JPS5549059A - Carrier regenerating circuit - Google Patents

Carrier regenerating circuit

Info

Publication number
JPS5549059A
JPS5549059A JP12210978A JP12210978A JPS5549059A JP S5549059 A JPS5549059 A JP S5549059A JP 12210978 A JP12210978 A JP 12210978A JP 12210978 A JP12210978 A JP 12210978A JP S5549059 A JPS5549059 A JP S5549059A
Authority
JP
Japan
Prior art keywords
output
carrier
phase
received
regenerated
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
JP12210978A
Other languages
Japanese (ja)
Inventor
Hiroshi Kurihara
Tadayoshi Kato
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 JP12210978A priority Critical patent/JPS5549059A/en
Publication of JPS5549059A publication Critical patent/JPS5549059A/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
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • H04L27/2277—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using remodulation

Landscapes

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

Abstract

PURPOSE:To make it possible to obtain a stable carrier by operating a phase demodulator without reference to an input PSK signal level by putting the phase modulator into operation by the output of demodulation of a received modulation wave by a regenerated carrier. CONSTITUTION:An output from oscillator 22 is branched into two; one output is supplied to phase modulator 23, whose output is used for frequency conversion 21 of a received phase-modulated signal, and its output is passed through BPF 24 and then frequency-converted 25 by the other output of oscillator 22, thereby regenerating a carrier of a received modulated wave. This regenerated carrier is used to demodulate 26 the received modulated wave and then, phase modulator 23 is modulated by its output. Consequently, a stable carrier with less phase skipping can be regenerated.
JP12210978A 1978-10-05 1978-10-05 Carrier regenerating circuit Pending JPS5549059A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12210978A JPS5549059A (en) 1978-10-05 1978-10-05 Carrier regenerating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12210978A JPS5549059A (en) 1978-10-05 1978-10-05 Carrier regenerating circuit

Publications (1)

Publication Number Publication Date
JPS5549059A true JPS5549059A (en) 1980-04-08

Family

ID=14827854

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12210978A Pending JPS5549059A (en) 1978-10-05 1978-10-05 Carrier regenerating circuit

Country Status (1)

Country Link
JP (1) JPS5549059A (en)

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