BR9915625A - Conjunto de circuitos e método para controlar uma direcionalidade de uma antena adaptável - Google Patents

Conjunto de circuitos e método para controlar uma direcionalidade de uma antena adaptável

Info

Publication number
BR9915625A
BR9915625A BR9915625-3A BR9915625A BR9915625A BR 9915625 A BR9915625 A BR 9915625A BR 9915625 A BR9915625 A BR 9915625A BR 9915625 A BR9915625 A BR 9915625A
Authority
BR
Brazil
Prior art keywords
directionality
antenna
pilot
channel
circuitry
Prior art date
Application number
BR9915625-3A
Other languages
English (en)
Inventor
Kenichi Takai
Original Assignee
Nec Corp
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 Corp filed Critical Nec Corp
Publication of BR9915625A publication Critical patent/BR9915625A/pt

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
    • H01Q3/30—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 varying the relative phase between the radiating elements of an array
    • H01Q3/34—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 varying the relative phase between the radiating elements of an array by electrical means
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/29—Combinations of different interacting antenna units for giving a desired directional characteristic
    • 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
    • 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
    • H04B7/0619—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 using feedback from receiving side
    • 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

Landscapes

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

Abstract

"CONJUNTO DE CIRCUITOS E MéTODO PARA CONTROLAR UMA DERECIONALIDADE DE UMA ANTENA ADAPTáVEL", que inclui uma pluralidade de elementos para antena e formar uma direcionalidade por variar sinais alimentados aos elementos de antena de modo que um ganho em uma direção pré-selecionada seja observado. O conjunto de circuitos inclui uma seção de transmissão para transmitir um canal piloto de exame para ser examinado em uma ligação de recepção enquanto faz o canal piloto se mover em uma faixa de propagação coberta pela antena adaptável. Uma seção de recepção recebe um sinal representativo da intensidade do canal piloto de exame recebido por uma estação móvel. Um controlador detecta a direção de transmissão na qual a estação móvel recebe o canal piloto de exame com a qualidade mais alta e aplica o parâmetro de direcionalidade da direção detectada para a direcionalidade de ligação da recepção. O conjunto de circuitos melhora a direcionalidade da ligação de recepção na comunicação móvel.
BR9915625-3A 1998-04-10 1999-04-09 Conjunto de circuitos e método para controlar uma direcionalidade de uma antena adaptável BR9915625A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10099226A JPH11298400A (ja) 1998-04-10 1998-04-10 適応アンテナの指向性制御回路及び指向性制御方法

Publications (1)

Publication Number Publication Date
BR9915625A true BR9915625A (pt) 2001-07-31

Family

ID=14241762

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9915625-3A BR9915625A (pt) 1998-04-10 1999-04-09 Conjunto de circuitos e método para controlar uma direcionalidade de uma antena adaptável

Country Status (6)

Country Link
US (1) US6140961A (pt)
EP (1) EP0949709A1 (pt)
JP (1) JPH11298400A (pt)
KR (1) KR100331010B1 (pt)
CN (1) CN1192518C (pt)
BR (1) BR9915625A (pt)

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JP3447579B2 (ja) * 1998-10-07 2003-09-16 松下電器産業株式会社 無線通信装置及び無線通信方法
JP4187377B2 (ja) 2000-02-23 2008-11-26 富士通株式会社 無線送受信機及び電波放射方向制御方法
TW513873B (en) 2000-07-27 2002-12-11 Sanyo Electric Co Radio equipment capable of real time change of antenna directivity and Doppler frequency estimating circuit used for the radio equipment
GB0020088D0 (en) 2000-08-15 2000-10-04 Fujitsu Ltd Adaptive beam forming
GB2371947B (en) * 2001-02-01 2005-02-23 Fujitsu Ltd Communications systems
JP3575437B2 (ja) * 2001-05-10 2004-10-13 日本電気株式会社 指向性制御装置
JP4053265B2 (ja) * 2001-08-24 2008-02-27 株式会社東芝 無線通信用アダプティブアレイ及びアダプティブアレイを用いた無線通信システム
JP2003152610A (ja) * 2001-11-19 2003-05-23 Hitachi Ltd 無線通信装置
WO2004032376A1 (ja) * 2002-10-07 2004-04-15 Fujitsu Limited Cdma通信装置
JP3929388B2 (ja) * 2002-11-11 2007-06-13 松下電器産業株式会社 基地局装置及び通信端末装置
JP2004201137A (ja) * 2002-12-19 2004-07-15 Ntt Docomo Inc 指向性ビーム通信システム、指向性ビーム通信方法、基地局及び制御装置
JP4247019B2 (ja) * 2003-03-24 2009-04-02 京セラ株式会社 無線通信機
KR20040098752A (ko) * 2003-05-15 2004-11-26 엘지전자 주식회사 이동통신 시스템에서의 채널화코드 할당방법
US8626080B2 (en) * 2008-03-11 2014-01-07 Intel Corporation Bidirectional iterative beam forming
FR3010836B1 (fr) * 2013-09-18 2016-12-09 Centre Nat Rech Scient Dispositif de reflexion d'une onde, dispositif mobile, et systeme
JP6438203B2 (ja) * 2014-03-20 2018-12-12 株式会社Ｎｔｔドコモ 基地局及びユーザ装置
JP6468034B2 (ja) * 2015-04-01 2019-02-13 富士通株式会社 基地局、無線通信システム、および基地局の処理方法
JP6441787B2 (ja) * 2015-12-09 2018-12-19 Ｎｅｃプラットフォームズ株式会社 無線中継装置、システム、方法およびプログラム

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US5109390A (en) * 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
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Also Published As

Publication number Publication date
CN1235390A (zh) 1999-11-17
KR19990083110A (ko) 1999-11-25
EP0949709A1 (en) 1999-10-13
KR100331010B1 (ko) 2002-04-01
JPH11298400A (ja) 1999-10-29
US6140961A (en) 2000-10-31
CN1192518C (zh) 2005-03-09

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1913 DE 04/09/2007.