CN109428644B - 无线通信系统 - Google Patents

无线通信系统 Download PDF

Info

Publication number
CN109428644B
CN109428644B CN201810237645.5A CN201810237645A CN109428644B CN 109428644 B CN109428644 B CN 109428644B CN 201810237645 A CN201810237645 A CN 201810237645A CN 109428644 B CN109428644 B CN 109428644B
Authority
CN
China
Prior art keywords
transmitter
polarized wave
wireless communication
communication system
polarized waves
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
CN201810237645.5A
Other languages
English (en)
Chinese (zh)
Other versions
CN109428644A (zh
Inventor
武井健
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
Publication of CN109428644A publication Critical patent/CN109428644A/zh
Application granted granted Critical
Publication of CN109428644B publication Critical patent/CN109428644B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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)
CN201810237645.5A 2017-08-24 2018-03-21 无线通信系统 Expired - Fee Related CN109428644B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017160842A JP6952536B2 (ja) 2017-08-24 2017-08-24 無線通信システム
JP2017-160842 2017-08-24

Publications (2)

Publication Number Publication Date
CN109428644A CN109428644A (zh) 2019-03-05
CN109428644B true CN109428644B (zh) 2021-11-16

Family

ID=64452132

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810237645.5A Expired - Fee Related CN109428644B (zh) 2017-08-24 2018-03-21 无线通信系统

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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1262797A (zh) * 1997-05-09 2000-08-09 史密斯技术发展有限公司 通信系统
WO2013140457A1 (ja) * 2012-03-23 2013-09-26 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
WO2016075785A1 (ja) * 2014-11-13 2016-05-19 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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9407349B2 (en) 2011-03-09 2016-08-02 Hitachi, Ltd. Polarization-angle-division diversity wireless transmitter, wireless receiver, and wireless communication system
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
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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1262797A (zh) * 1997-05-09 2000-08-09 史密斯技术发展有限公司 通信系统
WO2013140457A1 (ja) * 2012-03-23 2013-09-26 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
WO2016075785A1 (ja) * 2014-11-13 2016-05-19 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

Also Published As

Publication number Publication date
US10148338B1 (en) 2018-12-04
SG10201802484VA (en) 2019-03-28
JP6952536B2 (ja) 2021-10-20
CN109428644A (zh) 2019-03-05
JP2019041199A (ja) 2019-03-14

Similar Documents

Publication Publication Date Title
JP5868489B2 (ja) 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
CN107078786B (zh) 无线通信系统及其利用系统
CN109428644B (zh) 无线通信系统
JP6581437B2 (ja) 無線通信システム
JP2016001816A (ja) 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
CN108123722B (zh) 无线系统、屏蔽区域内无线系统、无线设备
WO2016006068A1 (ja) 無線通信システム、送信機、及び受信機
US10149180B2 (en) Radio communication system, elevator control system using same, and substation facility monitoring system
EP3499738B1 (en) Wireless communication system and wireless surveillance control system
JP6475042B2 (ja) 無線送信機、無線受信機、および無線通信システム
CN108123731B (zh) 无线系统、升降机控制系统、变电设备监视系统
JP6439079B2 (ja) 送信機および受信機
EP3614574B1 (en) Transmitter generating a rotating polarized wave
WO2017213102A1 (ja) 無線システム、およびそれを用いた昇降機制御システム、変電設備監視システム
WO2018185883A1 (ja) 無線通信システム
JP2021040258A (ja) 無線システムおよび無線通信方法
JP7245710B2 (ja) 無線機および無線システム
JP7529045B2 (ja) 無線通信システム、無線通信方法、送信装置、及び受信装置
JP2019041199A5 (cg-RX-API-DMAC7.html)
JP2011015432A (ja) 無線通信システム、無線送信装置、無線受信装置および無線通信方法
WO2017119285A1 (ja) 無線通信システム、無線機、無線通信方法、昇降機制御システム及び変電所制御システム
WO2018096674A1 (ja) 無線システム、およびそれを用いた昇降機制御システム、変電設備監視システム
JP2010016725A (ja) 無線通信システム、無線送信装置、無線受信装置および無線通信方法
JP2008271221A (ja) 放送システム、送信装置、受信装置、送信方法及び受信方法
JP2013219719A (ja) 可搬型無線通信システムの無線受信装置および干渉抑圧方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20211116