JP6952536B2 - 無線通信システム - Google Patents

無線通信システム Download PDF

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Publication number
JP6952536B2
JP6952536B2 JP2017160842A JP2017160842A JP6952536B2 JP 6952536 B2 JP6952536 B2 JP 6952536B2 JP 2017160842 A JP2017160842 A JP 2017160842A JP 2017160842 A JP2017160842 A JP 2017160842A JP 6952536 B2 JP6952536 B2 JP 6952536B2
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JP
Japan
Prior art keywords
wireless communication
communication system
transmitter
polarization
information
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.)
Expired - Fee Related
Application number
JP2017160842A
Other languages
English (en)
Japanese (ja)
Other versions
JP2019041199A (ja
JP2019041199A5 (cg-RX-API-DMAC7.html
Inventor
武井　健
健 武井
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP2017160842A priority Critical patent/JP6952536B2/ja
Priority to CN201810237645.5A priority patent/CN109428644B/zh
Priority to US15/928,987 priority patent/US10148338B1/en
Priority to SG10201802484VA priority patent/SG10201802484VA/en
Publication of JP2019041199A publication Critical patent/JP2019041199A/ja
Publication of JP2019041199A5 publication Critical patent/JP2019041199A5/ja
Application granted granted Critical
Publication of JP6952536B2 publication Critical patent/JP6952536B2/ja
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H04B7/0891—Space-time diversity
    • H04B7/0894—Space-time diversity using different delays between antennas
    • 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
    • H04B7/10—Polarisation diversity; Directional diversity
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H01Q21/245—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction provided with means for varying the polarisation 
    • 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
    • H04B7/0613—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 simultaneous transmission
    • 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
    • H04B7/0842—Weighted combining
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Transceivers (AREA)
JP2017160842A 2017-08-24 2017-08-24 無線通信システム Expired - Fee Related JP6952536B2 (ja)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2017160842A JP6952536B2 (ja) 2017-08-24 2017-08-24 無線通信システム
CN201810237645.5A CN109428644B (zh) 2017-08-24 2018-03-21 无线通信系统
US15/928,987 US10148338B1 (en) 2017-08-24 2018-03-22 Wireless communication system
SG10201802484VA SG10201802484VA (en) 2017-08-24 2018-03-26 Wireless communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017160842A JP6952536B2 (ja) 2017-08-24 2017-08-24 無線通信システム

Publications (3)

Publication Number Publication Date
JP2019041199A JP2019041199A (ja) 2019-03-14
JP2019041199A5 JP2019041199A5 (cg-RX-API-DMAC7.html) 2020-02-13
JP6952536B2 true JP6952536B2 (ja) 2021-10-20

Family

ID=64452132

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017160842A Expired - Fee Related JP6952536B2 (ja) 2017-08-24 2017-08-24 無線通信システム

Country Status (4)

Country Link
US (1) US10148338B1 (cg-RX-API-DMAC7.html)
JP (1) JP6952536B2 (cg-RX-API-DMAC7.html)
CN (1) CN109428644B (cg-RX-API-DMAC7.html)
SG (1) SG10201802484VA (cg-RX-API-DMAC7.html)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115088190A (zh) * 2020-02-14 2022-09-20 株式会社村田制作所 功率放大电路、高频电路以及通信装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW406488B (en) * 1997-05-09 2000-09-21 Basic Res Corp Communications system
US9407349B2 (en) 2011-03-09 2016-08-02 Hitachi, Ltd. Polarization-angle-division diversity wireless transmitter, wireless receiver, and wireless communication system
JP5868489B2 (ja) * 2012-03-23 2016-02-24 株式会社日立製作所 無線通信システム、昇降機制御システムおよび変電設備制御システム
WO2014155470A1 (ja) 2013-03-25 2014-10-02 株式会社 日立製作所 無線送信機、無線通信システム、昇降機制御・監視システム、および、変電設備制御・監視システム
US10470039B2 (en) 2013-10-18 2019-11-05 Hitachi, Ltd. Highly-secure wireless communication system
JP2016001816A (ja) * 2014-06-12 2016-01-07 株式会社日立製作所 無線通信システム、及びこれを用いた昇降機システム並びに変電設備監視システム
JP6280993B2 (ja) * 2014-11-13 2018-02-14 株式会社日立製作所 無線通信システムおよびその利用システム
JP6583292B2 (ja) * 2015-01-05 2019-10-02 日本電気株式会社 Ｍｉｍｏ復調装置及び方法、並びに見通し内ｍｉｍｏ無線通信システム

Also Published As

Publication number Publication date
US10148338B1 (en) 2018-12-04
SG10201802484VA (en) 2019-03-28
CN109428644B (zh) 2021-11-16
CN109428644A (zh) 2019-03-05
JP2019041199A (ja) 2019-03-14

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