DK476981A - Dataransmissionsanlaeg - Google Patents

Dataransmissionsanlaeg

Info

Publication number
DK476981A
DK476981A DK476981A DK476981A DK476981A DK 476981 A DK476981 A DK 476981A DK 476981 A DK476981 A DK 476981A DK 476981 A DK476981 A DK 476981A DK 476981 A DK476981 A DK 476981A
Authority
DK
Denmark
Prior art keywords
vectors
expanded
data transmission
transmission system
decoding
Prior art date
Application number
DK476981A
Other languages
Danish (da)
English (en)
Inventor
A P Clark
M J Fairfield
Original Assignee
Plessey Overseas
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 Plessey Overseas filed Critical Plessey Overseas
Publication of DK476981A publication Critical patent/DK476981A/da

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4917—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using multilevel codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03203—Trellis search techniques
    • H04L25/03229—Trellis search techniques with state-reduction using grouping of states
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03299—Arrangements for operating in conjunction with other apparatus with noise-whitening circuitry

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Probability & Statistics with Applications (AREA)
  • Power Engineering (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Relay Systems (AREA)
  • Communication Control (AREA)
  • Dc Digital Transmission (AREA)
  • Photoreceptors In Electrophotography (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Surgical Instruments (AREA)
  • Holo Graphy (AREA)
  • Optical Communication System (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
DK476981A 1980-10-28 1981-10-28 Dataransmissionsanlaeg DK476981A (da)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8034682A GB2087198B (en) 1980-10-28 1980-10-28 Data decoding

Publications (1)

Publication Number Publication Date
DK476981A true DK476981A (da) 1982-04-29

Family

ID=10516930

Family Applications (1)

Application Number Title Priority Date Filing Date
DK476981A DK476981A (da) 1980-10-28 1981-10-28 Dataransmissionsanlaeg

Country Status (14)

Country Link
US (1) US4484338A (fr)
EP (1) EP0050930B1 (fr)
JP (1) JPS57127349A (fr)
AT (1) ATE12866T1 (fr)
AU (1) AU541651B2 (fr)
CA (1) CA1202726A (fr)
DE (1) DE3170013D1 (fr)
DK (1) DK476981A (fr)
ES (1) ES8300232A1 (fr)
GB (1) GB2087198B (fr)
IE (1) IE52427B1 (fr)
NO (1) NO156229C (fr)
NZ (1) NZ198717A (fr)
ZA (1) ZA817174B (fr)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578800A (en) * 1982-07-12 1986-03-25 Yutaka Yasuda Synchronization circuit for a Viterbi decoder
US4527279A (en) * 1982-07-12 1985-07-02 Kokusai Denshin Denwa Co. Synchronization circuit for a Viterbi decoder
US4646305A (en) * 1983-09-26 1987-02-24 Case Communications, Inc. High speed data modem using multilevel encoding
US4756007A (en) * 1984-03-08 1988-07-05 Codex Corporation Adaptive communication rate modem
US4631735A (en) * 1984-12-28 1986-12-23 Codex Corporation Coded modulation system with feedback
GB8609711D0 (en) * 1986-04-21 1986-05-29 Clark A P Channel estimation & detection
US4945549A (en) * 1986-11-13 1990-07-31 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Trellis coded modulation for transmission over fading mobile satellite channel
EP0293620A1 (fr) * 1987-05-25 1988-12-07 BBC Brown Boveri AG Procédé de transmission de signaux
US4885757A (en) * 1987-06-01 1989-12-05 Texas Instruments Incorporated Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks
US5271042A (en) * 1989-10-13 1993-12-14 Motorola, Inc. Soft decision decoding with channel equalization
KR930004862B1 (ko) * 1990-12-17 1993-06-09 삼성전자 주식회사 상태 평가량 기억장치
US5142551A (en) * 1991-02-28 1992-08-25 Motorola, Inc. Signal weighting system for digital receiver
CA2097693C (fr) * 1991-10-21 1999-12-21 Bruce Dale Mueller Systeme et methode pour determiner une metrique de transition d'etats dans un egaliseur de viterbi
DE4224214C2 (de) * 1992-07-22 1995-02-09 Deutsche Forsch Luft Raumfahrt Verfahren zur quellengesteuerten Kanaldecodierung durch Erweiterung des Viterbi-Algorithmus
US5363412A (en) * 1992-12-28 1994-11-08 Motorola, Inc. Method and apparatus of adaptive maximum likelihood sequence estimation using filtered correlation synchronization
JP3275779B2 (ja) * 1997-06-16 2002-04-22 日本電気株式会社 遅延判定帰還型系列推定受信装置
FR2783120B1 (fr) 1998-09-04 2000-11-24 Nortel Matra Cellular Procede d'egalisation numerique, et recepteur de radiocommunication mettant en oeuvre un tel procede
US6347125B1 (en) 1999-01-11 2002-02-12 Ericsson Inc. Reduced complexity demodulator for multi-bit symbols
US6999510B2 (en) * 2003-04-18 2006-02-14 Optichron, Inc. Nonlinear inversion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130818A (en) * 1977-04-21 1978-12-19 Communications Satellite Corporation Analog threshold decoding
US4171516A (en) * 1977-11-23 1979-10-16 General Electric Company Tone phase shift detector
US4240156A (en) * 1979-03-29 1980-12-16 Doland George D Concatenated error correcting system
US4293953A (en) * 1979-12-28 1981-10-06 The United States Of America As Represented By The Secretary Of The Army Bi-orthogonal PCM communications system employing multiplexed noise codes

Also Published As

Publication number Publication date
ES506607A0 (es) 1982-10-01
DE3170013D1 (en) 1985-05-23
GB2087198A (en) 1982-05-19
IE52427B1 (en) 1987-10-28
NO156229C (no) 1987-08-19
ES8300232A1 (es) 1982-10-01
IE812507L (en) 1982-04-28
ZA817174B (en) 1982-10-27
AU7685681A (en) 1982-05-06
EP0050930B1 (fr) 1985-04-17
JPS57127349A (en) 1982-08-07
CA1202726A (fr) 1986-04-01
AU541651B2 (en) 1985-01-17
NZ198717A (en) 1985-08-16
US4484338A (en) 1984-11-20
GB2087198B (en) 1985-02-27
ATE12866T1 (de) 1985-05-15
EP0050930A1 (fr) 1982-05-05
NO813533L (no) 1982-04-29
NO156229B (no) 1987-05-04

Similar Documents

Publication Publication Date Title
DK476981A (da) Dataransmissionsanlaeg
DK116383A (da) Kommunikation via linier med stoej
IL109843A0 (en) Noncoherent receiver employing a dual-maxima metric generation process
EP0593763A4 (fr) Procede de decodage de vraisemblance maximale et dispositif relatif.
DE3275779D1 (en) Recognition of speech or speech-like sounds
ATE19450T1 (de) System zur uebertragung von digitalen informationssignalen.
HK119295A (en) Apparatus for decoding a digital signal
FR2376563A1 (fr) Procede et schema des circuits assurant la production d'un signal numerique destine au controle de l'element terminal d'un systeme de transmission pcm
JPS5291343A (en) Information processing apparatus
DE3782894D1 (de) Verfahren zur behandlung von daten multiplex/demultiplex sowie vorichtung zur durchfuehrung.
IT1181555B (it) Bottale con superficie munita di aperture adatte all'eliminazione del sale e di altre impurita' nelle pelli salate
Hodgkiss et al. Power normalization sensitivity of adaptive lattice structures
DE50213158D1 (de) Verfahren zur Datenübertragung in einem Rechnersystem
KR19980037111A (ko) 오디오 압축 알고리즘의 병렬 처리 방법
IT1181561B (it) Dispositivo per eliminare il sale dalle pelli grezze prima della concia da un lato o dai due lati
JPS52130674A (en) Device for automatically detecting envelope maximum value of periodic continous wave of high frequency
JPS5731090A (en) Pattern distance calculation devices
NO880597D0 (no) Metode og innretning for oppdrett av muslinger og eventuelt andre sjoedyr.
IT1181537B (it) Dispositivo per eliminare il sale dalle pelli grezze prima della concia
SE9803458D0 (sv) A method of speech processing and an apparatus for processing of speech
JPS56115056A (en) Resynchronization circuit
SE8301690L (sv) Mjuk vattenkana
IT1181500B (it) Dispositivo per la raccolta di liquidi di scarico da bottali per concerie
JPS5663646A (en) Data compression recording method of digital signal
IT1181617B (it) Razzo bersaglio di tipo fumogeno

Legal Events

Date Code Title Description
AHS Application shelved for other reasons than non-payment