JPS55132143A - Diversity system - Google Patents

Diversity system

Info

Publication number
JPS55132143A
JPS55132143A JP3960979A JP3960979A JPS55132143A JP S55132143 A JPS55132143 A JP S55132143A JP 3960979 A JP3960979 A JP 3960979A JP 3960979 A JP3960979 A JP 3960979A JP S55132143 A JPS55132143 A JP S55132143A
Authority
JP
Japan
Prior art keywords
receiver
trouble
detector
output
terminal
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
JP3960979A
Other languages
Japanese (ja)
Other versions
JPS5822889B2 (en
Inventor
Tomihiko Kono
Ken Osaka
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP54039609A priority Critical patent/JPS5822889B2/en
Publication of JPS55132143A publication Critical patent/JPS55132143A/en
Publication of JPS5822889B2 publication Critical patent/JPS5822889B2/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
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0817—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection
    • H04B7/082—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with multiple receivers and antenna path selection selecting best antenna path

Landscapes

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

Abstract

PURPOSE:To make it possible to hold circuit quality more than a certain value even when inexpensive consitution is used and a receiver runs into trouble, by enabling a normal receiver to select an antenna corresponding to the receiver in trouble, by providing a circuit qaulity detector. CONSTITUTION:On detecting receiver 4a running into trouble, fault detector 10a sends its output to alternation switch driver 11a, the output of quality detector 7a is zero, and circuit quality comparator 8 connects together common terminal 5-1 and 5-3 of the alternation switch to terminal 5-3. Next, the transmission of the output of detector 10a to driver 11a makes driver 11a connect common terminal 2a-1 of alternation switch 2a to terminal 2a-3 (chain line), and consequently antenna 1a coresponding to receiver 4a in trouble can be connected to normal receiver 4b. At this time, when circuit quality 7b of receiver 4b is below the certain value, a received signal received by antenna 1a is supplied to receiver 4b.
JP54039609A 1979-04-02 1979-04-02 Diversity method Expired JPS5822889B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54039609A JPS5822889B2 (en) 1979-04-02 1979-04-02 Diversity method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54039609A JPS5822889B2 (en) 1979-04-02 1979-04-02 Diversity method

Publications (2)

Publication Number Publication Date
JPS55132143A true JPS55132143A (en) 1980-10-14
JPS5822889B2 JPS5822889B2 (en) 1983-05-12

Family

ID=12557845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54039609A Expired JPS5822889B2 (en) 1979-04-02 1979-04-02 Diversity method

Country Status (1)

Country Link
JP (1) JPS5822889B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63171069A (en) * 1987-01-09 1988-07-14 Hitachi Ltd High voltage control circuit

Also Published As

Publication number Publication date
JPS5822889B2 (en) 1983-05-12

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