CA2430477A1 - Mobile unit communication apparatus - Google Patents

Mobile unit communication apparatus Download PDF

Info

Publication number
CA2430477A1
CA2430477A1 CA002430477A CA2430477A CA2430477A1 CA 2430477 A1 CA2430477 A1 CA 2430477A1 CA 002430477 A CA002430477 A CA 002430477A CA 2430477 A CA2430477 A CA 2430477A CA 2430477 A1 CA2430477 A1 CA 2430477A1
Authority
CA
Canada
Prior art keywords
mobile unit
weighting
antenna elements
communication apparatus
unit communication
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
CA002430477A
Other languages
French (fr)
Other versions
CA2430477C (en
Inventor
Hiroshi Nakamura
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.)
NEC Corp
Original Assignee
Nec Corporation
Hiroshi Nakamura
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 Nec Corporation, Hiroshi Nakamura filed Critical Nec Corporation
Publication of CA2430477A1 publication Critical patent/CA2430477A1/en
Application granted granted Critical
Publication of CA2430477C publication Critical patent/CA2430477C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • 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
    • 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
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • 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
    • H04B7/0615—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 of weighted versions of same signal
    • H04B7/0617—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 of weighted versions of same signal for beam forming

Abstract

A mobile unit communication apparatus according to the present invention has an adaptive antenna having a plurality of antenna elements, for controlling the weighting on the antenna elements thereby to radiate beams that are adapted to radio wave environments, a position estimator for estimating the position of a mobile unit, a beam combiner for weighting signals received from the mobile unit by the antenna elements and combining beams, and a weighting coefficient generator for correcting weighting coefficients adapted to radio wave environments, which give initial weights as weights to form nulls in bearings other than the mobile unit based on the position of the mobile unit which has been estimated by the position estimator, for thereby reducing a time required for convergence.
CA002430477A 2000-11-30 2001-11-22 Mobile unit communication apparatus Expired - Fee Related CA2430477C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2000365037A JP3589292B2 (en) 2000-11-30 2000-11-30 Mobile communication device
JP2000-365037 2000-11-30
PCT/JP2001/010204 WO2002045295A1 (en) 2000-11-30 2001-11-22 Mobile communication device

Publications (2)

Publication Number Publication Date
CA2430477A1 true CA2430477A1 (en) 2002-06-06
CA2430477C CA2430477C (en) 2009-06-30

Family

ID=18835881

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002430477A Expired - Fee Related CA2430477C (en) 2000-11-30 2001-11-22 Mobile unit communication apparatus

Country Status (9)

Country Link
US (1) US7340277B2 (en)
EP (1) EP1341320A4 (en)
JP (1) JP3589292B2 (en)
KR (1) KR100569690B1 (en)
CN (1) CN1241335C (en)
BR (1) BR0116181A (en)
CA (1) CA2430477C (en)
HK (1) HK1063891A1 (en)
WO (1) WO2002045295A1 (en)

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6989797B2 (en) * 1998-09-21 2006-01-24 Ipr Licensing, Inc. Adaptive antenna for use in wireless communication systems
KR100469416B1 (en) * 2002-03-27 2005-02-02 엘지전자 주식회사 Location tracing apparatus and method for mobile terminal
JP4263440B2 (en) * 2002-08-02 2009-05-13 株式会社フジテレビジョン Wireless transmission device
JP4220230B2 (en) 2002-12-18 2009-02-04 株式会社東芝 Service area estimation device
JP4014502B2 (en) 2002-12-27 2007-11-28 三洋電機株式会社 Reception response characteristic holding method and wireless device using the same
WO2004066523A1 (en) * 2003-01-21 2004-08-05 Fujitsu Limited Adaptive control apparatus
JP4280657B2 (en) * 2004-03-01 2009-06-17 富士通株式会社 Beam forming method and apparatus for array antenna
US20090023392A1 (en) * 2005-01-24 2009-01-22 Ntt Docomo, Inc. Mobile communication terminal and method for controlling activation of multi-path interference removing apparatus
WO2006103888A1 (en) * 2005-03-25 2006-10-05 Pioneer Corporation Directivity communication apparatus, communication method, communication program, and communication system using directivity communication apparatus
JP4457148B2 (en) * 2005-05-23 2010-04-28 富士通株式会社 Array antenna directivity control apparatus and directivity control method
JP4828949B2 (en) * 2006-01-31 2011-11-30 富士通株式会社 Speed detection device and wireless device
JP2007248110A (en) * 2006-03-14 2007-09-27 Nec Corp Device and method for monitoring electric wave
JP4972370B2 (en) 2006-09-21 2012-07-11 京セラ株式会社 Wireless communication apparatus and wireless communication method
US7688273B2 (en) 2007-04-20 2010-03-30 Skycross, Inc. Multimode antenna structure
US8344956B2 (en) 2007-04-20 2013-01-01 Skycross, Inc. Methods for reducing near-field radiation and specific absorption rate (SAR) values in communications devices
US8866691B2 (en) 2007-04-20 2014-10-21 Skycross, Inc. Multimode antenna structure
US7688275B2 (en) * 2007-04-20 2010-03-30 Skycross, Inc. Multimode antenna structure
US8619672B2 (en) 2008-06-11 2013-12-31 Qualcomm Incorporated Apparatus and method for multi-sector velocity mobile velocity and doppler estimate for synchronous communication systems
US9645222B2 (en) 2011-08-08 2017-05-09 Trimble Navigation Limited Apparatus for direction finding of wireless signals
WO2013123496A1 (en) 2012-02-16 2013-08-22 Src, Inc. System and method for antenna pattern estimation
US9100974B2 (en) 2012-04-12 2015-08-04 Fidelity Comtech, Inc. System for continuously improving the performance of wireless networks with mobile users
US10096910B2 (en) 2012-06-13 2018-10-09 Skycross Co., Ltd. Multimode antenna structures and methods thereof
JP5556860B2 (en) * 2012-07-25 2014-07-23 日本電気株式会社 Moving object and its beam direction control method
US9648502B2 (en) 2012-08-15 2017-05-09 Trimble Navigation Limited System for tailoring wireless coverage to a geographic area
WO2014088195A1 (en) * 2012-12-04 2014-06-12 Lg Electronics Inc. Method for changing pattern of reference signals according to movement speed of user equipment in wireless communication system, and an apparatus therefor
US20150116162A1 (en) 2013-10-28 2015-04-30 Skycross, Inc. Antenna structures and methods thereof for determining a frequency offset based on a differential magnitude
US9781685B2 (en) * 2013-11-21 2017-10-03 At&T Intellectual Property I, L.P. Self-adaptive coverage of wireless networks
EP3306337A1 (en) * 2016-10-10 2018-04-11 Fraunhofer Gesellschaft zur Förderung der Angewand User equipment localization in a mobile communication network
CN108594197B (en) * 2018-06-27 2022-03-04 南京理工大学 Ground radar self-adaptive distance amplitude weighting system and method
WO2020158103A1 (en) * 2019-01-31 2020-08-06 日本電気株式会社 Active antenna control device, control method thereof, and nontransient computer-readable medium on which program has been stored

Family Cites Families (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4179696A (en) * 1977-05-24 1979-12-18 Westinghouse Electric Corp. Kalman estimator tracking system
IT1205769B (en) * 1987-03-26 1989-03-31 Selenia Spazio Spa RADAR SYSTEM CONSTITUTED BY A SERIES OF INTERCONNECTED ELEMENTARY SATELLITES
US5515378A (en) * 1991-12-12 1996-05-07 Arraycomm, Inc. Spatial division multiple access wireless communication systems
US5452211A (en) * 1992-08-10 1995-09-19 Caterpillar Inc. Method and system for determining vehicle position
US5455588A (en) * 1993-03-01 1995-10-03 Lew; Hyok S. Method for determining target velocity by measuring phase shift
US5317323A (en) * 1993-03-05 1994-05-31 E-Systems, Inc. Passive high accuracy geolocation system and method
JPH0787011A (en) * 1993-09-14 1995-03-31 Toshiba Corp Radio communication system, radio equipment and switch
JPH07140232A (en) 1993-11-19 1995-06-02 Nippon Motorola Ltd Device for detecting moving speed of moving body loaded with receiving unit
JPH08139661A (en) * 1994-11-09 1996-05-31 Kyocera Corp Cellular system car telephone set
US5838276A (en) * 1994-12-30 1998-11-17 Chapman; Aubrey I. Microwave energy implemented aircraft landing system
TW347616B (en) 1995-03-31 1998-12-11 Qualcomm Inc Method and apparatus for performing fast power control in a mobile communication system a method and apparatus for controlling transmission power in a mobile communication system is disclosed.
JPH08274687A (en) * 1995-03-31 1996-10-18 Matsushita Electric Ind Co Ltd Cdma radio transmission equipment and cdma radio transmission system
ZA965340B (en) * 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US5873048A (en) 1995-07-27 1999-02-16 Lucent Technologies Inc. Locator and method for a wireless communication system
US5774829A (en) * 1995-12-12 1998-06-30 Pinterra Corporation Navigation and positioning system and method using uncoordinated beacon signals in conjunction with an absolute positioning system
AUPN733395A0 (en) * 1995-12-22 1996-01-25 University Of Technology, Sydney Location and tracking system
US5856804A (en) * 1996-10-30 1999-01-05 Motorola, Inc. Method and intelligent digital beam forming system with improved signal quality communications
SE514781C2 (en) * 1997-01-28 2001-04-23 Ericsson Telefon Ab L M Method and apparatus in a radio communication system
JP3432697B2 (en) 1997-04-02 2003-08-04 松下電器産業株式会社 Adaptive reception diversity apparatus and adaptive transmission diversity apparatus
US6009335A (en) * 1997-09-26 1999-12-28 Rockwell Science Center, Inc. Method of calibrating and testing spatial nulling antenna
JP3355295B2 (en) * 1997-11-13 2002-12-09 松下電器産業株式会社 Transmission power control method and transmission / reception device
JP3233088B2 (en) 1998-01-22 2001-11-26 松下電器産業株式会社 Directivity control antenna device
JP3913879B2 (en) * 1998-02-03 2007-05-09 富士通株式会社 Communication control apparatus and method based on moving speed
JPH11252614A (en) 1998-03-05 1999-09-17 Kokusai Electric Co Ltd Communication system, base station device and mobile station device
JP2000023225A (en) 1998-06-30 2000-01-21 Kyocera Corp Portable telephone system
JP2000023244A (en) 1998-07-03 2000-01-21 Nec Saitama Ltd Radio communication base station device
JP2000022618A (en) 1998-07-03 2000-01-21 Hitachi Ltd Base station and control method for antenna beam
KR100322001B1 (en) * 1998-09-16 2002-06-22 윤종용 Device and method for measuring position of mobile station in mobile communication system
JP3985883B2 (en) * 1998-10-09 2007-10-03 松下電器産業株式会社 Radio wave arrival direction estimation antenna device
KR100378124B1 (en) * 1998-12-10 2003-06-19 삼성전자주식회사 Device and method for estimating the position of terminal in mobile communication system
JP3034251B1 (en) * 1999-04-16 2000-04-17 株式会社エイ・ティ・アール環境適応通信研究所 Mobile communication device
JP2001094349A (en) * 1999-08-31 2001-04-06 Samsung Electronics Co Ltd Power amplifier for portable telephone terminal
US6492942B1 (en) * 1999-11-09 2002-12-10 Com Dev International, Inc. Content-based adaptive parasitic array antenna system
US6937865B1 (en) * 2000-09-12 2005-08-30 Ericsson Inc. Position detection system integrated into mobile terminal
US6697629B1 (en) * 2000-10-11 2004-02-24 Qualcomm, Incorporated Method and apparatus for measuring timing of signals received from multiple base stations in a CDMA communication system
US6718174B2 (en) * 2000-10-27 2004-04-06 Qualcomm Incorporated Method and apparatus for estimating velocity of a terminal in a wireless communication system
US7057573B2 (en) * 2001-11-07 2006-06-06 Advanced Telecommuications Research Institute International Method for controlling array antenna equipped with a plurality of antenna elements, method for calculating signal to noise ratio of received signal, and method for adaptively controlling radio receiver
US6677898B2 (en) * 2001-12-19 2004-01-13 Advanced Telecommunications Research Institute International Method for controlling array antenna equipped with single radiating element and a plurality of parasitic elements

Also Published As

Publication number Publication date
KR20030055329A (en) 2003-07-02
BR0116181A (en) 2004-02-17
CN1488204A (en) 2004-04-07
EP1341320A4 (en) 2005-08-10
US7340277B2 (en) 2008-03-04
JP3589292B2 (en) 2004-11-17
CA2430477C (en) 2009-06-30
US20040033818A1 (en) 2004-02-19
CN1241335C (en) 2006-02-08
KR100569690B1 (en) 2006-04-11
HK1063891A1 (en) 2005-01-14
EP1341320A1 (en) 2003-09-03
WO2002045295A1 (en) 2002-06-06
JP2002171214A (en) 2002-06-14

Similar Documents

Publication Publication Date Title
CA2430477A1 (en) Mobile unit communication apparatus
AU764605B2 (en) Linear signal separation using polarization diversity
AU1894100A (en) Signal processing method and apparatus for computing an optimal weight vector ofan adaptive antenna array system
JP3888189B2 (en) Adaptive antenna base station equipment
US20170332249A1 (en) Methods and Apparatus for Generating Beam Pattern with Wider Beam Width in Phased Antenna Array
EP1126629A3 (en) Method and system for adaptive signal processing for an antenna array
US20060003697A1 (en) Repeating station, a communication apparatus, and a directivity control method
BR0116092A (en) Compact fuel processor to convert a hydrocarbon fuel feed into a hydrogen rich gas
WO2005060574A3 (en) Wireless communication system using a plurality of antenna elements with adaptive weighting and combining techniques
US20050282587A1 (en) Base station apparatus with reception and diversity weight combining
WO2006016980A3 (en) Method and apparatus capable of interference cancellation
JP2001217759A (en) Radio communication equipment and radio communication method by adaptive array
US7206554B1 (en) Transmit diversity with formed beams in a wireless communications system using a common pilot channel
KR20010032182A (en) Base station device and transmission method
WO2003081836A8 (en) A self-adapting weighted space time transmitting diversity method and system thereof
TW200503436A (en) Combined beamforming-diversity wireless fading channel demodulator using adapted sub-array group antennas, signal receiving system and method for mobile communications
JP2002368520A (en) Adaptive antenna receiver
WO1995034997A3 (en) Diversity combining for antennas
MY144641A (en) Beam-former and combiner for a multiple-antenna system
KR100499472B1 (en) Beamforming System using Adaptive Array in Forward Link
US6317611B1 (en) Communication device with adaptive antenna
EP1494368A3 (en) Receiver with adaptive antenna array
JP3597694B2 (en) Adaptive antenna device
WO2001029988A1 (en) Adaptive array antenna device and base station adaptive array antenna device
US10560133B2 (en) Device for radio communication using a plurality of antennas

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20141124