JPS5672548A - Space diversity receiving system - Google Patents

Space diversity receiving system

Info

Publication number
JPS5672548A
JPS5672548A JP14886779A JP14886779A JPS5672548A JP S5672548 A JPS5672548 A JP S5672548A JP 14886779 A JP14886779 A JP 14886779A JP 14886779 A JP14886779 A JP 14886779A JP S5672548 A JPS5672548 A JP S5672548A
Authority
JP
Japan
Prior art keywords
deviation
band
signal
compounding
signals
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
JP14886779A
Other languages
Japanese (ja)
Other versions
JPS6119188B2 (en
Inventor
Shozo Komaki
Shigeharu Okamoto
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 JP14886779A priority Critical patent/JPS5672548A/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 JPS5672548A publication Critical patent/JPS5672548A/en
Priority to US06/365,345 priority patent/US4710975A/en
Publication of JPS6119188B2 publication Critical patent/JPS6119188B2/ja
Granted 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 compound the interference wave components contained in the signals so that they can be antiphase to each other, and flatten the frequency characteristic, by compounding the signals received by 2 sets of antennas so that the in-band deviation can be reduced. CONSTITUTION:The signals e1 and e2 received by 2 sets of antennas 1, 4 are made to pass through the phase modulator 2 and the phase shifter 5, respctively, and after that, they are compounded by the compounding device 3, and are converted to the IF signal having a constant signal level by the receiver 6. This IF signal is provided to the band characteristic detection circuit 8, the amplitude after compounding or the delay frequency characteristic is observed, and the necessary in-band amplitude or the delay deviation is detected. This in-band deviation signal is provided to the control circuit 9, the phase shifter 5 is controlled, and the deviation is reduced.
JP14886779A 1979-02-13 1979-11-19 Space diversity receiving system Granted JPS5672548A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
JP14886779A JPS5672548A (en) 1979-11-19 1979-11-19 Space diversity receiving system
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
JP14886779A JPS5672548A (en) 1979-11-19 1979-11-19 Space diversity receiving system

Publications (2)

Publication Number Publication Date
JPS5672548A true JPS5672548A (en) 1981-06-16
JPS6119188B2 JPS6119188B2 (en) 1986-05-16

Family

ID=15462500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14886779A Granted JPS5672548A (en) 1979-02-13 1979-11-19 Space diversity receiving system

Country Status (1)

Country Link
JP (1) JPS5672548A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549185A (en) * 1981-11-03 1985-10-22 Amstar Technical Products Co., Inc. Signal distribution system
JPS61131625A (en) * 1984-11-29 1986-06-19 Nec Corp Space diversity reception system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4549185A (en) * 1981-11-03 1985-10-22 Amstar Technical Products Co., Inc. Signal distribution system
JPS61131625A (en) * 1984-11-29 1986-06-19 Nec Corp Space diversity reception system

Also Published As

Publication number Publication date
JPS6119188B2 (en) 1986-05-16

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