CA2041735A1 - Antenna selecting diversity receiving apparatus - Google Patents

Antenna selecting diversity receiving apparatus

Info

Publication number
CA2041735A1
CA2041735A1 CA2041735A CA2041735A CA2041735A1 CA 2041735 A1 CA2041735 A1 CA 2041735A1 CA 2041735 A CA2041735 A CA 2041735A CA 2041735 A CA2041735 A CA 2041735A CA 2041735 A1 CA2041735 A1 CA 2041735A1
Authority
CA
Canada
Prior art keywords
time
antenna
diversity receiving
radio receiver
antenna selecting
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
CA2041735A
Other languages
French (fr)
Other versions
CA2041735C (en
Inventor
Akira Andoh
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of CA2041735A1 publication Critical patent/CA2041735A1/en
Application granted granted Critical
Publication of CA2041735C publication Critical patent/CA2041735C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04B7/0805—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 single receiver and antenna switching
    • H04B7/0808—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 single receiver and antenna switching comparing all antennas before reception

Abstract

An antenna selecting diversity receiving appara-tus according to the present invention utilizes the linear modulation with information about the envelope of a modulating wave included therein and is employed in a radio communication system using a TDM. An in-tegrating circuit serves to integrate electric-field levels received by respective antennas over a predetermined period of time before a start in a time slot allotted to a radio receiver. Then, a comparing circuit makes a comparison among respective time-integrated values corresponding to the respective antennas. In addition, a changeover control circuit serves to select an antenna corresponding to the maxi-mum time-integrated value as the antenna used during the period of the time slot allotted to the radio receiver.
CA002041735A 1990-08-01 1991-05-02 Antenna selecting diversity receiving apparatus Expired - Fee Related CA2041735C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP204457/90 1990-08-01
JP2204457A JPH0787445B2 (en) 1990-08-01 1990-08-01 Antenna selection diversity receiver

Publications (2)

Publication Number Publication Date
CA2041735A1 true CA2041735A1 (en) 1992-02-02
CA2041735C CA2041735C (en) 1996-12-10

Family

ID=16490855

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002041735A Expired - Fee Related CA2041735C (en) 1990-08-01 1991-05-02 Antenna selecting diversity receiving apparatus

Country Status (4)

Country Link
US (1) US5241701A (en)
JP (1) JPH0787445B2 (en)
CA (1) CA2041735C (en)
GB (1) GB2246686B (en)

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CA2041735C (en) 1996-12-10
GB2246686B (en) 1994-10-26

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