JPS5271912A - Carrier wave reproducing circuit - Google Patents

Carrier wave reproducing circuit

Info

Publication number
JPS5271912A
JPS5271912A JP50148192A JP14819275A JPS5271912A JP S5271912 A JPS5271912 A JP S5271912A JP 50148192 A JP50148192 A JP 50148192A JP 14819275 A JP14819275 A JP 14819275A JP S5271912 A JPS5271912 A JP S5271912A
Authority
JP
Japan
Prior art keywords
carrier wave
reproducing circuit
wave reproducing
phase
modulation
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.)
Pending
Application number
JP50148192A
Other languages
Japanese (ja)
Inventor
Kazuo Ogawa
Takayuki Ozaki
Hideki Nakamura
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.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP50148192A priority Critical patent/JPS5271912A/en
Publication of JPS5271912A publication Critical patent/JPS5271912A/en
Pending 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
    • H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
    • H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop

Landscapes

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

Abstract

PURPOSE:To produce a carrier wave having correct phase, by adjusting the phase of the carrier, which is used when the modulation wave in DC-AC partial response modulation system is demodulated, to a required phase against the modulation vector.
JP50148192A 1975-12-11 1975-12-11 Carrier wave reproducing circuit Pending JPS5271912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50148192A JPS5271912A (en) 1975-12-11 1975-12-11 Carrier wave reproducing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50148192A JPS5271912A (en) 1975-12-11 1975-12-11 Carrier wave reproducing circuit

Publications (1)

Publication Number Publication Date
JPS5271912A true JPS5271912A (en) 1977-06-15

Family

ID=15447300

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50148192A Pending JPS5271912A (en) 1975-12-11 1975-12-11 Carrier wave reproducing circuit

Country Status (1)

Country Link
JP (1) JPS5271912A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072241A2 (en) * 1981-08-10 1983-02-16 Fujitsu Limited Carrier recovery circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0072241A2 (en) * 1981-08-10 1983-02-16 Fujitsu Limited Carrier recovery circuit

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