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)

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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
WO2004021506A2 (en) * 2002-08-28 2004-03-11 Zyray Wireless, Inc. Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements
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
CA2545517C (en) * 2004-03-11 2014-05-06 Telefonaktiebolaget Lm Ericsson (Publ) An antenna diversity system
JP4491654B2 (ja) 2004-06-15 2010-06-30 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） アンテナダイバシティ装置とその方法
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
JP2009524980A (ja) * 2006-01-25 2009-07-02 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） マルチセクタオムニ基地局におけるコンバイナ損失を低減するための方法と装置
EP2113145B1 (en) * 2006-11-29 2011-01-19 Telecom Italia S.p.A. Switched beam antenna system and method 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
US10284239B2 (en) 2015-02-06 2019-05-07 Mitsubishi Electric Corporation Antenna device
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

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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
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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
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Also Published As

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

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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