ES2054326T3 - Un metodo para adaptar un algoritmo de viterbi a un canal que tiene propiedades de transmision variables, y aparato para llevar a cabo el metodo. - Google Patents

Un metodo para adaptar un algoritmo de viterbi a un canal que tiene propiedades de transmision variables, y aparato para llevar a cabo el metodo.

Info

Publication number
ES2054326T3
ES2054326T3 ES90850301T ES90850301T ES2054326T3 ES 2054326 T3 ES2054326 T3 ES 2054326T3 ES 90850301 T ES90850301 T ES 90850301T ES 90850301 T ES90850301 T ES 90850301T ES 2054326 T3 ES2054326 T3 ES 2054326T3
Authority
ES
Spain
Prior art keywords
viterbi
analyser
channel
estimation
transition
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 - Lifetime
Application number
ES90850301T
Other languages
English (en)
Inventor
Bjorn Olof Gudmundson Perols
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson 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
Application filed by Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Application granted granted Critical
Publication of ES2054326T3 publication Critical patent/ES2054326T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
    • H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
    • 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
    • H04L25/03292—Arrangements for operating in conjunction with other apparatus with channel estimation circuitry

Abstract

UN ECUALIZADOR (11) CON UN ANALIZADOR VITERBI ADAPTADOR Y CIRCUITOS DE ESTIMACION DE CANALES (CEST1, ...CEST16), CADA UNO DE LOS CUALES TIENE CONECTADO UN ESTADO (1, ... 16) DEL ANALIZADOR VITERBI (VIT1). EL CANALIZADOR (11) RECIBE UNA SEÑAL (Y(N)), QUE HA SIDO FILTRADA Y PROBADA EN MOMENTOS CONCRETOS Y DECIDIDOS (N) Y QUE DURANTE SU TRANSMISION HA ESTADO SUJETA A DISPERSION TEMPORAL. PARA CADA ESTADO (1-16) LOS CIRCUITOS DE ESTIMACION (CEST1, ... CEST16) ESTIMAN CADA UNO UNA PARTE DE LA RESPUESTA DE IMPULSO (C SUB 1 (N), ... C SUB 16) PARA EL CANAL. LA ESTIMACION ES ITERATIVA E INCLUYE LOS PASOS: EL ANALIZADOR VITERBI CALCULA LAS SEÑALES DE ERROR EN LA TRANSMISION ENTRE UN ESTADO ANTERIOR Y OTRO NUEVO CON LA AYUDA DE LA RESPUESTA DE IMPULSO DE UNA PARTE ANTERIOR. EL ANALIZADOR VITERBI (VIT1) SELECCIONA LOS MEJORES (E SUB I, 1 ... E SUB P, 16) DE ENTRE LAS SEÑALES DE ERROR DE TRANSICION, LAS RESPUESTAS DE IMPULSO DE LA PARTE ANTERIOR (C SUB I (N-1), ... C SUB P (N-1)) Y VECTORES DE TRANSICION (S SUB I1, ... S SUB P16). LOS CIRCUITOS DE ESTIMACION (CEST1, ... CEST16) ESTIMAN LAS RESPUESTAS DE IMPULSO DE LA PARTE NUEVA (C SUB 1 (N)-, ... , C SUB 16 (N)) PARA EL NUEVO ESTADO (N) CON LA AGUDA DE LAS RESPUESTAS DE IMPULSO DE LA PARTE ANTERIOR (C SUB 1 (N-1), ... C SUB P (N-1)), LOS VECTORES DE TRANSICION (S SUB I1, ... S SUB P16) Y LAS SEÑALES DE ERROR DE TRANSICION (E SUB I1, ... E SUB P16). LAS RESPUESTAS DEL IMPULSO DE LA PARTE (C SUB 1 (N), ... C SUB 16 (N)) SE UTILIZAN PARA LA ESTIMACION DE SIMBOLOS (*(N-L)).
ES90850301T 1989-10-24 1990-09-10 Un metodo para adaptar un algoritmo de viterbi a un canal que tiene propiedades de transmision variables, y aparato para llevar a cabo el metodo. Expired - Lifetime ES2054326T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8903526A SE464902B (sv) 1989-10-24 1989-10-24 Foerfarande att adaptera en viterbialgoritm till en kanal med skiftande oeverfoeringsegenskaper samt en anordning foer genomfoerande av foerfarandet

Publications (1)

Publication Number Publication Date
ES2054326T3 true ES2054326T3 (es) 1994-08-01

Family

ID=20377260

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90850301T Expired - Lifetime ES2054326T3 (es) 1989-10-24 1990-09-10 Un metodo para adaptar un algoritmo de viterbi a un canal que tiene propiedades de transmision variables, y aparato para llevar a cabo el metodo.

Country Status (17)

Country Link
US (1) US5164961A (es)
EP (1) EP0425458B1 (es)
JP (1) JPH04502695A (es)
KR (1) KR970007615B1 (es)
AT (1) ATE107102T1 (es)
AU (1) AU626471B2 (es)
CA (1) CA2044261C (es)
DE (1) DE69009674T2 (es)
DK (1) DK0425458T3 (es)
ES (1) ES2054326T3 (es)
FI (1) FI912862A0 (es)
HK (1) HK123194A (es)
IE (1) IE65267B1 (es)
NO (1) NO302730B1 (es)
NZ (1) NZ235350A (es)
SE (1) SE464902B (es)
WO (1) WO1991007035A1 (es)

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Also Published As

Publication number Publication date
NO912432L (no) 1991-06-21
DE69009674D1 (de) 1994-07-14
ATE107102T1 (de) 1994-06-15
EP0425458A1 (en) 1991-05-02
IE65267B1 (en) 1995-10-18
DE69009674T2 (de) 1994-09-22
CA2044261C (en) 1999-04-27
FI912862A0 (fi) 1991-06-13
DK0425458T3 (da) 1994-10-03
JPH04502695A (ja) 1992-05-14
EP0425458B1 (en) 1994-06-08
NO912432D0 (no) 1991-06-21
SE8903526D0 (sv) 1989-10-24
SE8903526L (sv) 1991-04-25
IE903522A1 (en) 1991-04-24
KR970007615B1 (ko) 1997-05-13
KR920702125A (ko) 1992-08-12
WO1991007035A1 (en) 1991-05-16
AU626471B2 (en) 1992-07-30
US5164961A (en) 1992-11-17
HK123194A (en) 1994-11-18
AU6549290A (en) 1991-05-31
NZ235350A (en) 1993-04-28
SE464902B (sv) 1991-06-24
NO302730B1 (no) 1998-04-14
CA2044261A1 (en) 1991-04-25

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