FR1532850A - Improved communications system - Google Patents

Improved communications system

Info

Publication number
FR1532850A
FR1532850A FR115806A FR115806A FR1532850A FR 1532850 A FR1532850 A FR 1532850A FR 115806 A FR115806 A FR 115806A FR 115806 A FR115806 A FR 115806A FR 1532850 A FR1532850 A FR 1532850A
Authority
FR
France
Prior art keywords
communications system
improved communications
improved
communications
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
Application number
FR115806A
Other languages
French (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.)
Northrop Grumman Space and Mission Systems Corp
Original Assignee
TRW Inc
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 TRW Inc filed Critical TRW Inc
Priority to FR115806A priority Critical patent/FR1532850A/en
Application granted granted Critical
Publication of FR1532850A publication Critical patent/FR1532850A/en
Expired 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
    • H04L27/227—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
    • 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
    • H04L27/2053—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases
    • H04L27/2057—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using more than one carrier, e.g. carriers with different phases with a separate carrier for each phase state

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
FR115806A 1966-07-27 1967-07-26 Improved communications system Expired FR1532850A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR115806A FR1532850A (en) 1966-07-27 1967-07-26 Improved communications system

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US56820966A 1966-07-27 1966-07-27
FR115806A FR1532850A (en) 1966-07-27 1967-07-26 Improved communications system

Publications (1)

Publication Number Publication Date
FR1532850A true FR1532850A (en) 1968-07-12

Family

ID=26178422

Family Applications (1)

Application Number Title Priority Date Filing Date
FR115806A Expired FR1532850A (en) 1966-07-27 1967-07-26 Improved communications system

Country Status (1)

Country Link
FR (1) FR1532850A (en)

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