JPS54141511A - Space diversity system - Google Patents

Space diversity system

Info

Publication number
JPS54141511A
JPS54141511A JP4941078A JP4941078A JPS54141511A JP S54141511 A JPS54141511 A JP S54141511A JP 4941078 A JP4941078 A JP 4941078A JP 4941078 A JP4941078 A JP 4941078A JP S54141511 A JPS54141511 A JP S54141511A
Authority
JP
Japan
Prior art keywords
station
transmission
vertical
reception
signal
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
JP4941078A
Other languages
Japanese (ja)
Inventor
Takuro Oguchi
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 JP4941078A priority Critical patent/JPS54141511A/en
Publication of JPS54141511A publication Critical patent/JPS54141511A/en
Pending 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
    • H04B7/10—Polarisation diversity; Directional diversity

Abstract

PURPOSE:To produce sufficient diversity effect by using the radio set of direct relay system, by respectively performing direct relaying for the transmission signals separately delivered as vertical and horizontal waves, and by synthesizing the two signals at the reception station. CONSTITUTION:At the transmission station (station A), the transmission signal from the transmitter 2 is fed to the transmission antennas 3 and 4 and the vertical and horizontal polarized signal f1V and f1H are delivered. Those signals are received with the reception antenna 5 at the relay station (station B), separate frequency shift is made at the direct relay unit 6 with the same shift frequency f s to produce the vertical and horizontal polarized wave signal f1V and f1H, and they are transmitted from the transmission antenna 7. At the reception station (station C), those signals are received with the reception antenna 8, and after converted into the base band signal with the receiver 9 and 10, they are syntherized and outputted with the synthesizer 11.
JP4941078A 1978-04-26 1978-04-26 Space diversity system Pending JPS54141511A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4941078A JPS54141511A (en) 1978-04-26 1978-04-26 Space diversity system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4941078A JPS54141511A (en) 1978-04-26 1978-04-26 Space diversity system

Publications (1)

Publication Number Publication Date
JPS54141511A true JPS54141511A (en) 1979-11-02

Family

ID=12830275

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4941078A Pending JPS54141511A (en) 1978-04-26 1978-04-26 Space diversity system

Country Status (1)

Country Link
JP (1) JPS54141511A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0284824A (en) * 1988-06-15 1990-03-26 Matsushita Electric Works Ltd Polarization diversity radio communication system

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093521A (en) * 1973-12-19 1975-07-25

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5093521A (en) * 1973-12-19 1975-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0284824A (en) * 1988-06-15 1990-03-26 Matsushita Electric Works Ltd Polarization diversity radio communication system

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