ES2050418T3 - Un metodo para controlar rapidamente la frecuencia de un radiorreceptor coherente y un aparato para llevar a cabo el metodo. - Google Patents

Un metodo para controlar rapidamente la frecuencia de un radiorreceptor coherente y un aparato para llevar a cabo el metodo.

Info

Publication number
ES2050418T3
ES2050418T3 ES90850004T ES90850004T ES2050418T3 ES 2050418 T3 ES2050418 T3 ES 2050418T3 ES 90850004 T ES90850004 T ES 90850004T ES 90850004 T ES90850004 T ES 90850004T ES 2050418 T3 ES2050418 T3 ES 2050418T3
Authority
ES
Spain
Prior art keywords
signal
sequence
points
viterbi algorithm
empty
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
ES90850004T
Other languages
English (en)
Inventor
Paul Wilkinson Dent
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 ES2050418T3 publication Critical patent/ES2050418T3/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
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2338—Demodulator circuits; Receiver circuits using non-coherent demodulation using sampling
    • 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
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Error Detection And Correction (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Noise Elimination (AREA)
  • Radio Relay Systems (AREA)
  • Transceivers (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Steroid Compounds (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

LA INVENCION SE REFIERE A UN METODO Y A UNA DISPOSICION PARA CONTROLAR RAPIDAMENTE LA FRECUENCIA DE UN RECEPTOR DE RADIO QUE RECIBE SECUENCIAS DE SEÑALES QUE HAN ESTADO SOMETIDAS A INTERFERENCIA, Y QUE INCLUYEN UNA SECUENCIA DE SINCRONIZACION Y UNA SECUENCIA DE DATOS. LA SECUENCIA DE SEÑALES SE CONVIERTEN EN UN CONVERTIDOR A/D (ANALOGICO-NUMERICO) PARA PROPORCIONAR PUNTOS DE SEÑALES (ER) QUE SE PRETENDE ANALIZAR, Y UN ALGORITMO VITERBI (10) ESTA ADAPTADO (12, 13) CON AYUDA DE SEÑALES DE ADAPTACION (U1K) OBTENIDAS DE LA SECUENCIA DE SINCRONIZACION DE LAS INTERFERENCIAS DOMINANTES. LA SECUENCIA DE DATOS ES VITERBI ANALIZADA A TRAVES DE UN GRAN NUMERO DE FASES DE CALCULO, CON EL FIN DE DETERMINAR LA SECUENCIA DE BIT (S1) DE LA SECUENCIA DE DATOS. DE CONFORMIDAD CON LA INVENCION, EL PUNTO DE SEÑAL (ER) SE BIFURCA A PUNTOS DE SEÑAL DE BIFURCACION (ER), EL NUMERO DE LOS CUALES ES IGUAL AL NUMERO DE ESTADOS DEL ALGORITMO VITERBI (10). CADA PUNTO INDIVIDUAL DE SEÑALES DE BIFURCACION ESTA DESFASADO(20) A UN PUNTO CORREGIDO DE BIFURCACION (ER,1), Y SE COMPARA (21) CON SU SEÑAL DE ADAPTACION (U1K), QUE TIENE PUNTOS DE SEÑALES (K) SEPARADOS. DISTANCIAS ( ST,1K) Y DESVIACIONES ANGULARES ( (VACIO)T,1K) SE CALCULAN ENTRE EL PUNTO DE SEÑALES CORREGIDO (ER,1) Y LOS PUNTOS DE SEÑALES (U1K) DE LA SEÑAL DE ADAPTACION. UNA TRANSICION (K1) SE SELECCIONA A TRAVES DEL ALGORITMO VITERBI (10), CON AYUDA DE LAS DISTANCIAS ( ST,1K) Y SE SELECCIONA (22) LA DESVIACION ANGULAR ( (VACIO)T,1K) CORRSPONDIENTE. LAS DESVIACIONES ( (VACIO)T,1K) ANGULARES SELECCIONADAS PARA PUNTOS DE SEÑALES (ER) SUCESIVAMENTE ENTRANTES SE FILTREN CONTRA EL PASO DE BAJAS FRECUENCIAS E INTEGREN (22) PARA FORMAR UNA SEÑAL DE CORRECCION DE FASE (V), A CUYO TRAVES SE DESVIA (20) LA FASE DE LOS PUNTOS (ER) DE SEÑALES DE BIFURCACION SUCESIVAMENTE ENTRANTES. SE CALCULAN CORRESPONDIENTES SEÑALES DE CORRECCION DE FASE PARA LOS ESTATOS RESTANTES DEL ALGORITMO VITERBI (10).
ES90850004T 1989-01-26 1990-01-04 Un metodo para controlar rapidamente la frecuencia de un radiorreceptor coherente y un aparato para llevar a cabo el metodo. Expired - Lifetime ES2050418T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8900281A SE462942B (sv) 1989-01-26 1989-01-26 Saett och anordning foer snabb frekvensstyrning av en koherent radiomottagare

Publications (1)

Publication Number Publication Date
ES2050418T3 true ES2050418T3 (es) 1994-05-16

Family

ID=20374868

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90850004T Expired - Lifetime ES2050418T3 (es) 1989-01-26 1990-01-04 Un metodo para controlar rapidamente la frecuencia de un radiorreceptor coherente y un aparato para llevar a cabo el metodo.

Country Status (21)

Country Link
US (1) US5136616A (es)
EP (1) EP0381636B1 (es)
JP (1) JPH0710073B2 (es)
KR (1) KR960000607B1 (es)
CN (1) CN1020531C (es)
AT (1) ATE103444T1 (es)
AU (1) AU621183B2 (es)
CA (1) CA2007325C (es)
DE (1) DE69007505T2 (es)
DK (1) DK0381636T3 (es)
ES (1) ES2050418T3 (es)
FI (1) FI904709A7 (es)
HK (1) HK75494A (es)
IE (1) IE64210B1 (es)
MY (1) MY104866A (es)
NO (1) NO301918B1 (es)
NZ (1) NZ232080A (es)
PT (1) PT92980B (es)
SE (1) SE462942B (es)
SG (1) SG83994G (es)
WO (1) WO1990009069A1 (es)

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE462943B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer frekvensstyrning av en koherent radiomottagare
SE465245B (sv) * 1989-12-22 1991-08-12 Ericsson Telefon Ab L M Foerfarande att utfoera kanalestimering foer en faedande kanal vid oeverfoering av symbolsekvenser
US5241688A (en) * 1990-12-17 1993-08-31 Motorola, Inc. Frequency and time slot synchronizaton using adaptive filtering
FI89431C (fi) * 1991-05-14 1993-09-27 Nokia Mobile Phones Ltd Grovinstaellning av kanalfrekvensen
DE69528255T2 (de) * 1994-04-08 2003-08-07 Echelon Corp., Palo Alto Verfahren und gerät zur sicheren winkelmodulationsbasierten kommunikation
FI96257C (fi) * 1994-04-13 1996-05-27 Nokia Telecommunications Oy Menetelmä radiotaajuisen signaalin vaihevirheen määrittämiseksi, sekä vastaanotin
US5568518A (en) * 1994-09-14 1996-10-22 Ericsson Ge Mobile Communications Inc. Fast automatic gain control
US5586128A (en) * 1994-11-17 1996-12-17 Ericsson Ge Mobile Communications Inc. System for decoding digital data using a variable decision depth
US5568520A (en) * 1995-03-09 1996-10-22 Ericsson Inc. Slope drift and offset compensation in zero-IF receivers
DE19517405A1 (de) * 1995-05-16 1996-11-21 Thomson Brandt Gmbh Signalverarbeitungssystem für digitale Signale
JP3624547B2 (ja) * 1996-05-21 2005-03-02 ソニー株式会社 バースト信号受信方法及び装置
US6185259B1 (en) 1996-06-12 2001-02-06 Ericsson Inc. Transmitter/receiver for GMSK and offset-QAM
SE506847C2 (sv) * 1996-06-28 1998-02-16 Ericsson Telefon Ab L M Förfarande och anordning vid fasmodulerade signaler
US5884178A (en) * 1996-11-27 1999-03-16 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for estimating speed of a mobile station in a cellular communications system
US5878093A (en) * 1996-12-16 1999-03-02 Ericsson Inc. Interference rejection combining with frequency correction
US6320914B1 (en) 1996-12-18 2001-11-20 Ericsson Inc. Spectrally efficient modulation using overlapped GMSK
EP0895386B1 (de) * 1997-07-31 2003-01-29 Micronas Semiconductor Holding AG Trägerregelkreis für einen Empfänger von digital übertragenen Signalen
US6084862A (en) * 1997-09-26 2000-07-04 Telefonaktiebolaget Lm Ericsson Time dispersion measurement in radio communications systems
SE520420C2 (sv) * 1997-10-28 2003-07-08 Ericsson Telefon Ab L M Anordning samt förfarande för att identifiera batterityp samt för att mäta batteritemperatur
US6205183B1 (en) 1998-05-29 2001-03-20 Ericsson Inc. Methods of suppressing reference oscillator harmonic interference and related receivers
US6278867B1 (en) 1998-11-25 2001-08-21 Ericsson Inc. Methods and systems for frequency generation for wireless devices
US6567475B1 (en) 1998-12-29 2003-05-20 Ericsson Inc. Method and system for the transmission, reception and processing of 4-level and 8-level signaling symbols
US6680969B1 (en) 1999-03-22 2004-01-20 Ericsson, Inc. Methods for estimating doppler spreads including autocorrelation function hypotheses and related systems and receivers
US6270305B1 (en) * 1999-06-11 2001-08-07 Btu International, Inc. High temperature conveyor furnace with low friction conveyor travel surface
US6625236B1 (en) 2000-02-08 2003-09-23 Ericsson Inc. Methods and systems for decoding symbols by combining matched-filtered samples with hard symbol decisions
US6954489B2 (en) * 2001-01-02 2005-10-11 Telefonaktiebolaget L M Ericsson (Publ) Determining correlations of received sequences to multiple known sequences in a communications system
RU2232474C2 (ru) * 2002-07-17 2004-07-10 Федеральное государственное унитарное предприятие "Ростовский-на-Дону научно-исследовательский институт радиосвязи" Способ и устройство синхронизации и устранения фазовой неоднозначности сигналов систем связи
EP1587234A1 (en) * 2004-04-14 2005-10-19 Deutsche Thomson-Brandt Gmbh Adaptive viterbi detector
US20110200828A1 (en) * 2010-02-16 2011-08-18 Biocoat Incorporated Hydrophilic coatings for medical devices
EP2506516A1 (en) * 2011-03-31 2012-10-03 Alcatel Lucent Method of decoding optical data signals
EP2538596B1 (en) 2011-06-21 2014-05-14 Alcatel Lucent Method of decoding a differentially encoded phase modulated optical data signal

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4027250A (en) * 1975-10-21 1977-05-31 Lang Gordon R Apparatus and method for reducing effects of amplitude and phase jitter
FR2375773A1 (fr) * 1976-12-23 1978-07-21 Ibm France Procede et dispositif de detection de phase adaptatifs
US4151491A (en) * 1977-09-28 1979-04-24 Harris Corporation Technique for supplying reference for an adaptive equalizer when multiple phase signals are transmitted
FR2428946A1 (fr) * 1978-06-13 1980-01-11 Ibm France Procede et dispositif pour initialiser un egaliseur adaptatif a partir d'un signal de donnees inconnu dans un systeme de transmission utilisant la modulation d'amplitude en quadrature
US4234957A (en) * 1978-12-04 1980-11-18 Gte Automatic Electric Laboratories Incorporated Method and apparatus for generating timing phase error signals in PSK demodulators
FR2468258B1 (fr) * 1979-10-19 1987-06-26 Cit Alcatel Circuit de correction des bruits de phase pour un systeme de transmission
US4466108A (en) * 1981-10-06 1984-08-14 Communications Satellite Corporation TDMA/PSK Carrier synchronization without preamble
FR2546008B1 (fr) * 1983-05-11 1985-07-12 Labo Electronique Physique Circuit d'egalisation adaptative et de demodulation conjointes
IT1188626B (it) * 1986-03-25 1988-01-20 Gte Telecom Spa Metodo e dispositivo di equalizzazione adattiva cieca
NO163120C (no) * 1987-05-19 1990-04-04 Sintef Fremgangsmaate ved demodulasjon i digitale kommunikasjonssystemer med flerbane-propagasjon.
US4885757A (en) * 1987-06-01 1989-12-05 Texas Instruments Incorporated Digital adaptive receiver employing maximum-likelihood sequence estimation with neural networks
CA1288878C (en) * 1988-08-15 1991-09-10 John D. Mcnicol Timing and carrier recovery in tdma without preamable sequence
SE462943B (sv) * 1989-01-26 1990-09-17 Ericsson Telefon Ab L M Saett och anordning foer frekvensstyrning av en koherent radiomottagare

Also Published As

Publication number Publication date
PT92980B (pt) 1997-12-31
IE900182L (en) 1990-07-26
IE64210B1 (en) 1995-07-26
JPH03503828A (ja) 1991-08-22
SE8900281L (sv) 1990-07-27
SE462942B (sv) 1990-09-17
PT92980A (pt) 1990-07-31
NO903942D0 (no) 1990-09-10
SG83994G (en) 1994-11-25
NZ232080A (en) 1992-11-25
KR960000607B1 (ko) 1996-01-09
ATE103444T1 (de) 1994-04-15
CA2007325A1 (en) 1990-07-26
MY104866A (en) 1994-06-30
DE69007505T2 (de) 1994-06-30
EP0381636B1 (en) 1994-03-23
JPH0710073B2 (ja) 1995-02-01
AU4849990A (en) 1990-08-24
SE8900281D0 (sv) 1989-01-26
EP0381636A1 (en) 1990-08-08
KR910700576A (ko) 1991-03-15
HK75494A (en) 1994-08-05
NO301918B1 (no) 1997-12-22
CA2007325C (en) 1996-04-23
CN1020531C (zh) 1993-05-05
DK0381636T3 (da) 1994-07-25
FI904709A0 (fi) 1990-09-25
AU621183B2 (en) 1992-03-05
FI904709A7 (fi) 1990-09-25
WO1990009069A1 (en) 1990-08-09
NO903942L (no) 1990-09-10
US5136616A (en) 1992-08-04
DE69007505D1 (de) 1994-04-28
CN1044560A (zh) 1990-08-08

Similar Documents

Publication Publication Date Title
YU84801A (sh) Poboljšanje sistema za radio pozicioniranje
DK0381636T3 (da) Fremgangsmåde til hurtig indstilling af frekvensen for en kohærent radiomodtager, og apparat til udøvelse af fremgangsmåden
AU2248077A (en) Receiver tuning
NL191275B (nl) Elektronisch afstemstelsel voor een radio-ontvanger.
DE3484478D1 (de) Herbizide cyclohexan-1,3-dion-derivate.
EP0597653A3 (en) Radio frequency circuit for multiple access and time division system.
GB2048620B (en) Method of compensating phase noise at the receiver end of a data transmission system
ZA803661B (en) Synchronisation in communication systems
NO159011C (no) Fremgangsmaate for behandling av en sur vandig fase omfattende sulfationer, titanioner og jernioner.
DE69001643D1 (de) Ringresonatorgyroskop.
FI941713A7 (fi) Menetelmä radiotaajuisen signaalin vaihevirheen määrittämiseksi, sekä vastaanotin
DE68924047D1 (de) Konkurrenzverfahren für Kommunikationsnetze.
DE60035891D1 (de) Pilotsignalsynchronübertragung für ein drahtloses kommunikationssystem
DE3885342D1 (de) CMOS-Empfangsschaltung für niedrigen Spannungshub.
NL7809776A (nl) Ontvanger met automatische, digitale afstemming.
NL176511B (nl) Ontvanger met een zenderzoekschakeling.
NL7810803A (nl) Afstemstelsel voor een televisieontvanger.
NO893825D0 (no) Ring-resonator-gyroskop.
DE69428153D1 (de) Bittaktrückgewinnung für CPFSK-Signale
FR2439513A1 (fr) Modulateur-demodulateur
NO912069L (no) Hule makrosfaerer.
DE69000440D1 (de) Ringresonator-gyroskop.
NO992523D0 (no) FremgangsmÕte for Õ mÕle frekvensdifferanse, samt mottaker
DE69421307D1 (de) Empfänger für mehrstufige digitale Signale
JPS5710543A (en) Ss-tdma synchronizing device

Legal Events

Date Code Title Description
FG2A Definitive protection

Ref document number: 381636

Country of ref document: ES