CN109428644B - 无线通信系统 - Google Patents

无线通信系统 Download PDF

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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
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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
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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

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    • 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
JP2017-160842 2017-08-24
JP2017160842A JP6952536B2 (ja) 2017-08-24 2017-08-24 無線通信システム

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 (enExample)
JP (1) JP6952536B2 (enExample)
CN (1) CN109428644B (enExample)
SG (1) SG10201802484VA (enExample)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021161928A1 (ja) * 2020-02-14 2021-08-19 株式会社村田製作所 電力増幅回路、高周波回路及び通信装置
CN116318536B (zh) * 2022-12-26 2026-05-29 江苏钜芯集成电路技术股份有限公司 一种线性分组码冗余传输的方法和装置

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
JP5632530B2 (ja) 2011-03-09 2014-11-26 株式会社日立製作所 偏波角度分割ダイバシチ無線送信機、無線受信機、および無線通信システム
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
JP5986323B2 (ja) 2013-10-18 2016-09-06 株式会社日立製作所 高セキュア無線通信システム
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
JP2019041199A (ja) 2019-03-14
CN109428644A (zh) 2019-03-05
SG10201802484VA (en) 2019-03-28
US10148338B1 (en) 2018-12-04
JP6952536B2 (ja) 2021-10-20

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Granted publication date: 20211116