JPS5577247A - Diversity transmitter-receiver - Google Patents

Diversity transmitter-receiver

Info

Publication number
JPS5577247A
JPS5577247A JP14993678A JP14993678A JPS5577247A JP S5577247 A JPS5577247 A JP S5577247A JP 14993678 A JP14993678 A JP 14993678A JP 14993678 A JP14993678 A JP 14993678A JP S5577247 A JPS5577247 A JP S5577247A
Authority
JP
Japan
Prior art keywords
receiver
transmitter
antennas
data
synchronizing
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
JP14993678A
Other languages
Japanese (ja)
Other versions
JPS5841018B2 (en
Inventor
Takao Kibukawa
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.)
Kokusai Electric Corp
Original Assignee
Kokusai 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 Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP14993678A priority Critical patent/JPS5841018B2/en
Publication of JPS5577247A publication Critical patent/JPS5577247A/en
Publication of JPS5841018B2 publication Critical patent/JPS5841018B2/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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0602—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching
    • H04B7/0604—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using antenna switching with predefined switching scheme
    • 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
    • H04B7/0822—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 according to predefined selection scheme

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To obtain diversity effect by a simple method by providing several antennas to either a transmitter or reciver, by changing over connections between antennas and the transmitter or receiver synchronizing with a transmission rate, and then by mixing bit signals by adding after reception. CONSTITUTION:The number of antennas 1 and 2 or 10 and 11 of transmitter 4 or receiver 7 is made plural and respective antennas 1 and 2, and 10 and 11 are connected to transmitter 4 and receiver 7 by way of antenna switch 3. Synchronizing with a transmission rate, this switch 3 is changed over by data transmitting terminal 5 or data receiving terminal 8 controlling the operation of transmitter 4 or receiver 7 to transmit or receiver data. After being demodulated by receiving terminal 8, received bit data are sampled and held, and then added and decoded, thereby obtaining diversity effect by a simple method.
JP14993678A 1978-12-06 1978-12-06 Diversity transmitting and receiving equipment Expired JPS5841018B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14993678A JPS5841018B2 (en) 1978-12-06 1978-12-06 Diversity transmitting and receiving equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14993678A JPS5841018B2 (en) 1978-12-06 1978-12-06 Diversity transmitting and receiving equipment

Publications (2)

Publication Number Publication Date
JPS5577247A true JPS5577247A (en) 1980-06-10
JPS5841018B2 JPS5841018B2 (en) 1983-09-09

Family

ID=15485796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14993678A Expired JPS5841018B2 (en) 1978-12-06 1978-12-06 Diversity transmitting and receiving equipment

Country Status (1)

Country Link
JP (1) JPS5841018B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101133A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS62101132A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS62101134A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS6310836A (en) * 1986-03-28 1988-01-18 Mitsubishi Electric Corp Wireless data transmission equipment
JPS63318826A (en) * 1987-06-22 1988-12-27 Matsushita Electric Works Ltd Radio equipment
JPS6460118A (en) * 1987-08-31 1989-03-07 Hochiki Co Radio transmission equipment
EP0740430A2 (en) * 1995-04-27 1996-10-30 Sharp Kabushiki Kaisha Diversity radio communication system
EP0770977A1 (en) * 1995-10-23 1997-05-02 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co. KG. Method for enhancing the transmission security in radio alarm systems
WO1999029050A1 (en) * 1997-12-02 1999-06-10 Qualcomm Incorporated Method and apparatus for obtaining transmit diversity using switched antennas
US6728919B1 (en) 1998-08-20 2004-04-27 Nec Corporation Mobile telephone system and site diversity reception method

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62101133A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS62101132A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS62101134A (en) * 1985-10-29 1987-05-11 Fujitsu Ltd Radio communication system
JPS6310836A (en) * 1986-03-28 1988-01-18 Mitsubishi Electric Corp Wireless data transmission equipment
JPS63318826A (en) * 1987-06-22 1988-12-27 Matsushita Electric Works Ltd Radio equipment
JPS6460118A (en) * 1987-08-31 1989-03-07 Hochiki Co Radio transmission equipment
EP0740430A2 (en) * 1995-04-27 1996-10-30 Sharp Kabushiki Kaisha Diversity radio communication system
EP0740430A3 (en) * 1995-04-27 1997-01-15 Sharp Kk Diversity radio communication system
US5799245A (en) * 1995-04-27 1998-08-25 Sharp Kabushiki Kaisha Cooperative diversity antenna switching on transmitter and receiver side
EP0770977A1 (en) * 1995-10-23 1997-05-02 GRUNDIG E.M.V. Elektro-Mechanische Versuchsanstalt Max Grundig & Co. KG. Method for enhancing the transmission security in radio alarm systems
WO1999029050A1 (en) * 1997-12-02 1999-06-10 Qualcomm Incorporated Method and apparatus for obtaining transmit diversity using switched antennas
US6795508B1 (en) 1997-12-02 2004-09-21 Qualcomm, Incorporated Method and apparatus for obtaining transmit diversity using switched antennas
US6728919B1 (en) 1998-08-20 2004-04-27 Nec Corporation Mobile telephone system and site diversity reception method

Also Published As

Publication number Publication date
JPS5841018B2 (en) 1983-09-09

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