JPS5530232A - Demodulator on n-phase phase shift keying system - Google Patents

Demodulator on n-phase phase shift keying system

Info

Publication number
JPS5530232A
JPS5530232A JP10311978A JP10311978A JPS5530232A JP S5530232 A JPS5530232 A JP S5530232A JP 10311978 A JP10311978 A JP 10311978A JP 10311978 A JP10311978 A JP 10311978A JP S5530232 A JPS5530232 A JP S5530232A
Authority
JP
Japan
Prior art keywords
circuit
carrier
phase
discriminative
clocks
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
JP10311978A
Other languages
Japanese (ja)
Inventor
Masaharu Miura
Akira Okano
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10311978A priority Critical patent/JPS5530232A/en
Publication of JPS5530232A publication Critical patent/JPS5530232A/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

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 decrease a code error rate by performing the clok-by-clock discriminative regeneration of a N-phase PSK modulated carrier by using its clocks and then by selecting either ''1'' or ''0'' appearing to be definite by a majority decision circuit. CONSTITUTION:A carrier clock signal, generated from a carrier by carrier clock signal generating circuit 10, is inputted to discriminative regenerating circuit 11. A two-phase PSK modulated carrier, on the other hand, is also inputted to circuit 11, where it is converted direct into a digital signal; on the basis of clocks of timing clock generating circuit 15, series-parallel converter circuit 12 converts it into the (m)-number parallel NRZ digital signals and majority-dicision logic circuit 13 decides on ''1'' (or ''0'') and outputs it. Consequently, the (m)-number values are extracted from the same time width and their majority decision is made, so that they can be extracted more accurately than conventional extraction of one value.
JP10311978A 1978-08-24 1978-08-24 Demodulator on n-phase phase shift keying system Pending JPS5530232A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10311978A JPS5530232A (en) 1978-08-24 1978-08-24 Demodulator on n-phase phase shift keying system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10311978A JPS5530232A (en) 1978-08-24 1978-08-24 Demodulator on n-phase phase shift keying system

Publications (1)

Publication Number Publication Date
JPS5530232A true JPS5530232A (en) 1980-03-04

Family

ID=14345688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10311978A Pending JPS5530232A (en) 1978-08-24 1978-08-24 Demodulator on n-phase phase shift keying system

Country Status (1)

Country Link
JP (1) JPS5530232A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4825252A (en) * 1987-06-12 1989-04-25 Asahi Kogaku Kogyo Kabushiki Kaisha Color zoom copying apparatus
US5117253A (en) * 1987-05-30 1992-05-26 Asahi Kogaku Kogyo Kabushiki Kaisha Color separating device in color copying machine
US6765972B1 (en) 1999-07-30 2004-07-20 Fujitsu Limited Carrier synchronization type demodulator for PSK signal

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5117253A (en) * 1987-05-30 1992-05-26 Asahi Kogaku Kogyo Kabushiki Kaisha Color separating device in color copying machine
US4825252A (en) * 1987-06-12 1989-04-25 Asahi Kogaku Kogyo Kabushiki Kaisha Color zoom copying apparatus
US6765972B1 (en) 1999-07-30 2004-07-20 Fujitsu Limited Carrier synchronization type demodulator for PSK signal

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