BR9812914A - Receptor, dispositivo para estimar um desvio de frequência associado com um sinal recebido, e, processo de sincronização de uma corrente de dados - Google Patents

Receptor, dispositivo para estimar um desvio de frequência associado com um sinal recebido, e, processo de sincronização de uma corrente de dados

Info

Publication number
BR9812914A
BR9812914A BR9812914-7A BR9812914A BR9812914A BR 9812914 A BR9812914 A BR 9812914A BR 9812914 A BR9812914 A BR 9812914A BR 9812914 A BR9812914 A BR 9812914A
Authority
BR
Brazil
Prior art keywords
received signal
frequency
frequency deviation
synchronizing
estimating
Prior art date
Application number
BR9812914-7A
Other languages
English (en)
Inventor
Sandeep Chennakeshu
Karl Molnar
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of BR9812914A publication Critical patent/BR9812914A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/042—Detectors therefor, e.g. correlators, state machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

<B>"RECEPTOR, DISPOSITIVO PARA ESTIMAR UM DESVIO DE FREQâêNCIA ASSOCIADO COM UM SINAL RECEBIDO, E, PROCESSO DE SINCRONIZAçãO DE UMA CORRENTE DE DADOS"<D>. Um processo e aparelho para sincronizar e demodular sinais de onda de rádio transmitidos em formato de quadro com uma palavra singular, envolvendo a correção do desvio de freq³ência do sinal recebido e correlacionando diferencialmente o sinal corrigido em freq³ência com a palavra singular. Uma primeira estimativa de tempo é adicionalmente refinada por uma busca em 2-D entre a freq³ência e tempo e uma primeira estimativa de freq³ência é adicionalmente refinada pela interpolação quadrática. O sinal sincronizado finamente é demodulado utilizando um demodulador baseado em Viterbi.
BR9812914-7A 1997-10-14 1998-09-30 Receptor, dispositivo para estimar um desvio de frequência associado com um sinal recebido, e, processo de sincronização de uma corrente de dados BR9812914A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/950,134 US6134286A (en) 1997-10-14 1997-10-14 Synchronization techniques and systems for radiocommunication
PCT/US1998/019894 WO1999020023A1 (en) 1997-10-14 1998-09-30 Synchronization techniques and systems for radiocommunication

Publications (1)

Publication Number Publication Date
BR9812914A true BR9812914A (pt) 2000-08-08

Family

ID=25490009

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9812914-7A BR9812914A (pt) 1997-10-14 1998-09-30 Receptor, dispositivo para estimar um desvio de frequência associado com um sinal recebido, e, processo de sincronização de uma corrente de dados

Country Status (8)

Country Link
US (1) US6134286A (pt)
EP (1) EP1023798A1 (pt)
JP (1) JP2001520484A (pt)
CN (1) CN1174590C (pt)
AU (1) AU751774B2 (pt)
BR (1) BR9812914A (pt)
CA (1) CA2306917A1 (pt)
WO (1) WO1999020023A1 (pt)

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Also Published As

Publication number Publication date
US6134286A (en) 2000-10-17
AU9576498A (en) 1999-05-03
JP2001520484A (ja) 2001-10-30
EP1023798A1 (en) 2000-08-02
CA2306917A1 (en) 1999-04-22
AU751774B2 (en) 2002-08-29
CN1282479A (zh) 2001-01-31
CN1174590C (zh) 2004-11-03
WO1999020023A1 (en) 1999-04-22

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