BR0215940A - Método para sincronização fina de um receptor de telecomunicação digital, e, receptor de comunicação digital - Google Patents

Método para sincronização fina de um receptor de telecomunicação digital, e, receptor de comunicação digital

Info

Publication number
BR0215940A
BR0215940A BR0215940-6A BR0215940A BR0215940A BR 0215940 A BR0215940 A BR 0215940A BR 0215940 A BR0215940 A BR 0215940A BR 0215940 A BR0215940 A BR 0215940A
Authority
BR
Brazil
Prior art keywords
interpolated
signal
sample
interpolation
digitally controlled
Prior art date
Application number
BR0215940-6A
Other languages
English (en)
Inventor
Donato Ettorre
Maurizio Graziano
Bruno Melis
Andrea Finotello
Alfredo Ruscitto
Original Assignee
Telecom Italia Spa
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 Telecom Italia Spa filed Critical Telecom Italia Spa
Publication of BR0215940A publication Critical patent/BR0215940A/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
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked loop
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70757—Synchronisation aspects with code phase acquisition with increased resolution, i.e. higher than half a chip

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)

Abstract

"MéTODO PARA SINCRONIZAçãO FINA DE UM RECEPTOR DE TELECOMUNICAçãO DIGITAL, E, RECEPTOR DE COMUNICAçãO DIGITAL". Um método para a sincronização de um receptor de telecomunicação digital inclui as etapas de: armazenar uma pluralidade de amostras consecutivas E-1, E, M, L, L+1 de um sinal de espectro espalhado entrante em uma linha de retardo 56; determinar através de interpolação entre amostras consecutivas do sinal de espectro espalhado entrante, por meio de um primeiro interpolador digitalmente controlado 26, uma amostra antecipada interpolada (e) antecipando um instante de tempo de amostragem ótima; determinar através de interpolação entre amostras consecutivas do sinal de espectro espalhado entrante, por meio de um segundo interpolador digitalmente controlado 24, uma amostra mediana interpolada (m) correspondendo ao instante de tempo de amostragem ótima; determinar através de interpolação entre amostras consecutivas do sinal de espectro espalhado entrante, por meio de um terceiro interpolador digitalmente controlado 28, uma amostra tardia interpolada (1) atrasada com respeito ao instante de tempo de amostragem ótima; calcular um sinal de erro <sym> como a diferença entre a energia dos símbolos computados da amostra antecipada interpolada (e) e a amostra tardia interpolada (1); extrair o sinal do sinal de erro <sym> acumulando o sinal do sinal de erro <sym> para a geração de sinais de controle S~ E~, S~ M~, S~ L~ para controlar as fases de interpolação dos interpoladores digitalmente controlados usados para determinar as amostras interpoladas antecipada (e), mediana (m) e tardia (1). O valor acumulado tem um valor de saturação positivo de +4 e um valor de saturação negativo de -4.
BR0215940-6A 2002-11-15 2002-11-15 Método para sincronização fina de um receptor de telecomunicação digital, e, receptor de comunicação digital BR0215940A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2002/012813 WO2004047326A1 (en) 2002-11-15 2002-11-15 Method and device for fine synchronization of a digital telecommunication receiver

Publications (1)

Publication Number Publication Date
BR0215940A true BR0215940A (pt) 2005-09-06

Family

ID=32319522

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0215940-6A BR0215940A (pt) 2002-11-15 2002-11-15 Método para sincronização fina de um receptor de telecomunicação digital, e, receptor de comunicação digital

Country Status (8)

Country Link
US (1) US7471754B2 (pt)
EP (1) EP1561286B1 (pt)
JP (1) JP4169352B2 (pt)
CN (1) CN100420162C (pt)
AU (1) AU2002352019A1 (pt)
BR (1) BR0215940A (pt)
CA (1) CA2519395A1 (pt)
WO (1) WO2004047326A1 (pt)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100438399C (zh) * 2005-06-02 2008-11-26 北京天碁科技有限公司 定时跟踪装置,接收装置,定时跟踪和调整方法
SG130041A1 (en) * 2005-08-12 2007-03-20 Nanyang Polytechnic Fast symbol synchronizer
GB2449932A (en) * 2007-06-08 2008-12-10 Tandberg Television Asa Timestamp conversion using samples
US20130142057A1 (en) * 2011-12-01 2013-06-06 Broadcom Corporation Control Channel Acquisition
WO2013088529A1 (ja) * 2011-12-14 2013-06-20 古野電気株式会社 Ｇｎｓｓ信号処理方法、測位方法、ｇｎｓｓ信号処理プログラム、測位プログラム、ｇｎｓｓ信号処理装置、測位装置、および、移動端末
US9891323B2 (en) * 2011-12-14 2018-02-13 Furuno Electric Co., Ltd. GNSS signal processing method, positioning method, GNSS signal processing program, positioning program, GNSS signal processing device, positioning apparatus and mobile terminal
CN105049080B (zh) * 2015-08-25 2017-11-28 四川九洲电器集团有限责任公司 一种基于自适应门限的扩频同步方法及装置

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5493588A (en) 1992-01-22 1996-02-20 Trimble Navigation Limited Multipath compensation for code phase signals
FR2742612B1 (fr) * 1995-12-15 1998-02-06 Sextant Avionique Procede et circuit de reception de signaux de positionnement par satellites avec elimination des erreurs de multitrajets
JPH1141141A (ja) * 1997-05-21 1999-02-12 Mitsubishi Electric Corp スペクトル拡散信号受信方法及びスペクトル拡散信号受信装置
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
US6201828B1 (en) * 1998-11-12 2001-03-13 Nortel Networks Limited Fine estimation of multipath delays in spread-spectrum signals
CN1110162C (zh) * 1999-11-10 2003-05-28 深圳市中兴通讯股份有限公司 一种宽带码分多址系统的pn码精确同步的方法及装置
US7372892B2 (en) * 2002-04-29 2008-05-13 Interdigital Technology Corporation Simple and robust digital code tracking loop for wireless communication systems
US7206335B2 (en) * 2002-10-02 2007-04-17 Interdigital Technology Corporation Optimum interpolator method and apparatus for digital timing adjustment

Also Published As

Publication number Publication date
EP1561286A1 (en) 2005-08-10
JP2006506863A (ja) 2006-02-23
AU2002352019A1 (en) 2004-06-15
US20060133460A1 (en) 2006-06-22
JP4169352B2 (ja) 2008-10-22
CA2519395A1 (en) 2004-06-03
EP1561286B1 (en) 2013-04-10
AU2002352019A8 (en) 2004-06-15
US7471754B2 (en) 2008-12-30
WO2004047326A1 (en) 2004-06-03
CN100420162C (zh) 2008-09-17
CN1695315A (zh) 2005-11-09

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 3O ANUIDADE.

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 DA RPI 2038 DE 26/01/2010.