JPS55107347A - Space diversity reception system - Google Patents

Space diversity reception system

Info

Publication number
JPS55107347A
JPS55107347A JP1435979A JP1435979A JPS55107347A JP S55107347 A JPS55107347 A JP S55107347A JP 1435979 A JP1435979 A JP 1435979A JP 1435979 A JP1435979 A JP 1435979A JP S55107347 A JPS55107347 A JP S55107347A
Authority
JP
Japan
Prior art keywords
frequency
band
cancel
antennas
polarity
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
JP1435979A
Other languages
Japanese (ja)
Other versions
JPS6021493B2 (en
Inventor
Shigeharu Okamoto
Shozo Komaki
Izumi Horikawa
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 JP54014359A priority Critical patent/JPS6021493B2/en
Priority to US06/113,591 priority patent/US4326294A/en
Priority to CA344,382A priority patent/CA1128134A/en
Priority to GB8003122A priority patent/GB2042307B/en
Priority to DE3003820A priority patent/DE3003820C2/en
Priority to IT67209/80A priority patent/IT1128754B/en
Priority to FR8003180A priority patent/FR2449372B1/en
Publication of JPS55107347A publication Critical patent/JPS55107347A/en
Priority to US06/365,345 priority patent/US4710975A/en
Publication of JPS6021493B2 publication Critical patent/JPS6021493B2/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
    • H04B7/0837—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 pre-detection combining
    • H04B7/084—Equal gain combining, only phase adjustments

Landscapes

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

Abstract

PURPOSE:To cancel the interference waves, by picking up the amplitude variation of synthesized signal with a plurality of frequencies, and determining the control direction from the magnitude of phase difference between antennas of each frequency based on it and the polarity of the level deviation in the band. CONSTITUTION:The amplitude variation of synthesized signal is fed to the band filters 12a-12c to pickup the frequency level of three points. The magnitude of the phase difference between the antennas 1 and 4 at each frequency according to the value picked up and the polarity of the level deviation in the band perform sampling at the sampling circuits 15a-15c, and the amplitude information corresponding to each frequency is fed to the processing circuit 20, where the determination of the drive direction of the phase shifter 5 required to cancel the interference waves in opposite phase state is made. Accordingly, the phase shifter 5 is set to optimum value at the drive circuit 10.
JP54014359A 1979-02-13 1979-02-13 Space diversity reception method Expired JPS6021493B2 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP54014359A JPS6021493B2 (en) 1979-02-13 1979-02-13 Space diversity reception method
US06/113,591 US4326294A (en) 1979-02-13 1980-01-21 Space diversity reception system having compensation means of multipath effect
CA344,382A CA1128134A (en) 1979-02-13 1980-01-25 Space diversity reception system having compensation means of multipath effect
GB8003122A GB2042307B (en) 1979-02-13 1980-01-30 Multipath radio reception system
DE3003820A DE3003820C2 (en) 1979-02-13 1980-02-02 Space diversity receiving device
IT67209/80A IT1128754B (en) 1979-02-13 1980-02-12 SPACE DIVERSITY RECEIVER SYSTEM FOR RADIO SIGNALS
FR8003180A FR2449372B1 (en) 1979-02-13 1980-02-13 SPACE DIVERSITY RADIO TRANSMISSION SYSTEM WITH MULTI-PATH COMPENSATION MEANS
US06/365,345 US4710975A (en) 1979-02-13 1982-04-05 Space diversity reception system having compensation means of multipath effect

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54014359A JPS6021493B2 (en) 1979-02-13 1979-02-13 Space diversity reception method

Publications (2)

Publication Number Publication Date
JPS55107347A true JPS55107347A (en) 1980-08-18
JPS6021493B2 JPS6021493B2 (en) 1985-05-28

Family

ID=11858864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54014359A Expired JPS6021493B2 (en) 1979-02-13 1979-02-13 Space diversity reception method

Country Status (1)

Country Link
JP (1) JPS6021493B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56500871A (en) * 1979-07-16 1981-06-25
JPS59117833A (en) * 1982-12-24 1984-07-07 Fujitsu Ltd Alarm circuit for space diversity receiver
JPS59230334A (en) * 1983-06-13 1984-12-24 Fujitsu Ltd Space diversity reception system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0438944U (en) * 1990-07-25 1992-04-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56500871A (en) * 1979-07-16 1981-06-25
JPS59117833A (en) * 1982-12-24 1984-07-07 Fujitsu Ltd Alarm circuit for space diversity receiver
JPS59230334A (en) * 1983-06-13 1984-12-24 Fujitsu Ltd Space diversity reception system
JPH0421377B2 (en) * 1983-06-13 1992-04-09 Fujitsu Ltd

Also Published As

Publication number Publication date
JPS6021493B2 (en) 1985-05-28

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