JPS5669958A - Demodulator - Google Patents

Demodulator

Info

Publication number
JPS5669958A
JPS5669958A JP14667079A JP14667079A JPS5669958A JP S5669958 A JPS5669958 A JP S5669958A JP 14667079 A JP14667079 A JP 14667079A JP 14667079 A JP14667079 A JP 14667079A JP S5669958 A JPS5669958 A JP S5669958A
Authority
JP
Japan
Prior art keywords
demodulation
frequency
inputted
demodulator
synchronous detector
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
JP14667079A
Other languages
Japanese (ja)
Other versions
JPS6316939B2 (en
Inventor
Fumio Akashi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14667079A priority Critical patent/JPS5669958A/en
Publication of JPS5669958A publication Critical patent/JPS5669958A/en
Publication of JPS6316939B2 publication Critical patent/JPS6316939B2/ja
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
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation

Abstract

PURPOSE:To enable processing after demodulation by one sequence of signal processing by varying a demodulation frequency for demodulation as to offset cross amplitude modulation. CONSTITUTION:A received signal inputted from terminal 1 is inputted to synchronous detector 2. This synchronous detector 2 provides detection by a sine wave from oscillator 3 of a frequency shifting from a carrier frequency by 1/2T. Thus, the demodulator can be simplified. Here, T represents one signal interval.
JP14667079A 1979-11-13 1979-11-13 Demodulator Granted JPS5669958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14667079A JPS5669958A (en) 1979-11-13 1979-11-13 Demodulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14667079A JPS5669958A (en) 1979-11-13 1979-11-13 Demodulator

Publications (2)

Publication Number Publication Date
JPS5669958A true JPS5669958A (en) 1981-06-11
JPS6316939B2 JPS6316939B2 (en) 1988-04-12

Family

ID=15412947

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14667079A Granted JPS5669958A (en) 1979-11-13 1979-11-13 Demodulator

Country Status (1)

Country Link
JP (1) JPS5669958A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109626A (en) * 1986-10-20 1988-05-14 アメリカン　テレフォン　アンド　テレグラフ　カンパニー Digital communication system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109626A (en) * 1986-10-20 1988-05-14 アメリカン　テレフォン　アンド　テレグラフ　カンパニー Digital communication system

Also Published As

Publication number Publication date
JPS6316939B2 (en) 1988-04-12

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