CA2301089A1 - Adaptive-directivity transmission apparatus and adaptive-directivity transmission method - Google Patents

Adaptive-directivity transmission apparatus and adaptive-directivity transmission method Download PDF

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Publication number
CA2301089A1
CA2301089A1 CA002301089A CA2301089A CA2301089A1 CA 2301089 A1 CA2301089 A1 CA 2301089A1 CA 002301089 A CA002301089 A CA 002301089A CA 2301089 A CA2301089 A CA 2301089A CA 2301089 A1 CA2301089 A1 CA 2301089A1
Authority
CA
Canada
Prior art keywords
transmission
radiation pattern
weight
adaptive
error
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
CA002301089A
Other languages
French (fr)
Other versions
CA2301089C (en
Inventor
Minako Ide
Katsuhiko Hiramatsu
Keiji Takakusaki
Hideki Yukitomo
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.)
Panasonic Holdings Corp
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2301089A1 publication Critical patent/CA2301089A1/en
Application granted granted Critical
Publication of CA2301089C publication Critical patent/CA2301089C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • 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
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)

Abstract

A diversity receiver estimates a reception weight using signals received at a plurality of antennas, a target pattern former forms a target radiation pattern based on the estimated reception weight, a transmission pattern former forms a transmission radiation pattern with a transmission weight using an arbitrary transmission weight as an initial value, a controller limits an angle range in which formation of the target radiation pattern and formation of the transmission radiation pattern are executed, an error detector detects an error between the target radiation pattern and the transmission radiation pattern, and subjects the detected error to logarithmic transformation, an updator updates the transmission weight so as to reduce the error subjected to logarithmic transformation, and a directivity former provides a transmission signal with a directivity according to the transmission radiation pattern formed using an updated transmission weight.
CA002301089A 1998-06-24 1999-06-14 Adaptive-directivity transmission apparatus and adaptive-directivity transmission method Expired - Fee Related CA2301089C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP10177525A JP2000013290A (en) 1998-06-24 1998-06-24 Diversity communication device and its method
JP10-177525 1998-06-24
PCT/JP1999/003162 WO1999067900A1 (en) 1998-06-24 1999-06-14 Adaptive directivity transmission device and method

Publications (2)

Publication Number Publication Date
CA2301089A1 true CA2301089A1 (en) 1999-12-29
CA2301089C CA2301089C (en) 2003-12-23

Family

ID=16032454

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002301089A Expired - Fee Related CA2301089C (en) 1998-06-24 1999-06-14 Adaptive-directivity transmission apparatus and adaptive-directivity transmission method

Country Status (7)

Country Link
US (1) US6501943B1 (en)
EP (1) EP1003298A4 (en)
JP (1) JP2000013290A (en)
CN (1) CN1129246C (en)
AU (1) AU4166199A (en)
CA (1) CA2301089C (en)
WO (1) WO1999067900A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2792129B1 (en) * 1999-04-07 2006-07-28 Valeo Securite Habitacle PORTABLE SIGNAL RECEIVER WITH MULTIPLE ANTENNAS
JP2001203619A (en) * 2000-01-19 2001-07-27 Matsushita Electric Ind Co Ltd Wireless base station device and wireless communication method
JP4318389B2 (en) * 2000-04-03 2009-08-19 三洋電機株式会社 Adaptive array device, wireless base station, mobile phone
US7072315B1 (en) 2000-10-10 2006-07-04 Adaptix, Inc. Medium access control for orthogonal frequency-division multiple-access (OFDMA) cellular networks
FR2816141B1 (en) * 2000-10-31 2002-12-06 Mitsubishi Electric Inf Tech METHOD FOR OBTAINING TRANSMIT GAIN FUNCTION
EP1215507A3 (en) * 2000-12-12 2002-08-28 Matsushita Electric Industrial Co., Ltd. Radio-wave arrival-direction estimating apparatus and directional variable transceiver
US6947748B2 (en) 2000-12-15 2005-09-20 Adaptix, Inc. OFDMA with adaptive subcarrier-cluster configuration and selective loading
JP2002217804A (en) * 2001-01-22 2002-08-02 Nippon Soken Inc Adaptive array antenna device
US6873293B2 (en) * 2002-03-08 2005-03-29 Ipr Licensing, Inc. Adaptive receive and omnidirectional transmit antenna array
JP3888189B2 (en) * 2002-03-12 2007-02-28 松下電器産業株式会社 Adaptive antenna base station equipment
EP1490980A4 (en) * 2002-03-14 2005-12-14 Ipr Licensing Inc Mobile communication handset with adaptive antenna array
JP3679075B2 (en) 2002-09-13 2005-08-03 松下電器産業株式会社 Radio transmission apparatus and radio transmission method
WO2004079945A1 (en) * 2003-03-04 2004-09-16 Nec Corporation Adaptive antenna reception device having preferable reception quality of directivity beam from the initial stage
EP1603255B1 (en) * 2003-03-12 2018-06-20 NEC Corporation Transmission beam control method, adaptive antenna transmitter/receiver apparatus and radio base station
JP4148950B2 (en) * 2003-03-31 2008-09-10 富士通株式会社 Receiver
US8577296B2 (en) * 2008-08-29 2013-11-05 Empire Technology Development, Llc Weighting factor adjustment in adaptive antenna arrays
CN102142869B (en) * 2010-11-22 2014-04-30 华为技术有限公司 Method and device for compensating active antenna failure and active antenna equipment
TWI661611B (en) * 2017-09-29 2019-06-01 Arcadyan Technology Corporation Smart antenna and controlling method thereof for passive wi-fi device
US11442158B2 (en) 2019-08-01 2022-09-13 Rohde & Schwarz Gmbh & Co. Kg Multiple input multiple output imaging array and corresponding imaging method
CN114487211A (en) * 2022-03-16 2022-05-13 河北科技大学 GC-FID monitoring method and system for monitoring volatile organic compounds in second-level real time

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6101399A (en) * 1995-02-22 2000-08-08 The Board Of Trustees Of The Leland Stanford Jr. University Adaptive beam forming for transmitter operation in a wireless communication system
JPH09219615A (en) 1996-02-14 1997-08-19 Toshiba Corp Directivity control method for adaptive array transmitter-receiver, radio communication system and adaptive array transmitter-receiver
EP0807989B1 (en) * 1996-05-17 2001-06-27 Motorola Ltd Devices for transmitter path weights and methods therefor
JPH09326630A (en) * 1996-06-05 1997-12-16 N T T Ido Tsushinmo Kk Adaptive array antenna system
JP3816162B2 (en) * 1996-10-18 2006-08-30 株式会社東芝 Beamwidth control method for adaptive antenna
JP3734065B2 (en) 1997-07-04 2006-01-11 ヤンマー株式会社 Tractor

Also Published As

Publication number Publication date
CN1272986A (en) 2000-11-08
US6501943B1 (en) 2002-12-31
EP1003298A1 (en) 2000-05-24
AU4166199A (en) 2000-01-10
CN1129246C (en) 2003-11-26
WO1999067900A1 (en) 1999-12-29
CA2301089C (en) 2003-12-23
JP2000013290A (en) 2000-01-14
EP1003298A4 (en) 2004-05-26

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EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20110614