BR9808879A - Sistema e método de sincronização para sistemas de comunicação digital - Google Patents

Sistema e método de sincronização para sistemas de comunicação digital

Info

Publication number
BR9808879A
BR9808879A BR9808879-3A BR9808879A BR9808879A BR 9808879 A BR9808879 A BR 9808879A BR 9808879 A BR9808879 A BR 9808879A BR 9808879 A BR9808879 A BR 9808879A
Authority
BR
Brazil
Prior art keywords
communication systems
digital communication
timing
timing estimator
synchronization system
Prior art date
Application number
BR9808879-3A
Other languages
English (en)
Inventor
Dudi Ben-Eli
Original Assignee
Dspc Tech Ltd
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 Dspc Tech Ltd filed Critical Dspc Tech Ltd
Publication of BR9808879A publication Critical patent/BR9808879A/pt

Links

Classifications

    • 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
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/0034—Correction of carrier offset using hypothesis testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop
    • H04L7/0337—Selecting between two or more discretely delayed clocks or selecting between two or more discretely delayed received code signals
    • 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
    • H04L7/10—Arrangements for initial synchronisation

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

"SISTEMA E MéTODO DE SINCRONIZAçãO PARA SISTEMAS DE COMUNICAçãO DIGITAL" Trata-se de um sincronizador (38), o qual inclui um estimador inicial de temporização (50) e um estimador combinado de desvio de freq³ência e temporização apurada (52). O estimador inicial de temporização (50) determina um valor grosseiro de temporização, a partir do fornecimento de amostras de dados e de uma palavra referencial de sincronização. O estimador combinado de desvio de freq³ência e temporização apurada (52) opera em uma vizinhança próxima ao estimador grosseiro de temporização e determina o desvio de freq³ência e a temporização sincronizada, partir das amostras de dados de entrada e da palavra referencial de sicronização.
BR9808879-3A 1997-02-13 1998-02-10 Sistema e método de sincronização para sistemas de comunicação digital BR9808879A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL12021097A IL120210A (en) 1997-02-13 1997-02-13 Synchronization system and method for digital communication systems
PCT/IL1998/000065 WO1998036580A2 (en) 1997-02-13 1998-02-10 A synchronization system and method for digital communication systems

Publications (1)

Publication Number Publication Date
BR9808879A true BR9808879A (pt) 2000-07-11

Family

ID=11069800

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9808879-3A BR9808879A (pt) 1997-02-13 1998-02-10 Sistema e método de sincronização para sistemas de comunicação digital

Country Status (7)

Country Link
US (2) US6301317B1 (pt)
EP (1) EP0960498A4 (pt)
AU (1) AU5877298A (pt)
BR (1) BR9808879A (pt)
CA (1) CA2280689A1 (pt)
IL (1) IL120210A (pt)
WO (1) WO1998036580A2 (pt)

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FI105629B (fi) * 1997-12-22 2000-09-15 Nokia Networks Oy Menetelmä taajuusvirheen estimointiin
US6169885B1 (en) 1998-08-07 2001-01-02 Ericsson Inc Radio devices including power amplifier control circuits with hardware lockouts
US6487255B1 (en) * 1998-08-31 2002-11-26 Ericsson Inc. Information generation for coherent demodulation of differentially encoded signals
US6519300B1 (en) 1998-11-12 2003-02-11 Ericsson Inc. System and method for automatic frequency correction in a pilot symbol assisted demodulator
FR2799909A1 (fr) * 1999-10-13 2001-04-20 Koninkl Philips Electronics Nv Correction en frequence a la reception dans un systeme de transmission par paquets
EP1100224A1 (fr) * 1999-11-10 2001-05-16 Koninklijke Philips Electronics N.V. Estimation de phase en présence d'écart de fréquence résiduel
DE10001854A1 (de) * 2000-01-18 2001-08-02 Infineon Technologies Ag Verfahren und Vorrichtung zur Ermittlung der Trägerfrequenz von Basisstationen im mobilen Empfänger eines mit W-CDMA arbeitenden zellularen Mobilfunksystems
WO2002009382A1 (en) * 2000-07-25 2002-01-31 Koninklijke Philips Electronics N.V. Decision directed frequency offset estimation
JP3866908B2 (ja) * 2000-07-31 2007-01-10 三菱電機株式会社 無線通信用受信装置
US7609777B2 (en) * 2002-08-30 2009-10-27 Alcatel-Lucent Usa Inc. Maximum likelihood a posteriori probability detector
US7822150B2 (en) * 2003-03-15 2010-10-26 Alcatel-Lucent Usa Inc. Spherical decoder for wireless communications
US7298806B1 (en) * 2004-01-15 2007-11-20 Hellosoft Inc. Method and system for data-aided timing offset estimation for frequency selective fading channels
US8130726B2 (en) * 2005-12-20 2012-03-06 Qualcomm Incorporated Coarse bin frequency synchronization in a communication system
KR101421406B1 (ko) * 2008-02-01 2014-07-23 성균관대학교산학협력단 광대역 무선접속 통신 시스템에서 주파수 동기를 위한 상관장치 및 방법
US9277519B1 (en) * 2015-03-13 2016-03-01 Intel IP Corporation Method for performing mobile communications and mobile terminal device
RU2633148C2 (ru) * 2016-02-01 2017-10-11 Акционерное общество "Калужский научно-исследовательский институт телемеханических устройств" Способ кодовой цикловой синхронизации для каскадного кода при применении жестких решений
CN107787038A (zh) * 2016-08-26 2018-03-09 山东数智体育科技股份有限公司 一种频率校正的方法
US11011227B2 (en) * 2018-06-15 2021-05-18 Arm Ltd. Method, system and device for non-volatile memory device operation
RU2759801C1 (ru) * 2021-03-22 2021-11-18 Акционерное общество "Калужский научно-исследовательский институт телемеханических устройств" Способ кодовой цикловой синхронизации для каскадного кода при применении жестких решений

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* Cited by examiner, † Cited by third party
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US5233632A (en) * 1991-05-10 1993-08-03 Motorola, Inc. Communication system receiver apparatus and method for fast carrier acquisition
US5177740A (en) * 1991-09-03 1993-01-05 General Electric Company Frame/slot synchronization for U.S. digital cellular TDMA radio telephone system
US5276706A (en) 1992-05-20 1994-01-04 Hughes Aircraft Company System and method for minimizing frequency offsets between digital communication stations
US5282227A (en) 1992-05-21 1994-01-25 The Titan Corporation Communication signal detection and acquisition
US5428647A (en) * 1992-12-07 1995-06-27 Motorola, Inc. Method and apparatus for synchronizing a received signal in a digital radio communication system
US5343498A (en) * 1993-03-08 1994-08-30 General Electric Company Sample timing selection and frequency offset correction for U.S. digital cellular mobile receivers
US5361276A (en) 1993-09-13 1994-11-01 At&T Bell Laboratories All digital maximum likelihood based spread spectrum receiver
US5608763A (en) * 1993-12-30 1997-03-04 Motorola, Inc. Method and apparatus for decoding a radio frequency signal containing a sequence of phase values
US5625573A (en) 1995-03-01 1997-04-29 Hughes Electronics Fast acquisition of GMSK-modulated signal for CDPD applications
US5802117A (en) * 1996-02-08 1998-09-01 Philips Electronics North America Corporation Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system
US5910945A (en) * 1996-04-30 1999-06-08 Trw Inc. Method and apparatus for synchronizing communications in a satellite based telecommunications system

Also Published As

Publication number Publication date
AU5877298A (en) 1998-09-08
WO1998036580A2 (en) 1998-08-20
WO1998036580A3 (en) 1998-11-19
IL120210A0 (en) 1997-06-10
US6400784B1 (en) 2002-06-04
EP0960498A4 (en) 2002-06-12
IL120210A (en) 1999-12-31
EP0960498A2 (en) 1999-12-01
US6301317B1 (en) 2001-10-09
CA2280689A1 (en) 1998-08-20

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Legal Events

Date Code Title Description
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 1891 DE 03/04/2007.