JPS5351903A - Radio communication system - Google Patents

Radio communication system

Info

Publication number
JPS5351903A
JPS5351903A JP12673476A JP12673476A JPS5351903A JP S5351903 A JPS5351903 A JP S5351903A JP 12673476 A JP12673476 A JP 12673476A JP 12673476 A JP12673476 A JP 12673476A JP S5351903 A JPS5351903 A JP S5351903A
Authority
JP
Japan
Prior art keywords
communication system
radio communication
electric field
input electric
intelligibility
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
JP12673476A
Other languages
Japanese (ja)
Inventor
Katsuhiro Shiomi
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 JP12673476A priority Critical patent/JPS5351903A/en
Publication of JPS5351903A publication Critical patent/JPS5351903A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)

Abstract

PURPOSE:To improve the S/N ratio at low input electric field and to increase the intelligibility, by controlling the frequency inversion privacy call depending on the input electric field.
JP12673476A 1976-10-21 1976-10-21 Radio communication system Pending JPS5351903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12673476A JPS5351903A (en) 1976-10-21 1976-10-21 Radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12673476A JPS5351903A (en) 1976-10-21 1976-10-21 Radio communication system

Publications (1)

Publication Number Publication Date
JPS5351903A true JPS5351903A (en) 1978-05-11

Family

ID=14942556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12673476A Pending JPS5351903A (en) 1976-10-21 1976-10-21 Radio communication system

Country Status (1)

Country Link
JP (1) JPS5351903A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04288738A (en) * 1991-03-18 1992-10-13 Tamura Electric Works Ltd Privacy telephone system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04288738A (en) * 1991-03-18 1992-10-13 Tamura Electric Works Ltd Privacy telephone system

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