JPS5469311A - Supervisory unit for error ratio of n-phase psk digital modulation system - Google Patents

Supervisory unit for error ratio of n-phase psk digital modulation system

Info

Publication number
JPS5469311A
JPS5469311A JP13684077A JP13684077A JPS5469311A JP S5469311 A JPS5469311 A JP S5469311A JP 13684077 A JP13684077 A JP 13684077A JP 13684077 A JP13684077 A JP 13684077A JP S5469311 A JPS5469311 A JP S5469311A
Authority
JP
Japan
Prior art keywords
circuits
modulation system
digital modulation
phase psk
error ratio
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
JP13684077A
Other languages
Japanese (ja)
Inventor
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 JP13684077A priority Critical patent/JPS5469311A/en
Publication of JPS5469311A publication Critical patent/JPS5469311A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • H04L1/206—Arrangements for detecting or preventing errors in the information received using signal quality detector for modulated signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE:To reduce the scale of circuits and make apprication of IC easy by performing signal processing at the base band. CONSTITUTION:In this unit, n-phase PSK modulated waves are supplyed to amplitude set circuits 44 and 45 through phase detector 32 and amplitude set circuits 46 and 47 through phase detector 33. The product 50 of the sum 48 of outputs circuit 44 and 46 and the difference 49 of outputs of circuit 45 and 47 is found and both discriminaton and regeneration 51 are performed. In circuit 43, similar discrimination and regeneration are performed. By logical operation of each output of circuits 42 and 43, error supervising output, which is not influenced by noise, can be obtained.
JP13684077A 1977-11-15 1977-11-15 Supervisory unit for error ratio of n-phase psk digital modulation system Pending JPS5469311A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13684077A JPS5469311A (en) 1977-11-15 1977-11-15 Supervisory unit for error ratio of n-phase psk digital modulation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13684077A JPS5469311A (en) 1977-11-15 1977-11-15 Supervisory unit for error ratio of n-phase psk digital modulation system

Publications (1)

Publication Number Publication Date
JPS5469311A true JPS5469311A (en) 1979-06-04

Family

ID=15184723

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13684077A Pending JPS5469311A (en) 1977-11-15 1977-11-15 Supervisory unit for error ratio of n-phase psk digital modulation system

Country Status (1)

Country Link
JP (1) JPS5469311A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193658A (en) * 1983-04-18 1984-11-02 Nec Corp Pseudo error detecting circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59193658A (en) * 1983-04-18 1984-11-02 Nec Corp Pseudo error detecting circuit
JPH0588584B2 (en) * 1983-04-18 1993-12-22 Nippon Electric Co

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