JPS5710542A - Switching diversity reception system - Google Patents

Switching diversity reception system

Info

Publication number
JPS5710542A
JPS5710542A JP8479380A JP8479380A JPS5710542A JP S5710542 A JPS5710542 A JP S5710542A JP 8479380 A JP8479380 A JP 8479380A JP 8479380 A JP8479380 A JP 8479380A JP S5710542 A JPS5710542 A JP S5710542A
Authority
JP
Japan
Prior art keywords
threshold value
switching
antenna
intensity
value
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
JP8479380A
Other languages
Japanese (ja)
Other versions
JPS5924569B2 (en
Inventor
Masaharu Hata
Fumio Ikegami
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.)
NTT Inc
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 JP55084793A priority Critical patent/JPS5924569B2/en
Publication of JPS5710542A publication Critical patent/JPS5710542A/en
Publication of JPS5924569B2 publication Critical patent/JPS5924569B2/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
    • H04B7/0805—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
    • H04B7/0814—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 based on current reception conditions, e.g. switching to different antenna when signal level is below threshold

Landscapes

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

Abstract

PURPOSE:To obtain a greater improvement over a wide reception level and to obtain the improvement close to a selection diversity, by controlling the switching of antennas and alteration of the threshold value automatically with a specific method. CONSTITUTION:Threshold value output means B1-Bn producing a plurality of threshold values, and antenna switching control means 13 and threshold value switching control means 14 automatically controlling the switching of an antenna A and changing of the threshold value through the intensity of receiving signal in accordance with the following rules, are provided: If the receiving signal intensity of an antenna is the threshold value or less set for the case, switching of antenna is made and the threshold value is changed to a value lower by one step after the switching. Moreover, if the intensity is the threshold value to be set or higher, the threshold value is changed to the value higher by one step.
JP55084793A 1980-06-23 1980-06-23 Switching diversity reception method Expired JPS5924569B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55084793A JPS5924569B2 (en) 1980-06-23 1980-06-23 Switching diversity reception method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55084793A JPS5924569B2 (en) 1980-06-23 1980-06-23 Switching diversity reception method

Publications (2)

Publication Number Publication Date
JPS5710542A true JPS5710542A (en) 1982-01-20
JPS5924569B2 JPS5924569B2 (en) 1984-06-11

Family

ID=13840571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55084793A Expired JPS5924569B2 (en) 1980-06-23 1980-06-23 Switching diversity reception method

Country Status (1)

Country Link
JP (1) JPS5924569B2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499606A (en) * 1982-12-27 1985-02-12 Sri International Reception enhancement in mobile FM broadcast receivers and the like
US4566133A (en) * 1982-12-27 1986-01-21 Commtech International Switched diversity method and apparatus for FM receivers
JPS6247222A (en) * 1985-08-26 1987-02-28 Nec Corp Diversity receiver
US4784864A (en) * 1983-10-25 1988-11-15 Ishida Systems Engineering Co., Ltd. Food wrapper for a dried seaweed covered mass of rice
US5548836A (en) * 1993-07-27 1996-08-20 Matsushita Electric Industrial Co., Ltd. Diversity receiver
US6532623B1 (en) 1999-09-21 2003-03-18 Kayaba Industry Co., Ltd. Caster
US6721550B1 (en) 1999-04-05 2004-04-13 Matsushita Electric Industrial Co., Ltd Diversity receiver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11824611B2 (en) 2021-03-16 2023-11-21 Samsung Electronics Co., Ltd. Wireless communication device including antenna modules and operating method of wireless communication device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4499606A (en) * 1982-12-27 1985-02-12 Sri International Reception enhancement in mobile FM broadcast receivers and the like
US4566133A (en) * 1982-12-27 1986-01-21 Commtech International Switched diversity method and apparatus for FM receivers
US4784864A (en) * 1983-10-25 1988-11-15 Ishida Systems Engineering Co., Ltd. Food wrapper for a dried seaweed covered mass of rice
JPS6247222A (en) * 1985-08-26 1987-02-28 Nec Corp Diversity receiver
US5548836A (en) * 1993-07-27 1996-08-20 Matsushita Electric Industrial Co., Ltd. Diversity receiver
US6721550B1 (en) 1999-04-05 2004-04-13 Matsushita Electric Industrial Co., Ltd Diversity receiver
US6532623B1 (en) 1999-09-21 2003-03-18 Kayaba Industry Co., Ltd. Caster

Also Published As

Publication number Publication date
JPS5924569B2 (en) 1984-06-11

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