JPS5597746A - Diversity system of communication beyond horizon - Google Patents

Diversity system of communication beyond horizon

Info

Publication number
JPS5597746A
JPS5597746A JP591679A JP591679A JPS5597746A JP S5597746 A JPS5597746 A JP S5597746A JP 591679 A JP591679 A JP 591679A JP 591679 A JP591679 A JP 591679A JP S5597746 A JPS5597746 A JP S5597746A
Authority
JP
Japan
Prior art keywords
level value
signal
det
routes
circuit
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
JP591679A
Other languages
Japanese (ja)
Other versions
JPS6138892B2 (en
Inventor
Shigeru Morita
Kazuo Tsukahara
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP591679A priority Critical patent/JPS5597746A/en
Publication of JPS5597746A publication Critical patent/JPS5597746A/en
Publication of JPS6138892B2 publication Critical patent/JPS6138892B2/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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station

Landscapes

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

Abstract

PURPOSE:To increase transmission capacity by giving diversity when the quality of a received signal lowers while making use of a system as a parallel circuit when excellent. CONSTITUTION:Supervisory circuit DET attached to receiver circuit R-1 detects the level value of a receiving input electric field and when the level value is proper, a signal is sent from DET to control circuit CONT to change switching circuits S1 and S2 over to terminals 2. Therefore, the circuits are so constituted that signals S-1 and S-2 of the 1st and the 2nd routes will be transmitted in parallel. Once the level value of the receiving input electric field lowers below a set level value, control circuit CONT changes switching circuits S1 and S2 over to terminal-1 sides by the signal from DET. In this case, only signal S-1 of the 1st route is therefore transmitted by using two routes in common.
JP591679A 1979-01-20 1979-01-20 Diversity system of communication beyond horizon Granted JPS5597746A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP591679A JPS5597746A (en) 1979-01-20 1979-01-20 Diversity system of communication beyond horizon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP591679A JPS5597746A (en) 1979-01-20 1979-01-20 Diversity system of communication beyond horizon

Publications (2)

Publication Number Publication Date
JPS5597746A true JPS5597746A (en) 1980-07-25
JPS6138892B2 JPS6138892B2 (en) 1986-09-01

Family

ID=11624211

Family Applications (1)

Application Number Title Priority Date Filing Date
JP591679A Granted JPS5597746A (en) 1979-01-20 1979-01-20 Diversity system of communication beyond horizon

Country Status (1)

Country Link
JP (1) JPS5597746A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003039031A1 (en) 2001-10-31 2003-05-08 Matsushita Electric Industrial Co., Ltd. Radio transmission apparatus and radio communication method
WO2003043222A1 (en) * 2001-11-13 2003-05-22 Matsushita Electric Industrial Co., Ltd. Communication method and radio communication apparatus
WO2004093346A1 (en) * 2003-04-17 2004-10-28 Fujitsu Limited Information processing apparatus having antenna switching function, communication device, antenna switching control device, antenna switching control program, and computer-readable recording medium containing the program
WO2010095350A1 (en) * 2009-02-19 2010-08-26 日本電気株式会社 Wireless communication apparatus, wireless communication method, and wireless communication system
US7890068B2 (en) 2004-06-10 2011-02-15 Sony Corporation Communication system, transmitting device, and receiving device

Cited By (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1306722C (en) * 2001-10-31 2007-03-21 松下电器产业株式会社 Radio transmission apparatus and radio communication method
US7130592B2 (en) 2001-10-31 2006-10-31 Matsushita Electric Industrial Co., Ltd. Radio transmission apparatus and radio communication method
EP1363410A1 (en) * 2001-10-31 2003-11-19 Matsushita Electric Industrial Co., Ltd. Radio transmission apparatus and radio communication method
EP1363410A4 (en) * 2001-10-31 2010-10-20 Panasonic Corp Radio transmission apparatus and radio communication method
WO2003039031A1 (en) 2001-10-31 2003-05-08 Matsushita Electric Industrial Co., Ltd. Radio transmission apparatus and radio communication method
CN100407595C (en) * 2001-11-13 2008-07-30 松下电器产业株式会社 Communication method and radio communication apparatus
US9735986B2 (en) 2001-11-13 2017-08-15 Panasonic Intellectual Property Corporation Of America Transmission and reception apparatus and method
US10924241B2 (en) 2001-11-13 2021-02-16 Wi-Fi One, Llc Methods and apparatus for transmitting modulation signals
US7688901B2 (en) 2001-11-13 2010-03-30 Panasonic Corporation Transmission method, transmission apparatus, and reception apparatus
US7778339B2 (en) 2001-11-13 2010-08-17 Panasonic Corporation Transmission of a plurality of sub-carriers in an OFDM signal
US8705656B2 (en) 2001-11-13 2014-04-22 Panasonic Corporation Transmission and reception apparatus and method
US11223457B2 (en) 2001-11-13 2022-01-11 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US10651993B2 (en) 2001-11-13 2020-05-12 Wi-Fi One, Llc Methods and apparatus for transmitting modulation signals
US10630443B2 (en) 2001-11-13 2020-04-21 Wi-Fi One, Llc Radio transmission apparatus and methods
US10491351B2 (en) 2001-11-13 2019-11-26 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US7974371B2 (en) 2001-11-13 2011-07-05 Panasonic Corporation Communication method and radio communication apparatus
US8155224B2 (en) 2001-11-13 2012-04-10 Panasonic Corporation Transmission method, transmission apparatus, and reception apparatus
US8229026B2 (en) 2001-11-13 2012-07-24 Panasonic Corporation Processor and processing method for signal transmission
US8428182B2 (en) 2001-11-13 2013-04-23 Panasonic Corporation Communication method and radio communication apparatus
US8446973B2 (en) 2001-11-13 2013-05-21 Panasonic Corporation Transmission and reception apparatus and method
US11115166B2 (en) 2001-11-13 2021-09-07 Wi-Fi One, Llc Radio transmission apparatus and methods for transmitting a single or a plurality of modulation signals from one or more antenna
WO2003043222A1 (en) * 2001-11-13 2003-05-22 Matsushita Electric Industrial Co., Ltd. Communication method and radio communication apparatus
US8744005B2 (en) 2001-11-13 2014-06-03 Panasonic Corporation Method and apparatus for generating modulation signals
US8891678B2 (en) 2001-11-13 2014-11-18 Wi-Fi One, Llc Receiving apparatus and receiving method
US8934578B2 (en) 2001-11-13 2015-01-13 Wi-Fi One, Llc Method of demodulating modulation signals
US8982998B2 (en) 2001-11-13 2015-03-17 Panasonic Intellectual Property Corporation Of America Transmission and reception apparatus and method
US9160596B2 (en) 2001-11-13 2015-10-13 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US9363124B2 (en) 2001-11-13 2016-06-07 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US9628300B2 (en) 2001-11-13 2017-04-18 Wi-Fi One, Llc Method and signal generating apparatus for generating modulation signals
US9647856B2 (en) 2001-11-13 2017-05-09 Wi-Fi One, Llc Transmission apparatus and transmission method
US11218266B2 (en) 2001-11-13 2022-01-04 Redwood Technologies, Llc Methods and apparatus for transmitting modulation signals
US10003443B2 (en) 2001-11-13 2018-06-19 Wi-Fi One, Llc Methods and apparatus for transmitting modulation signals
US10033551B2 (en) 2001-11-13 2018-07-24 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US10263749B2 (en) 2001-11-13 2019-04-16 Panasonic Intellectual Property Corporation Of America Transmission and reception signal processor and method
US10341071B2 (en) 2001-11-13 2019-07-02 Wi-Fi One, Llc Radio transmission apparatus and methods
US10355841B2 (en) 2001-11-13 2019-07-16 Wi-Fi One, Llc Methods and apparatus for transmitting modulation signals
WO2004093346A1 (en) * 2003-04-17 2004-10-28 Fujitsu Limited Information processing apparatus having antenna switching function, communication device, antenna switching control device, antenna switching control program, and computer-readable recording medium containing the program
US7800553B2 (en) 2003-04-17 2010-09-21 Fujitsu Limited Information processing apparatus with antenna switching function, communication apparatus, antenna switching control unit, antenna switching control program, and computer-readable recording medium recording the same program
US7606553B2 (en) 2003-04-17 2009-10-20 Fujitsu Limited Information processing apparatus with antenna switching function, communication apparatus, antenna switching control unit and computer-readable recording medium recording antenna switching control program
US7890068B2 (en) 2004-06-10 2011-02-15 Sony Corporation Communication system, transmitting device, and receiving device
WO2010095350A1 (en) * 2009-02-19 2010-08-26 日本電気株式会社 Wireless communication apparatus, wireless communication method, and wireless communication system
US8457583B2 (en) 2009-02-19 2013-06-04 Nec Corporation Wireless communication device, wireless communication method, and wireless communication system
JP2010193222A (en) * 2009-02-19 2010-09-02 Nec Corp Radio communication device, radio communication method, and radio communication system

Also Published As

Publication number Publication date
JPS6138892B2 (en) 1986-09-01

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