BR0009344A - Filtro casado buscador programável - Google Patents

Filtro casado buscador programável

Info

Publication number
BR0009344A
BR0009344A BR0009344-0A BR0009344A BR0009344A BR 0009344 A BR0009344 A BR 0009344A BR 0009344 A BR0009344 A BR 0009344A BR 0009344 A BR0009344 A BR 0009344A
Authority
BR
Brazil
Prior art keywords
programmable
filter
married
energy measurement
seeker
Prior art date
Application number
BR0009344-0A
Other languages
English (en)
Inventor
Avneesh Agrawal
Quizhen Zou
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BR0009344A publication Critical patent/BR0009344A/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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70758—Multimode search, i.e. using multiple search strategies
    • 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
    • H04B1/7093—Matched filter type
    • 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
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • H04B1/70775—Multi-dwell schemes, i.e. multiple accumulation times
    • 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
    • H04B1/708—Parallel implementation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70707—Efficiency-related aspects
    • H04B2201/7071—Efficiency-related aspects with dynamic control of receiver resources

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)

Abstract

"FILTRO CASADO BUSCADOR PROGRAMáVEL". São descritos um método e um equipamento novos e aperfeiçoados para busca. Dados de canal são desespalhados utilizando-se uma estrutura de filtro casado. As amplitudes em fase e em quadratura do desespalhamento (410) levadas aos acumuladores coerentes (430 , 432) para soma por uma duração de tempo programável. As acumulações de amplitude são elevadas ao quadrado e somadas (440) para produzir uma medição de energia. A medição de energia é acumulada por um segundo tempo programável para efetuar acumulação não coerente (450). O valor resultante é usado para determinar a probabilidade de um sinal piloto com tal offset. Cada estrutura de filtro casado compreende um registrador de deslocamento de valor N para recepção de dados, um banco programável de saídas (taps) para efetuar o desespalhamento (despreading) e decodificação Walsh opcional, e uma estrutura de adicionador para somar os cálculos de saída de filtro resultantes.
BR0009344-0A 1999-03-31 2000-03-30 Filtro casado buscador programável BR0009344A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/283,010 US6363108B1 (en) 1999-03-31 1999-03-31 Programmable matched filter searcher
PCT/US2000/040075 WO2000059123A1 (en) 1999-03-31 2000-03-30 Programmable matched filter searcher

Publications (1)

Publication Number Publication Date
BR0009344A true BR0009344A (pt) 2002-12-31

Family

ID=23084101

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0009344-0A BR0009344A (pt) 1999-03-31 2000-03-30 Filtro casado buscador programável

Country Status (12)

Country Link
US (1) US6363108B1 (pt)
EP (1) EP1163731A1 (pt)
JP (1) JP2002540714A (pt)
KR (1) KR100736986B1 (pt)
CN (1) CN1280996C (pt)
AU (1) AU767051B2 (pt)
BR (1) BR0009344A (pt)
CA (1) CA2368982A1 (pt)
HK (1) HK1044239B (pt)
IL (2) IL145488A0 (pt)
MX (1) MXPA01009715A (pt)
WO (1) WO2000059123A1 (pt)

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US9020756B2 (en) * 1999-04-23 2015-04-28 Global Locate, Inc. Method and apparatus for processing satellite positioning system signals
FI119011B (fi) * 1999-10-13 2008-06-13 U Nav Microelectronics Corp Sovitettu suodatin ja hajaspektrivastaanotin
AU2466001A (en) * 1999-12-30 2001-07-16 Morphics Technology, Inc. A configurable all-digital coherent demodulator system for spread spectrum applications
WO2001050646A1 (en) * 1999-12-30 2001-07-12 Morphics Technology, Inc. A configurable multimode despreader for spread spectrum applications
US7103095B2 (en) * 2000-03-06 2006-09-05 Texas Instruments Incorporated Spread spectrum code correlator
US7224719B1 (en) * 2000-03-31 2007-05-29 Qualcomm, Incorporated Fast acquisition of a pilot signal in a wireless communication device
WO2001089085A1 (fr) * 2000-05-16 2001-11-22 Yozan Inc. Filtre adapte
JP2001345738A (ja) * 2000-06-06 2001-12-14 Sony Corp 同期検出装置
US6466958B1 (en) * 2000-09-12 2002-10-15 Interstate Electronics Corporation, A Division Of L3 Communications Corporation Parallel frequency searching in an acquisition correlator
JP2002217787A (ja) * 2000-11-17 2002-08-02 Hitachi Kokusai Electric Inc ディジタルフィルタ
US6985516B1 (en) 2000-11-27 2006-01-10 Qualcomm Incorporated Method and apparatus for processing a received signal in a communications system
US6909736B2 (en) * 2000-12-14 2005-06-21 Nokia Corporation System for method for fine acquisition of a spread spectrum signal
KR100488078B1 (ko) 2000-12-21 2005-05-09 엘지전자 주식회사 이동 통신 시스템 수신단의 파일럿 신호 검색기 및 방법
US6580746B2 (en) 2001-04-09 2003-06-17 Qualcomm Incorporated System and method for acquiring a received signal in a spread spectrum device
US7209461B2 (en) 2001-05-09 2007-04-24 Qualcomm Incorporated Method and apparatus for chip-rate processing in a CDMA system
US8098716B2 (en) * 2001-05-18 2012-01-17 Broadcom Corporation Method and apparatus for providing an energy-based signal tracking loop
US7995682B2 (en) 2001-05-18 2011-08-09 Broadcom Corporation Method and apparatus for performing signal processing using historical correlation data
US6819707B2 (en) * 2001-05-18 2004-11-16 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7769076B2 (en) * 2001-05-18 2010-08-03 Broadcom Corporation Method and apparatus for performing frequency synchronization
US7190712B2 (en) 2001-05-18 2007-03-13 Global Locate, Inc Method and apparatus for performing signal correlation
US7567636B2 (en) * 2001-05-18 2009-07-28 Global Locate, Inc. Method and apparatus for performing signal correlation using historical correlation data
US7006556B2 (en) 2001-05-18 2006-02-28 Global Locate, Inc. Method and apparatus for performing signal correlation at multiple resolutions to mitigate multipath interference
CN100483955C (zh) * 2001-05-21 2009-04-29 高通股份有限公司 每次搜索扫掠期间搜索扩频系统中所接收信号的搜索系统
US7042968B1 (en) * 2001-09-12 2006-05-09 Nokia Corporation Efficient multipurpose code matched filter for wideband CDMA
US7092429B1 (en) 2001-09-26 2006-08-15 Interstate Electronics Corporation Multi-pass frequency hop-acquisition correlator
US7756085B2 (en) * 2001-11-20 2010-07-13 Qualcomm Incorporated Steps one and three W-CDMA and multi-mode searching
US6771693B2 (en) 2001-12-27 2004-08-03 Interdigital Technology Corporation Enhanced rake structure
US7738533B2 (en) * 2002-01-07 2010-06-15 Qualcomm Incorporated Multiplexed CDMA and GPS searching
US7215935B2 (en) * 2002-01-17 2007-05-08 Qualcomm Incorporated Segmented CDMA searching
KR100431083B1 (ko) * 2002-01-25 2004-05-12 한국전자통신연구원 구간 검색기 및 그의 구동 방법과 이를 이용한 코드 검색기
US7061971B2 (en) * 2002-07-11 2006-06-13 Qualcomm Incorporated Method and apparatus for diversity searching and demodulator assignment in a wireless communication system
US20040024802A1 (en) * 2002-08-05 2004-02-05 Khan Raheel Ahmed High-performance programmable processing element for GF (2N)
WO2004021608A1 (en) * 2002-08-30 2004-03-11 Koninklijke Philips Electronics N.V. Initial synchronization device and method
US20040062298A1 (en) * 2002-10-01 2004-04-01 Mcdonough John G. System and method for detecting direct sequence spread spectrum signals using pipelined vector processing
KR100546318B1 (ko) * 2003-02-22 2006-01-26 삼성전자주식회사 서로 다른 통신모드를 지원하는 듀얼 모드 모뎀의 통합 셀탐색기
US7236517B2 (en) * 2003-05-19 2007-06-26 L3 Communications Corp. Method for determining the spreading sequence of a spread spectrum signal
US7298777B2 (en) * 2003-06-06 2007-11-20 Texas Instruments Incorporated Searching in a spread spectrum communications
FR2877803B1 (fr) * 2004-11-05 2007-04-20 Thales Sa Procede et dispositif de reception d'un signal de radionavigation degrade
US7864832B2 (en) * 2005-05-06 2011-01-04 Samsung Electronics Co., Ltd. Multi-code correlation architecture for use in software-defined radio systems
US20100330940A1 (en) * 2006-10-31 2010-12-30 Qualcomm Incorporated Sensor-aided wireless combining
KR101301418B1 (ko) * 2006-10-31 2013-08-28 퀄컴 인코포레이티드 센서-기반 무선 수신 다이버시티를 위한 장치 및 방법
KR101043689B1 (ko) 2007-10-29 2011-06-24 주식회사 텔에이스 Ｇｐｓ를 위한 초기 동기 신호의 획득 방법 및 장치
US8228971B2 (en) * 2008-07-29 2012-07-24 Agere Systems Inc. Technique for searching for a preamble signal in a spread spectrum signal using a fast Hadamard transform
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CN101860485B (zh) * 2010-06-02 2012-04-11 上海融亿信息技术有限公司 一种网络报文过滤引擎芯片
US9031118B2 (en) * 2012-05-21 2015-05-12 Avidyne Corporation Virtual floating correlators for GPS sensor
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JP2675965B2 (ja) * 1992-06-29 1997-11-12 三菱電機株式会社 スペクトル拡散通信用受信装置のサーチャーレシーバ
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US5577025A (en) * 1995-06-30 1996-11-19 Qualcomm Incorporated Signal acquisition in a multi-user communication system using multiple walsh channels
US5715276A (en) * 1996-08-22 1998-02-03 Golden Bridge Technology, Inc. Symbol-matched filter having a low silicon and power requirement
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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

Also Published As

Publication number Publication date
CA2368982A1 (en) 2000-10-05
US6363108B1 (en) 2002-03-26
KR20010108418A (ko) 2001-12-07
HK1044239A1 (en) 2002-10-11
WO2000059123A1 (en) 2000-10-05
MXPA01009715A (es) 2002-09-30
AU4251400A (en) 2000-10-16
HK1044239B (zh) 2007-03-30
EP1163731A1 (en) 2001-12-19
AU767051B2 (en) 2003-10-30
CN1354916A (zh) 2002-06-19
KR100736986B1 (ko) 2007-07-09
IL145488A (en) 2007-02-11
CN1280996C (zh) 2006-10-18
IL145488A0 (en) 2002-06-30
JP2002540714A (ja) 2002-11-26

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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(S) 11A ANUIDADE(S).

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 2112 DE 28/06/2011.