JPS5546610A - Circuit connection system of ssra communication system - Google Patents

Circuit connection system of ssra communication system

Info

Publication number
JPS5546610A
JPS5546610A JP11911378A JP11911378A JPS5546610A JP S5546610 A JPS5546610 A JP S5546610A JP 11911378 A JP11911378 A JP 11911378A JP 11911378 A JP11911378 A JP 11911378A JP S5546610 A JPS5546610 A JP S5546610A
Authority
JP
Japan
Prior art keywords
frequency
ssra
signal
code
phase
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
JP11911378A
Other languages
Japanese (ja)
Other versions
JPS581582B2 (en
Inventor
Mitsuo Yokoyama
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.)
RADIO RES LAB
YUSEISHO DENPA KENKYUSHO
Original Assignee
RADIO RES LAB
YUSEISHO DENPA KENKYUSHO
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 RADIO RES LAB, YUSEISHO DENPA KENKYUSHO filed Critical RADIO RES LAB
Priority to JP53119113A priority Critical patent/JPS581582B2/en
Publication of JPS5546610A publication Critical patent/JPS5546610A/en
Publication of JPS581582B2 publication Critical patent/JPS581582B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems

Landscapes

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

Abstract

PURPOSE:To make it possible to set up a completely-random communication circuit in a short time by increasing number assignment and by realizing the shortening of an initial connection by the frequency of a multi-frequency signal and phase information, by obtaining the logical product of a PN (false) code and the multi-frequency signal. CONSTITUTION:A transmission side consists of SSRA transmission part 1 which generates a SSRA (spread spectrum random access) signal, synthesizer 2 which generates frequencies (f1) and (f2), switch 5 alternates between the both, adder 7 which mixes the SSRA signal with a signal of frequency (f1) or (f2), and antenna 8. Here, a PN code is taken as a number, and the combination between (f1) and (f2) as an office number; and the phase of a two-frequency signal or a frequency change point is superposed upon the SSRA signal synchronizing with frames of the PN code, thereby sending them out. A reception side, on the other hand, receives the multi-frequency signal to detect its own office number and then attain frequency synchronization to detect a PN frame position from the frequency or phase change point, so that the synchronization of a SSRA circuit can be established in a short time the information.
JP53119113A 1978-09-29 1978-09-29 Line connection method in SSRA communication method Expired JPS581582B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53119113A JPS581582B2 (en) 1978-09-29 1978-09-29 Line connection method in SSRA communication method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53119113A JPS581582B2 (en) 1978-09-29 1978-09-29 Line connection method in SSRA communication method

Publications (2)

Publication Number Publication Date
JPS5546610A true JPS5546610A (en) 1980-04-01
JPS581582B2 JPS581582B2 (en) 1983-01-12

Family

ID=14753232

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53119113A Expired JPS581582B2 (en) 1978-09-29 1978-09-29 Line connection method in SSRA communication method

Country Status (1)

Country Link
JP (1) JPS581582B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61227338A (en) * 1985-04-02 1986-10-09 川崎重工業株式会社 Relay contact compensation circuit
JPS62252234A (en) * 1986-04-25 1987-11-04 General Res Obu Erekutoronitsukusu:Kk Radio signal receiving system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6120362U (en) * 1984-07-11 1986-02-05 株式会社 ウスイ包装 slip
JPS6414093A (en) * 1987-07-08 1989-01-18 Fuji Photo Film Co Ltd Preparation of card illustrated with photograph

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61227338A (en) * 1985-04-02 1986-10-09 川崎重工業株式会社 Relay contact compensation circuit
JPH0511378B2 (en) * 1985-04-02 1993-02-15 Kawasaki Heavy Ind Ltd
JPS62252234A (en) * 1986-04-25 1987-11-04 General Res Obu Erekutoronitsukusu:Kk Radio signal receiving system

Also Published As

Publication number Publication date
JPS581582B2 (en) 1983-01-12

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