SG10201802484VA - Wireless communication system - Google Patents

Wireless communication system

Info

Publication number
SG10201802484VA
SG10201802484VA SG10201802484VA SG10201802484VA SG10201802484VA SG 10201802484V A SG10201802484V A SG 10201802484VA SG 10201802484V A SG10201802484V A SG 10201802484VA SG 10201802484V A SG10201802484V A SG 10201802484VA SG 10201802484V A SG10201802484V A SG 10201802484VA
Authority
SG
Singapore
Prior art keywords
different
transmitter
polarized waves
signals
rotationally
Prior art date
Application number
SG10201802484VA
Other languages
English (en)
Inventor
Takei Ken
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
Publication of SG10201802484VA publication Critical patent/SG10201802484VA/en

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
    • H04B7/0891—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)
SG10201802484VA 2017-08-24 2018-03-26 Wireless communication system SG10201802484VA (en)

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 (1)

Publication Number Publication Date
SG10201802484VA true SG10201802484VA (en) 2019-03-28

Family

ID=64452132

Family Applications (1)

Application Number Title Priority Date Filing Date
SG10201802484VA SG10201802484VA (en) 2017-08-24 2018-03-26 Wireless communication system

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
JP6952536B2 (ja) 2021-10-20
CN109428644B (zh) 2021-11-16
CN109428644A (zh) 2019-03-05
JP2019041199A (ja) 2019-03-14

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