JPS5534502A - Fixed station's transmission device for communication with moving object - Google Patents

Fixed station's transmission device for communication with moving object

Info

Publication number
JPS5534502A
JPS5534502A JP10619278A JP10619278A JPS5534502A JP S5534502 A JPS5534502 A JP S5534502A JP 10619278 A JP10619278 A JP 10619278A JP 10619278 A JP10619278 A JP 10619278A JP S5534502 A JPS5534502 A JP S5534502A
Authority
JP
Japan
Prior art keywords
unit
oscillator
transmitters
reference frequency
5khz
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
JP10619278A
Other languages
Japanese (ja)
Other versions
JPS5921232B2 (en
Inventor
Katsumi Ushiyama
Hideo Kobayashi
Katsutoshi Kawai
Takao Kiogawa
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.)
Kokusai Denki Electric Inc
Original Assignee
Kokusai 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 Kokusai Electric Co Ltd filed Critical Kokusai Electric Co Ltd
Priority to JP53106192A priority Critical patent/JPS5921232B2/en
Publication of JPS5534502A publication Critical patent/JPS5534502A/en
Publication of JPS5921232B2 publication Critical patent/JPS5921232B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Landscapes

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

Abstract

PURPOSE:To realize an economical control system for the link line and the transmission frequency in order to constitute the complicated service area by installing in dispersion a number of minor power radio transmitters to secure the communication to the mobile object containing a simple antenna and portable receiver. CONSTITUTION:At the central station, the aural signal of channel CH1 is supplied to operation unit 6 and then sent to connection terminal unit 7's unit 10 to undergo the amplitude modulation. And the signals sent from CH1 and the signals from CH2 feature 100 and 108KHz each through the f-division multiplication of the 8KHz interval to be transmitted to dispersed transmitters 8 via common cable L. The output of reference frequency generator (crystal oscillator for fs with 5KHz) 9 within unit 6 controls the secondary reference frequency oscillator (secondary reference frequency oscillator for fs' with about 5KHz) 19 within unit 7. The BPF performs PM and amplification after detection with the carrier use purpose within transmitters 8 installed in dispersion. BPF27 is for the fs use and controls carrier frequency oscillator LO via PLL. As a result, both the link line and the oscillator can be rationalized.
JP53106192A 1978-09-01 1978-09-01 Fixed station transmitter for communication with mobile objects Expired JPS5921232B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53106192A JPS5921232B2 (en) 1978-09-01 1978-09-01 Fixed station transmitter for communication with mobile objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53106192A JPS5921232B2 (en) 1978-09-01 1978-09-01 Fixed station transmitter for communication with mobile objects

Publications (2)

Publication Number Publication Date
JPS5534502A true JPS5534502A (en) 1980-03-11
JPS5921232B2 JPS5921232B2 (en) 1984-05-18

Family

ID=14427316

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53106192A Expired JPS5921232B2 (en) 1978-09-01 1978-09-01 Fixed station transmitter for communication with mobile objects

Country Status (1)

Country Link
JP (1) JPS5921232B2 (en)

Also Published As

Publication number Publication date
JPS5921232B2 (en) 1984-05-18

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