BR0014617A - Método e circuito para suprir sinais de oscilação local - Google Patents

Método e circuito para suprir sinais de oscilação local

Info

Publication number
BR0014617A
BR0014617A BR0014617-0A BR0014617A BR0014617A BR 0014617 A BR0014617 A BR 0014617A BR 0014617 A BR0014617 A BR 0014617A BR 0014617 A BR0014617 A BR 0014617A
Authority
BR
Brazil
Prior art keywords
local oscillation
frequency
received
receiver
frequency data
Prior art date
Application number
BR0014617-0A
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 BR0014617A publication Critical patent/BR0014617A/pt

Links

Classifications

    • 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
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/26—Circuits for superheterodyne 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
    • H04B7/0837—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
    • H04B7/084—Equal gain combining, only phase adjustments
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/14—Automatic detuning arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
    • H04B15/04—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder
    • H04B15/06—Reducing interference from electric apparatus by means located at or near the interfering apparatus the interference being caused by substantially sinusoidal oscillations, e.g. in a receiver or in a tape-recorder by local oscillators of 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
    • H04B7/0894—Space-time diversity using different delays between antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0016—Stabilisation of local oscillators

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Superheterodyne Receivers (AREA)
  • Circuits Of Receivers In General (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

"MéTODO E CIRCUITO PARA SUPRIR SINAIS DE OSCILAçãO LOCAL". Com o objetivo de reproduzir com precisão, com circuito de pequeno tamanho, as diferenças de atraso de propagação de antenas de sinais recebidos, que são recebidos como sinal de entrada por meio de uma pluralidade de receptores, um gerador de dados de freq³ência 6 supre dados de freq³ência contendo componente de freq³ência sincronizado em comum com a pluralidade de receptores 2-1 a 2-n. No receptor 2-n, um gerador de sinal de oscilação local 3-n representado por conversor D/A, gera um sinal de oscilação local a partir dos dados de freq³ência sincronizados em comum. A fase de passagem de um sinal recebido fornecido a partir de uma antena 1-n por receptor 1-n assim é corrigida, e daí, a diferença de fase dos sinais recebidos que são recebidos por DSP 8 por meio de pluralidade de receptores 2-1 a 2-n se transforma na diferença de atraso de propagação dos sinais recebidos. Quanto aos dados de freq³ência, os dados de freq³ência contendo uma pluralidade de componentes de freq³ência são supridos a cada receptor 2-n e os dados de freq³ência são selecionados no receptor 2-n e submetidos a uma modulação de quadratura para permitir a geração de sinais de oscilação local de diferentes freq³ências intermediárias.
BR0014617-0A 1999-09-24 2000-09-22 Método e circuito para suprir sinais de oscilação local BR0014617A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP26983199A JP3226906B2 (ja) 1999-09-24 1999-09-24 局部発振信号供給方法およびその回路
PCT/JP2000/006494 WO2001022605A1 (fr) 1999-09-24 2000-09-22 Procede de fourniture de signaux d'oscillation locaux et circuit a cet effet

Publications (1)

Publication Number Publication Date
BR0014617A true BR0014617A (pt) 2002-06-18

Family

ID=17477797

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0014617-0A BR0014617A (pt) 1999-09-24 2000-09-22 Método e circuito para suprir sinais de oscilação local

Country Status (9)

Country Link
US (1) US7187723B1 (pt)
EP (1) EP1223681B1 (pt)
JP (1) JP3226906B2 (pt)
KR (1) KR100446405B1 (pt)
CN (1) CN1192493C (pt)
AU (1) AU7319700A (pt)
BR (1) BR0014617A (pt)
DE (1) DE60039447D1 (pt)
WO (1) WO2001022605A1 (pt)

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US5978379A (en) 1997-01-23 1999-11-02 Gadzoox Networks, Inc. Fiber channel learning bridge, learning half bridge, and protocol
US7430171B2 (en) 1998-11-19 2008-09-30 Broadcom Corporation Fibre channel arbitrated loop bufferless switch circuitry to increase bandwidth without significant increase in cost
EP2104232B1 (en) * 2000-04-28 2012-12-12 Broadcom Corporation Phase interpolator for high-speed serial data transceiver systems
JP4187104B2 (ja) * 2003-10-20 2008-11-26 京セラ株式会社 複数アンテナを備えた基地局装置
JP2005130279A (ja) * 2003-10-24 2005-05-19 Sharp Corp ダイバーシティ受信用チューナ
US20110159809A1 (en) * 2009-12-30 2011-06-30 Peter Kenington Active antenna array with a single common clock and a method for relaying a plurality of radio signals
KR101878875B1 (ko) 2011-12-26 2018-07-17 삼성전자주식회사 통신 기기에서 송신기의 켈리브레이션을 위한 장치 및 방법
US9735940B1 (en) 2012-04-12 2017-08-15 Tarana Wireless, Inc. System architecture for optimizing the capacity of adaptive array systems
US9252908B1 (en) 2012-04-12 2016-02-02 Tarana Wireless, Inc. Non-line of sight wireless communication system and method
US10110270B2 (en) * 2013-03-14 2018-10-23 Tarana Wireless, Inc. Precision array processing using semi-coherent transceivers
WO2014141573A1 (ja) * 2013-03-15 2014-09-18 ソニー株式会社 受信装置および電子機器
US10348394B1 (en) 2014-03-14 2019-07-09 Tarana Wireless, Inc. System architecture and method for enhancing wireless networks with mini-satellites and pseudollites and adaptive antenna processing
JP7091617B2 (ja) * 2017-08-02 2022-06-28 富士通株式会社 光受信器、光伝送システム、及び受信処理方法
JP6768618B2 (ja) * 2017-09-19 2020-10-14 株式会社東芝 アレイアンテナ装置およびアレイアンテナ処理方法
CN111371466A (zh) * 2020-03-09 2020-07-03 珠海格力电器股份有限公司 一种可提高单位时间通讯速率的通信方法、装置及系统
CN113708785B (zh) * 2021-09-15 2023-06-16 许昌学院 一种大数据网络传输抗干扰系统

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JPS60148237A (ja) 1984-01-13 1985-08-05 Fujitsu Ltd スペ−スダイバシテイ制御方式
US4715048A (en) * 1986-05-02 1987-12-22 Canadian Patents And Development Limited Frequency offset diversity receiving system
JPH0834451B2 (ja) 1988-05-02 1996-03-29 松下電器産業株式会社 ダイバシティ受信用周波数変換装置
JPH0810845B2 (ja) 1988-08-31 1996-01-31 松下電器産業株式会社 ワイヤレス受信装置
JP2795866B2 (ja) 1989-01-20 1998-09-10 株式会社東芝 アレイアンテナ装置
JPH03220803A (ja) 1990-01-25 1991-09-30 Nec Corp アレイアンテナの局部信号給電回路
JP3091206B2 (ja) 1990-07-31 2000-09-25 株式会社タムラ製作所 空間ダイバーシチ受信システム
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Also Published As

Publication number Publication date
KR20020035148A (ko) 2002-05-09
KR100446405B1 (ko) 2004-09-01
EP1223681A4 (en) 2007-03-14
DE60039447D1 (de) 2008-08-21
CN1391729A (zh) 2003-01-15
JP2001094454A (ja) 2001-04-06
EP1223681B1 (en) 2008-07-09
EP1223681A1 (en) 2002-07-17
US7187723B1 (en) 2007-03-06
CN1192493C (zh) 2005-03-09
WO2001022605A1 (fr) 2001-03-29
JP3226906B2 (ja) 2001-11-12
AU7319700A (en) 2001-04-24

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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 5A, 6A E 7A 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 1929 DE 26/12/2007.