JPS57184345A - Transmission controlling system for time-division multidirection multiplex radio communication system - Google Patents

Transmission controlling system for time-division multidirection multiplex radio communication system

Info

Publication number
JPS57184345A
JPS57184345A JP56037226A JP3722681A JPS57184345A JP S57184345 A JPS57184345 A JP S57184345A JP 56037226 A JP56037226 A JP 56037226A JP 3722681 A JP3722681 A JP 3722681A JP S57184345 A JPS57184345 A JP S57184345A
Authority
JP
Japan
Prior art keywords
signal
transmission
received
division
time
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
JP56037226A
Other languages
Japanese (ja)
Inventor
Kazuo Yagi
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi 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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP56037226A priority Critical patent/JPS57184345A/en
Publication of JPS57184345A publication Critical patent/JPS57184345A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To prevent the radio interference at the side of a master station, by discontinuing the transmission in case the synchronizing signal transmitted from the master station cannot be received at a slave station. CONSTITUTION:The electromagnetic wave f1 received through an antenna is demodulated by a demodulator DMD via a mixer MIX and an intermediate frequency amplifier IFA. A synchronizing signal S is eliminated by a dmeodulated output receiving logic circuit RLG and at the same time converted into a received signal RS. A synchronism detector SDT extracts the signal S and monitors the state of reception. When the reception of the signal S is impossible, the detector SDT extinguishes a monitoring output SUP and keeps a transmission switch TSW off to discontinue the transmission.
JP56037226A 1981-03-17 1981-03-17 Transmission controlling system for time-division multidirection multiplex radio communication system Pending JPS57184345A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56037226A JPS57184345A (en) 1981-03-17 1981-03-17 Transmission controlling system for time-division multidirection multiplex radio communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56037226A JPS57184345A (en) 1981-03-17 1981-03-17 Transmission controlling system for time-division multidirection multiplex radio communication system

Publications (1)

Publication Number Publication Date
JPS57184345A true JPS57184345A (en) 1982-11-13

Family

ID=12491676

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56037226A Pending JPS57184345A (en) 1981-03-17 1981-03-17 Transmission controlling system for time-division multidirection multiplex radio communication system

Country Status (1)

Country Link
JP (1) JPS57184345A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194532A (en) * 1988-01-29 1989-08-04 Nec Corp Radio communication equipment
JPH02241144A (en) * 1989-03-14 1990-09-25 Kokusai Denshin Denwa Co Ltd <Kdd> Radio transmitter in time division multiple access radio communication system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886414A (en) * 1972-02-17 1973-11-15
JPS5128401A (en) * 1974-09-04 1976-03-10 Tokyo Shibaura Electric Co JIBUNKATSUTAHOKOTSUSHINMONIOKERU KOKYOKUNOSOSHINJIKANSEIGYOSOCHI

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4886414A (en) * 1972-02-17 1973-11-15
JPS5128401A (en) * 1974-09-04 1976-03-10 Tokyo Shibaura Electric Co JIBUNKATSUTAHOKOTSUSHINMONIOKERU KOKYOKUNOSOSHINJIKANSEIGYOSOCHI

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01194532A (en) * 1988-01-29 1989-08-04 Nec Corp Radio communication equipment
JPH02241144A (en) * 1989-03-14 1990-09-25 Kokusai Denshin Denwa Co Ltd <Kdd> Radio transmitter in time division multiple access radio communication system

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