ag Elektrische Schaltung zur Verarbeitung eines verzerrten Eingangssignals, insbesondere zum Empfangen von digitalen optischen Signalen
AU2001266258A1 (en) * 2000-07-05 2002-01-14 Nokia Networks Oy Equalizer, and associated method therefor, for a receiving station
US6853681B1 (en) 2000-11-28 2005-02-08 Telefonaktiebolaget L M Ericsson (Publ) Using different channel models for different training sequences
FR2871236B1 (fr) * 2004-06-02 2006-09-01 Gervais Danone Sa Procede de controle d'un processus microbiologique a partir des derivees temporelles successives des variables d'etat
US9100257B2 (en) * 2012-01-25 2015-08-04 Marvell World Trade Ltd. Systems and methods for composite adaptive filtering
CN105866068B (zh) * 2016-03-28 2020-04-24 北京航空航天大学 一种基于递推最小二乘法的激光吸收光谱谐波信号峰值点提取方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2554996B1 (fr) * 1983-11-14 1986-02-28 Labo Electronique Physique Procede et dispositif pour la determination de la position optimale du coefficient de reference d'un egaliseur adaptatif
GB8511835D0 (en) * 1985-05-10 1985-06-19 British Telecomm Adaptive digital filter
EP0345675B1 (fr) * 1988-06-09 1995-01-04 National Semiconductor Corporation Algorithme hybride stochastique du gradient pour la convergence de filters adaptatifs
FI83010C (fi) * 1989-08-24 1991-05-10 Nokia Data Systems Foerfarande foer finavstaemning av en utjaemnare foer anvaendning i ett dataoeverfoeringssystems mottagare.
EP0426026B1 (fr) * 1989-10-31 1996-08-28 Mitsubishi Denki Kabushiki Kaisha Egaliseur
US5230007A (en) * 1991-06-28 1993-07-20 Motorola, Inc. Method for optimizing an adaptive filter update coefficient
AU655384B2 (en) * 1991-07-26 1994-12-15 General Instrument Corporation Carrier phase recovery for an adaptive equalizer

Also Published As

Publication number Publication date
GB9220184D0 (en) 1992-11-04
GB2260068B (en) 1995-11-15
GB2260068A (en) 1993-03-31
MX9205516A (es) 1993-03-01

Similar Documents

Publication Publication Date Title
US5241545A (en) Apparatus and method for recovering a time-varying signal using multiple sampling points
CA2076123C (fr) Egaliseur a decision retroactive pour systeme radio cellulaire numerique
US5285480A (en) Adaptive MLSE-VA receiver for digital cellular radio
EP1254542B1 (fr) Procede pour recevoir un signal et recepteur correspondant
US5249205A (en) Order recursive lattice decision feedback equalization for digital cellular radio
CA2186329C (fr) Dispositif et methode de detection de signaux de donnees en presence de distorsion et de brouillage dans les systemes de communication
US7580455B2 (en) Decision feedback equalization with fractionally-spaced feedback data
EP0615347B1 (fr) Recepteur a egalisation adaptative et recepteur a estimation de sequence a probabilite maximum
EP0519891A2 (fr) Démodulateur de phase pour canaux avec évanouissement multivoie
US5257265A (en) Method and apparatus for reducing multipath distortion
WO1998001963A1 (fr) Reduction des interferences entre co-canaux dans des liaisons en diversite
EP0801772A1 (fr) Appareil et procede d'elimination adaptative des interferences a bande etroite dans les communications a acces multiples
KR20020064996A (ko) 정보 심볼 시퀀스 검출 방법 및 이 방법을 수행하는이동국
US5182749A (en) Receiver for recovering data in a forward and reverse direction in time
GB2260068A (en) Recovering a time-varying signal using multiple adaptive filtering algorithms
US5361400A (en) Apparatus and method for removing distortion in a received signal
AU682700B2 (en) Digital radio communication equipment
Masoomzadeh-Fard et al. Nonlinear equalization of multipath fading channels with noncoherent demodulation
US6782046B1 (en) Decision-directed adaptation for coded modulation
JP3224468B2 (ja) データ受信装置
US20020167999A1 (en) Equalizer, receiver, and equalization method and reception method
JPH0490614A (ja) 等化器
KR960014680B1 (ko) 신호 등화 장치 및 데이터 신호 등화 방법
JPH06350467A (ja) デジタル通信用受信機
US20060193411A1 (en) Digital receiver method and apparatus using differential detection and equalization-based techniques

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed