BR0007379A - Sistema de comunicação móvel tendo estações móveis e uma estação base - Google Patents

Sistema de comunicação móvel tendo estações móveis e uma estação base

Info

Publication number
BR0007379A
BR0007379A BR0007379A BR0007379A BR0007379A BR 0007379 A BR0007379 A BR 0007379A BR 0007379 A BR0007379 A BR 0007379A BR 0007379 A BR0007379 A BR 0007379A BR 0007379 A BR0007379 A BR 0007379A
Authority
BR
Brazil
Prior art keywords
signal
frequency
base station
communication system
mobile stations
Prior art date
Application number
BR0007379A
Other languages
English (en)
Inventor
Yoshitaka Kawanabe
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 BR0007379A publication Critical patent/BR0007379A/pt

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G31/00—Soilless cultivation, e.g. hydroponics
    • A01G31/02—Special apparatus therefor
    • A01G31/06—Hydroponic culture on racks or in stacked containers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/71—Interference-related aspects the interference being narrowband interference
    • H04B1/7102—Interference-related aspects the interference being narrowband interference with transform to frequency domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
    • Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Transmission System (AREA)

Abstract

"SISTEMA DE COMUNICAçãO MóVEL TENDO ESTAçõES MóVEIS E UMA ESTAçãO BASE", que inclui uma pluralidade de antenas, uma porção variadora de freq³ência, uma porção combinadora, uma porção receptora e uma porção de processamento de sinal. A antena recebe ondas de rádio transmitidas pelas estações móveis. A porção variadora de freq³ência varia o sinal recebido com uma freq³ência que corresponde a cada uma das antenas. A porção combinadora determina o sinal variado como um sinal combinado. A porção receptora converte o sinal combinado na freq³ência para fazer um sinal de freq³ência intermediária, e converte o sinal de freq³ência intermediária para sinal digital. A porção de processamento de sinal inclui um meio demodulador de difusão, um meio avaliador, e um meio compensador de atenuação.
BR0007379A 1999-02-05 2000-02-04 Sistema de comunicação móvel tendo estações móveis e uma estação base BR0007379A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2933699 1999-02-05
JP19396099A JP3335953B2 (ja) 1999-02-05 1999-07-08 符号分割多元接続システムにおける基地局

Publications (1)

Publication Number Publication Date
BR0007379A true BR0007379A (pt) 2001-09-04

Family

ID=26367524

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007379A BR0007379A (pt) 1999-02-05 2000-02-04 Sistema de comunicação móvel tendo estações móveis e uma estação base

Country Status (6)

Country Link
US (1) US7054397B1 (pt)
EP (1) EP1026834A3 (pt)
JP (1) JP3335953B2 (pt)
KR (1) KR100353129B1 (pt)
CN (1) CN1140970C (pt)
BR (1) BR0007379A (pt)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3226906B2 (ja) 1999-09-24 2001-11-12 埼玉日本電気株式会社 局部発振信号供給方法およびその回路
US8363744B2 (en) 2001-06-10 2013-01-29 Aloft Media, Llc Method and system for robust, secure, and high-efficiency voice and packet transmission over ad-hoc, mesh, and MIMO communication networks
CN100542059C (zh) * 2002-08-28 2009-09-16 美国博通公司 用于接收信号的方法及其装置
US7181220B2 (en) * 2003-09-24 2007-02-20 Intel Corporation Seamless roaming apparatus, systems, and methods
US7702049B2 (en) * 2003-09-30 2010-04-20 Intel Corporation Signal conversion apparatus, systems, and methods
JP2007528665A (ja) * 2004-03-11 2007-10-11 テレフオンアクチーボラゲット エル エム エリクソン（パブル） アンテナダイバーシチシステムにおいてフィーダの数を低減させる方法、装置、基地局、及び基地局サイト
RU2342784C2 (ru) 2004-06-15 2008-12-27 Телефонактиеболагет Лм Эрикссон (Пабл) Устройство и способ пространственного разнесения антенн
JP4234667B2 (ja) * 2004-11-30 2009-03-04 株式会社東芝 移動体用ｏｆｄｍ受信装置
JP4652188B2 (ja) * 2005-09-21 2011-03-16 三菱電機株式会社 高周波モジュール装置
CN101366198A (zh) 2006-01-25 2009-02-11 艾利森电话股份有限公司 用于减少多扇区全向基站中的合成器损耗的方法和装置
US8509724B2 (en) * 2006-11-29 2013-08-13 Telecom Italia S.P.A. Switched beam antenna with digitally controlled weighted radio frequency combining
CN102724679A (zh) * 2011-03-30 2012-10-10 上海太极电子科技发展有限公司 无线信号传输防盲区设计方法
JP5854718B2 (ja) * 2011-09-08 2016-02-09 日本無線株式会社 衛星信号受信機
RU2584458C1 (ru) * 2014-10-17 2016-05-20 Акционерное общество "Конструкторское бюро "Аметист" (АО"КБ"Аметист") Цифровая сканирующая приемная антенная решетка для радиолокационной станции
JP6297177B2 (ja) * 2015-02-06 2018-03-20 三菱電機株式会社 アンテナ装置
CN105784290A (zh) * 2016-03-10 2016-07-20 上海万寅安全环保科技有限公司 一种音频检测装置
JP2019009530A (ja) * 2017-06-21 2019-01-17 ソフトバンク株式会社 無線通信装置、基地局装置、移動局装置、移動体及び通信システム
CN117834045B (zh) * 2024-03-05 2024-05-14 杰创智能科技股份有限公司 接收信号的来波方向测量方法、装置、设备及介质

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4715048A (en) 1986-05-02 1987-12-22 Canadian Patents And Development Limited Frequency offset diversity receiving system
US4956864A (en) * 1987-01-27 1990-09-11 Brockman Milton H Receiver for communications satellite down-link reception
US5179728A (en) * 1991-09-30 1993-01-12 Rockwell International Corporation Spurious product and local oscillator radiation suppression system for use in superheterodyne radio receivers
JP2897492B2 (ja) * 1991-10-24 1999-05-31 日本電気株式会社 移動通信装置
US5592490A (en) * 1991-12-12 1997-01-07 Arraycomm, Inc. Spectrally efficient high capacity wireless communication systems
JP3181415B2 (ja) 1993-02-12 2001-07-03 株式会社東芝 レーダ装置
JP3442156B2 (ja) * 1994-08-31 2003-09-02 富士通株式会社 多重伝搬特性測定装置
US5963586A (en) * 1994-09-09 1999-10-05 Omnipoint Corporation Method and apparatus for parallel noncoherent correlation of a spread spectrum signal
US5742583A (en) * 1994-11-03 1998-04-21 Omnipoint Corporation Antenna diversity techniques
US5787336A (en) * 1994-11-08 1998-07-28 Space Systems/Loral, Inc. Satellite communication power management system
JP2992215B2 (ja) 1994-12-19 1999-12-20 日本アンテナ株式会社 移動体受信アンテナシステム
JP2924730B2 (ja) * 1995-09-13 1999-07-26 日本電気株式会社 信号受信方法
FR2748571B1 (fr) * 1996-05-09 1998-08-07 Europ Agence Spatiale Dispositif de recepteur pour systeme de navigation notamment par satellite
JP3204111B2 (ja) * 1996-08-28 2001-09-04 松下電器産業株式会社 指向性制御アンテナ装置
JP3376224B2 (ja) * 1996-10-23 2003-02-10 株式会社エヌ・ティ・ティ・ドコモ Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機
US5809087A (en) * 1996-10-25 1998-09-15 General Electric Company Coherent detection architecture for remote calibration of coherent systems
US6233459B1 (en) * 1997-04-10 2001-05-15 The Atlantis Company, Limited, Japan System for providing Geolocation of a mobile transceiver
US6172970B1 (en) * 1997-05-05 2001-01-09 The Hong Kong University Of Science And Technology Low-complexity antenna diversity receiver
JP3391662B2 (ja) * 1997-06-06 2003-03-31 松下電器産業株式会社 アダプティブアレーアンテナ受信装置
JPH1188220A (ja) * 1997-09-03 1999-03-30 Toyo Commun Equip Co Ltd 無線信号受信機
US6449469B1 (en) * 1999-03-01 2002-09-10 Visteon Global Technologies, Inc. Switched directional antenna for automotive radio receivers
US6400318B1 (en) * 1999-04-30 2002-06-04 Kabushiki Kaisha Toshiba Adaptive array antenna
JP2002335177A (ja) * 2001-05-09 2002-11-22 Matsushita Electric Ind Co Ltd 無線装置

Also Published As

Publication number Publication date
CN1264223A (zh) 2000-08-23
KR20000062521A (ko) 2000-10-25
EP1026834A3 (en) 2003-01-15
US7054397B1 (en) 2006-05-30
JP2000295169A (ja) 2000-10-20
EP1026834A2 (en) 2000-08-09
KR100353129B1 (ko) 2002-09-18
JP3335953B2 (ja) 2002-10-21
CN1140970C (zh) 2004-03-03

Similar Documents

Publication Publication Date Title
BR0007379A (pt) Sistema de comunicação móvel tendo estações móveis e uma estação base
FI98172B (fi) Menetelmä pilottisignaalin lähettämiseksi ja solukkoradiojärjestelmä
BR9306259A (pt) Sistema para radiocomunicação e sua aplicação
EP1458119A3 (en) Cellular mobile communications system using frequencies commonly shared by neighbouring cells for handoff operations
BR9305477A (pt) Transmissor e receptor apefeiçoados para sinais de radiocomuniações de acesso múltiplo por divisão de código de espectro amplo, sistema de radiocomunicações aperfeiçoado e processos para comunicação e transmissão de informação de voz e para transferência de comunicação de voz de uma estação de base para respectivas unidades móveis em um sistema de radiotelefonia celular.
CA2059370A1 (en) Radiotelephony system
AR043351A1 (es) Sistema y metodo para aumentar la capacidad del sistema celular a traves del uso de la misma frecuencia y el mismo intercambio de tiempo tanto para la transmision de enlace como transmision de enlace descendente
BR9508257A (pt) Sistema de comunicações e de radiotelefone aéreos
GB2408430B (en) Cellular communications systems
ES2107823T3 (es) Instalacion de antena de radio movil.
EP0930513A3 (en) Cellular radio positioning
EP0744876A3 (en) A method of signal transmission in a mobile communication system
MX9101306A (es) Procedimiento de entrega que reduce al minimo las perturbaciones para transmision de señales de dtmfen un sistema de radio celular.
EP1324514A3 (en) A repeater for use in a wireless communication system
PE95698A1 (es) Red de telecomunicacion celular movil no terrestre
BR0111574A (pt) Aparelho e método usando antena inteligente em sistema de comunicação sem fio fdd
EP0704992A3 (en) Cellular communications system with multicarrier signal processing
BR9810594A (pt) Sistema de sobreposição de difusão direta de cdma e método de operação
SE9800272L (sv) Förfarande och system för radiotransmission
WO2003058851A1 (fr) Systeme de communications radio par fibres optiques
SE9203335D0 (sv) Radiomodul ingaaende i en primaer radiostation jaemte radiostruktur innehaallande saadana moduler
AR006094A1 (es) Metodo para mejorar la calidad de establecimiento y transferencia de llamada en una red telefonica celular.
MY112693A (en) Radio station having a remote antenna unit
AR023315A1 (es) Procedimiento y dispositivo para un sistema de radiotransmision y con capacidad duplex completa y con acceso cdma
WO2002007341A3 (en) Cellular radio telecommunication system

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A E 9A 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 NA RPI2003 DE 26/05/2009.

B15K Others concerning applications: alteration of classification

Ipc: H04B 1/71 (2011.01), H04B 1/7115 (2011.01), H04B 7