FR2367387A1 - Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique - Google Patents

Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique

Info

Publication number
FR2367387A1
FR2367387A1 FR7630684A FR7630684A FR2367387A1 FR 2367387 A1 FR2367387 A1 FR 2367387A1 FR 7630684 A FR7630684 A FR 7630684A FR 7630684 A FR7630684 A FR 7630684A FR 2367387 A1 FR2367387 A1 FR 2367387A1
Authority
FR
France
Prior art keywords
digital transmission
comparison
recovery circuit
transmission systems
recover
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.)
Granted
Application number
FR7630684A
Other languages
English (en)
Other versions
FR2367387B1 (fr
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to FR7630684A priority Critical patent/FR2367387A1/fr
Publication of FR2367387A1 publication Critical patent/FR2367387A1/fr
Application granted granted Critical
Publication of FR2367387B1 publication Critical patent/FR2367387B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/027—Speed or phase control by the received code signals, the signals containing no special synchronisation information extracting the synchronising or clock signal from the received signal spectrum, e.g. by using a resonant or bandpass circuit
    • 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • H04L27/2276—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using frequency multiplication or harmonic tracking

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

Dans un système de transmission numérique, on utilise pour récupérer la porteuse ou la fréquence rythme, une boucle de verrouillage de phase dans laquelle est prévu un comparateur de phase dont la première entrée reçoit un signal derivé du signal d'entrée. Pour la récupération de la porteuse, dans un système à n déplacements de phase, ledit signal dérivé est le signal reçu multiplié en fréquence par n et la seconde entrée du comparateur est reliée à la sortie d'un oscillateur commandable à ondes élastiques de surface dont l'entrée de commande est reliée à la sortie du comparateur, la porteuse étant obtenue par division par n de la sortie de l'oscillateur. Pour la fréquence rythme, le signal dérivé est centré sur la fréquence des transitions et l'oscillateur délivre la fréquence rythme.
FR7630684A 1976-10-07 1976-10-07 Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique Granted FR2367387A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7630684A FR2367387A1 (fr) 1976-10-07 1976-10-07 Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7630684A FR2367387A1 (fr) 1976-10-07 1976-10-07 Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique

Publications (2)

Publication Number Publication Date
FR2367387A1 true FR2367387A1 (fr) 1978-05-05
FR2367387B1 FR2367387B1 (fr) 1982-01-08

Family

ID=9178674

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7630684A Granted FR2367387A1 (fr) 1976-10-07 1976-10-07 Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique

Country Status (1)

Country Link
FR (1) FR2367387A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417888A1 (fr) * 1978-02-17 1979-09-14 Marconi Co Ltd Demodulateur pour signal a modulation de phase a plusieurs niveaux
EP0020236A1 (fr) * 1979-06-01 1980-12-10 Thomson-Csf Dispositif de synchronisation d'un signal d'horloge et démodulateur de phase différentielle comportant un tel dispositif
FR2502872A1 (fr) * 1981-03-27 1982-10-01 Laures Antoine Organe de recuperation de porteuse pour signal a modulations mdp2 ou mdp4

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818346A (en) * 1972-10-12 1974-06-18 J Fletcher Differential phase-shift-keyed signal resolver
FR2270736A1 (en) * 1974-05-10 1975-12-05 Blanc Andre Regeneration system for telephone carrier frequency - uses cct with local oscillator frequency divider and logic ccts
FR2293836A1 (fr) * 1974-06-27 1976-07-02 Raytheon Co Poste de transmission de donnees numeriques pour systemes de transmission en hyperfrequence de donnees, notamment entre ordinateurs

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818346A (en) * 1972-10-12 1974-06-18 J Fletcher Differential phase-shift-keyed signal resolver
FR2270736A1 (en) * 1974-05-10 1975-12-05 Blanc Andre Regeneration system for telephone carrier frequency - uses cct with local oscillator frequency divider and logic ccts
FR2293836A1 (fr) * 1974-06-27 1976-07-02 Raytheon Co Poste de transmission de donnees numeriques pour systemes de transmission en hyperfrequence de donnees, notamment entre ordinateurs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
ONDE ELECTRIQUE, volume 56, no. 4, avril 1976, PARIS, J. HENAFF: 'OSCILLATEURS A ONDES ACOUSTIQUES DE SURFACE', pages 189 à 196 *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2417888A1 (fr) * 1978-02-17 1979-09-14 Marconi Co Ltd Demodulateur pour signal a modulation de phase a plusieurs niveaux
EP0020236A1 (fr) * 1979-06-01 1980-12-10 Thomson-Csf Dispositif de synchronisation d'un signal d'horloge et démodulateur de phase différentielle comportant un tel dispositif
FR2458182A1 (fr) * 1979-06-01 1980-12-26 Thomson Csf Dispositif de synchronisation et demodulateurs de phase differentielle comportant un tel dispositif
FR2502872A1 (fr) * 1981-03-27 1982-10-01 Laures Antoine Organe de recuperation de porteuse pour signal a modulations mdp2 ou mdp4
DE3208480A1 (de) * 1981-03-27 1982-10-07 Léon Clayes-sous-Bois Horbacio Traegerfrequenzrueckgewinnungseinrichtung fuer modulationssignale mit 2- oder -4-stufiger phasenverschiebung
US4491805A (en) * 1981-03-27 1985-01-01 Antoine Laures BPSK And QPSK transmission systems having phase locked loop for regenerating the carrier wave

Also Published As

Publication number Publication date
FR2367387B1 (fr) 1982-01-08

Similar Documents

Publication Publication Date Title
GB1497301A (en) Phase comparison systems employing phaselock loop apparatus
ES487141A1 (es) Conexion digital de regulacion de fases con una conexion - auxiliar, especialmente para sintonizadores de aparatos de -television.
GB1492165A (en) Method and device for synchronizing the clock of a receiver in a data transmission system
GB1497859A (en) Data transmission systems
ES464023A1 (es) Perfeccionamientos en circuitos digitales con red de fase sincronizada.
FR2367387A1 (fr) Circuits de recuperation des frequences porteuses et rythmes dans des systemes de transmission numerique
US3472960A (en) Synchronizing system having locally generated signals and psk information signals
GB1103450A (en) Channel supervisory system
US4361897A (en) Circuit arrangement for clock pulse recovery at the receiving end of digital clock-controlled data transmission systems
ES363108A2 (es) Una disposicion para transmitir senales de informacion en una banda de frecuencias prescrita.
US3510597A (en) Frequency bandwidth compression and expansion system
GB1445733A (en) Underwater transmission system
GB1260976A (en) A receiver for the reception of pulses modulated on a carrier wave
SU439935A1 (ru) Устройство тактовой синхронизации шумоподобных сигналов
SU928660A1 (ru) Способ синхронизации генераторов
JPS5773545A (en) Phase synchronizing system
JPS6488274A (en) Gps receiver
GB1520290A (en) Phase acquisition
SU1525930A1 (ru) Устройство дл приема относительного биимпульсного сигнала
SU500570A1 (ru) Устройство дл преобразовани входного сигнала в системах синхронизации
GB1495203A (en) Phase locked loop circuits
GB924647A (en) An arrangement comprising apparatus for the sending and receiving of information by phase shift carrier transmission
FR2441174A1 (fr) Comparateur de phase et de frequence numerique
SU773946A1 (ru) Устройство синхронизации
SU819984A1 (ru) Демодул тор сигналов с двукратнойфАзОВОй МАНипул циЕй

Legal Events

Date Code Title Description
TP Transmission of property
TP Transmission of property