JPS55110458A - Phase slip detector - Google Patents

Phase slip detector

Info

Publication number
JPS55110458A
JPS55110458A JP1729079A JP1729079A JPS55110458A JP S55110458 A JPS55110458 A JP S55110458A JP 1729079 A JP1729079 A JP 1729079A JP 1729079 A JP1729079 A JP 1729079A JP S55110458 A JPS55110458 A JP S55110458A
Authority
JP
Japan
Prior art keywords
output
circuit
phase slip
phase
filter
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
JP1729079A
Other languages
Japanese (ja)
Other versions
JPS5851464B2 (en
Inventor
Toshio Mizuno
Takuo Muratani
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP54017290A priority Critical patent/JPS5851464B2/en
Priority to US06/115,534 priority patent/US4328587A/en
Priority to DE3003757A priority patent/DE3003757C2/en
Priority to GB8005134A priority patent/GB2045581B/en
Publication of JPS55110458A publication Critical patent/JPS55110458A/en
Publication of JPS5851464B2 publication Critical patent/JPS5851464B2/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
    • H04L27/2271—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
    • 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)
  • Facsimile Image Signal Circuits (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

PURPOSE:To make easy the removal of burst error, by detecting instantaneous frequency of carrier received, integrating the output with integrator, and judging the production of phase slip when the output level of integrator exceeds the threshold value. CONSTITUTION:The carrier of the signal received is picked up at the carrier component pick up circuit 6 and the instantaneous frequency of the input signal vt is detected with the frequency detector 2, to obtain the differentiated waveform of the phase. The output feeding and detecting the output of the detector 2 to the filter 3 is integrated, the signal integrated with the filter 3 is added to the threshold value circuit 4, to discriminate whether the polarity of the pulse appeared at the output of the filter 3 is positive or negative phase slip. The pulse waveform outputted is shaped and the phase slip due to noise is accurately detected with a simple constitution. Thus, the phase slip can be rejected at the phase shift circuit 8 inputting the output of the circuit 6 delayed at the delay circuit 7.
JP54017290A 1979-02-19 1979-02-19 Phase slip detection device Expired JPS5851464B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP54017290A JPS5851464B2 (en) 1979-02-19 1979-02-19 Phase slip detection device
US06/115,534 US4328587A (en) 1979-02-19 1980-01-25 Phase slip detector and systems employing the detector
DE3003757A DE3003757C2 (en) 1979-02-19 1980-02-01 Phase slip detector with a device for receiving a digital PSK wave
GB8005134A GB2045581B (en) 1979-02-19 1980-02-15 Phase slip detector and systems employing the detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54017290A JPS5851464B2 (en) 1979-02-19 1979-02-19 Phase slip detection device

Publications (2)

Publication Number Publication Date
JPS55110458A true JPS55110458A (en) 1980-08-25
JPS5851464B2 JPS5851464B2 (en) 1983-11-16

Family

ID=11939850

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54017290A Expired JPS5851464B2 (en) 1979-02-19 1979-02-19 Phase slip detection device

Country Status (1)

Country Link
JP (1) JPS5851464B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012132103A1 (en) * 2011-03-25 2012-10-04 日本電気株式会社 Phase-compensation receiver

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012132103A1 (en) * 2011-03-25 2012-10-04 日本電気株式会社 Phase-compensation receiver
JP5234228B2 (en) * 2011-03-25 2013-07-10 日本電気株式会社 Phase compensation receiver
US9184905B2 (en) 2011-03-25 2015-11-10 Nec Corporation Phase compensation receiver

Also Published As

Publication number Publication date
JPS5851464B2 (en) 1983-11-16

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