BR0112854A - Sistema de comunicação de espectro espalhado sem fio para transmitir dados - Google Patents

Sistema de comunicação de espectro espalhado sem fio para transmitir dados

Info

Publication number
BR0112854A
BR0112854A BR0112854-0A BR0112854A BR0112854A BR 0112854 A BR0112854 A BR 0112854A BR 0112854 A BR0112854 A BR 0112854A BR 0112854 A BR0112854 A BR 0112854A
Authority
BR
Brazil
Prior art keywords
signal
spread spectrum
preamble
communication system
spectrum communication
Prior art date
Application number
BR0112854-0A
Other languages
English (en)
Inventor
Mark Kendall Cornwall
Harry Price Haas
Original Assignee
Itron Inc
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 Itron Inc filed Critical Itron Inc
Publication of BR0112854A publication Critical patent/BR0112854A/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
    • H04B1/69—Spread spectrum techniques
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • H04B1/7156—Arrangements for sequence synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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
    • H04B1/713—Spread spectrum techniques using frequency hopping
    • 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
    • H04B1/709—Correlator structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

"SISTEMA DE COMUNICAçãO DE ESPECTRO ESPALHADO SEM FIO PARA TRANSMITIR DADOS". Um sistema de comunicação de espectro espalhado sem fio para transmitir dados inclui diversos transmissores de extremidade e pelo menos um receptor. Os transmissores de extremidade transmitem dados via um sinal de espectro espalhado em salto de freq³ência, em que a transmissão do sinal é enviada sem o benefício de estabilização da freq³ência. O receptor responde aos sinais de espectro espalhado em salto de freq³ência e inclui um correlacionador e um processador de sinal. O correlacionador amostra pelo menos uma primeira porção de um preâmbulo do sinal e correlaciona a porção do preâmbulo com um padrão de preâmbulo conhecido para determinar uma probabilidade de correlação. O processador de sinal aplica um algoritmo Transformada Rápida de Fourier ao sinal em resposta à probabilidade de correlação para rastrear uma freq³ência de banda estreita do sinal com base pelo menos numa segunda porção do preâmbulo e para decodificar dados codificados no sinal subseq³ente ao preâmbulo.
BR0112854-0A 2000-08-01 2001-08-01 Sistema de comunicação de espectro espalhado sem fio para transmitir dados BR0112854A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US22225600P 2000-08-01 2000-08-01
PCT/US2001/024058 WO2002011348A2 (en) 2000-08-01 2001-08-01 Frequency hopping spread spectrum system with high sensitivity tracking and synchronization for frequency unstable signals

Publications (1)

Publication Number Publication Date
BR0112854A true BR0112854A (pt) 2003-08-26

Family

ID=22831505

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0112854-0A BR0112854A (pt) 2000-08-01 2001-08-01 Sistema de comunicação de espectro espalhado sem fio para transmitir dados

Country Status (12)

Country Link
US (2) US6934316B2 (pt)
EP (1) EP1305923B1 (pt)
JP (1) JP2004505544A (pt)
KR (1) KR20030026993A (pt)
AT (1) ATE472859T1 (pt)
AU (2) AU8469101A (pt)
BR (1) BR0112854A (pt)
CA (1) CA2416312C (pt)
DE (1) DE60142477D1 (pt)
ES (1) ES2349698T3 (pt)
MX (1) MXPA03000916A (pt)
WO (1) WO2002011348A2 (pt)

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Also Published As

Publication number Publication date
US20060056493A1 (en) 2006-03-16
JP2004505544A (ja) 2004-02-19
US7577181B2 (en) 2009-08-18
EP1305923B1 (en) 2010-06-30
AU8469101A (en) 2002-02-13
US20020071478A1 (en) 2002-06-13
EP1305923A4 (en) 2007-04-04
WO2002011348A3 (en) 2002-03-28
ES2349698T3 (es) 2011-01-10
CA2416312A1 (en) 2002-02-07
ATE472859T1 (de) 2010-07-15
MXPA03000916A (es) 2003-10-14
EP1305923A2 (en) 2003-05-02
WO2002011348A2 (en) 2002-02-07
AU2001284691B2 (en) 2005-09-22
US6934316B2 (en) 2005-08-23
CA2416312C (en) 2008-02-12
KR20030026993A (ko) 2003-04-03
DE60142477D1 (de) 2010-08-12

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