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FR2422286A1 - Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines - Google Patents

Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines

Info

Publication number
FR2422286A1
FR2422286A1 FR7810191A FR7810191A FR2422286A1 FR 2422286 A1 FR2422286 A1 FR 2422286A1 FR 7810191 A FR7810191 A FR 7810191A FR 7810191 A FR7810191 A FR 7810191A FR 2422286 A1 FR2422286 A1 FR 2422286A1
Authority
FR
France
Prior art keywords
pages
storing
lines
differential phase
phase difference
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
FR7810191A
Other languages
French (fr)
Other versions
FR2422286B1 (en
Inventor
Jean-Pierre Houdard
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Priority to FR7810191A priority Critical patent/FR2422286A1/en
Publication of FR2422286A1 publication Critical patent/FR2422286A1/en
Application granted granted Critical
Publication of FR2422286B1 publication Critical patent/FR2422286B1/fr
Granted 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
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
    • H04L27/2092—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner with digital generation of the modulated carrier (does not include the modulation of a digitally generated carrier)

Landscapes

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

Abstract

L'invention concerne un dispositif de modulation pour la transmission de signaux modulés en phase différentielle. Ce dispositif permet de substituer à un signal de modulation formé de mots de K éléments binaires codés en binaire naturel, un signal modulé en phase différentielle formé de suites d'échantillons numériques sinusoïdaux de phase initiale j. 2 pi /2**K (j étant un nombre entier variable entre 0 et 2** K - 1). Il comporte une mémoire d'échantillons 1 pour fournir le signal modulé en phase différentielle, contenant 2**K suites d'échantillons numériques sinusoïdaux et un circuit d'adressage 2 de la mémoire d'échantillons comportant un circuit de sélection de page à accumulateur 3 commandé par le signal de modulation. Application aux systèmes de transmission de signaux modulés en phase différentielle.The invention relates to a modulation device for transmitting signals modulated in differential phase. This device makes it possible to replace a modulation signal formed of words of K binary elements coded in natural binary with a differential phase modulated signal formed of series of sinusoidal digital samples of initial phase j. 2 pi / 2 ** K (j being an integer variable between 0 and 2 ** K - 1). It has a sample memory 1 to provide the differential phase modulated signal, containing 2 ** K sinusoidal digital sample suites and a sample memory addressing circuit 2 including an accumulator page selection circuit 3 controlled by the modulation signal. Application to systems for transmitting signals modulated in differential phase.

FR7810191A 1978-04-06 1978-04-06 Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines Granted FR2422286A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7810191A FR2422286A1 (en) 1978-04-06 1978-04-06 Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7810191A FR2422286A1 (en) 1978-04-06 1978-04-06 Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines

Publications (2)

Publication Number Publication Date
FR2422286A1 true FR2422286A1 (en) 1979-11-02
FR2422286B1 FR2422286B1 (en) 1981-06-26

Family

ID=9206761

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7810191A Granted FR2422286A1 (en) 1978-04-06 1978-04-06 Transmission system for phase difference modulated signals - sends binary words by storing as pages having given number of lines

Country Status (1)

Country Link
FR (1) FR2422286A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982905A1 (en) * 1998-08-28 2000-03-01 Sony International (Europe) GmbH Universal PSK modulation apparatus and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935386A (en) * 1974-09-20 1976-01-27 Teletype Corporation Apparatus for synthesizing phase-modulated carrier wave
FR2322492A1 (en) * 1975-08-29 1977-03-25 Cit Alcatel DIGITAL DEVICE FOR GENERATING A PHASE MODULATED WAVE BY A FILTERED DATA SIGNAL

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935386A (en) * 1974-09-20 1976-01-27 Teletype Corporation Apparatus for synthesizing phase-modulated carrier wave
FR2322492A1 (en) * 1975-08-29 1977-03-25 Cit Alcatel DIGITAL DEVICE FOR GENERATING A PHASE MODULATED WAVE BY A FILTERED DATA SIGNAL

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
NV700/75 *
NV8038/78 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0982905A1 (en) * 1998-08-28 2000-03-01 Sony International (Europe) GmbH Universal PSK modulation apparatus and method

Also Published As

Publication number Publication date
FR2422286B1 (en) 1981-06-26

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Legal Events

Date Code Title Description
ST Notification of lapse