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BR0213695A - Estimador de parâmetro para um receptor cdma com uma janela de busca de tamanho variável e/ou localização - Google Patents

Estimador de parâmetro para um receptor cdma com uma janela de busca de tamanho variável e/ou localização

Info

Publication number
BR0213695A
BR0213695A BR0213695-3A BR0213695A BR0213695A BR 0213695 A BR0213695 A BR 0213695A BR 0213695 A BR0213695 A BR 0213695A BR 0213695 A BR0213695 A BR 0213695A
Authority
BR
Brazil
Prior art keywords
location
parameter estimator
search window
cdma receiver
variable size
Prior art date
Application number
BR0213695-3A
Other languages
English (en)
Inventor
Roland R Rick
Borislav Ristic
Messay Amerga
Jeremy M Stein
Ivan Jesus Fernandez-Corbaton
Ashok Bhatia
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 BR0213695A publication Critical patent/BR0213695A/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
    • H04B1/709—Correlator structure
    • 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
    • H04B1/70754—Setting of search window, i.e. range of code offsets to be searched
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0221—Receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

"ESTIMADOR DE PARâMETRO PARA UM RECEPTOR CDMA COM UMA JANELA DE BUSCA DE TAMANHO E/OU LOCALIZAçãO". Um estimador de parâmetros para estimar um ou mais parâmetro(s) a partir de uma função de correlação obtida de um sinal, utilizando uma janela de busca dinamicamente variável, é descrito. O estimador de parâmetros pode ser empregado em uma estação assinante para estimar o tempo de chegada de sinais-piloto de estações base em um sistema de comunicação sem fio. Esta informação pode ser utilizada em um processo de trilateração de link de emissão avançado (AFLT) total para estimar a localização da estação assinante.
BR0213695-3A 2001-10-29 2002-10-25 Estimador de parâmetro para um receptor cdma com uma janela de busca de tamanho variável e/ou localização BR0213695A (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US33618701P 2001-10-29 2001-10-29
US10/056,877 US6738438B2 (en) 2001-10-29 2002-01-24 Parameter estimator with dynamically variable search window size and/or placement
PCT/US2002/034326 WO2003039020A1 (en) 2001-10-29 2002-10-25 Parameter estimator for a cdma receiver with a search window of variable size and/or placement

Publications (1)

Publication Number Publication Date
BR0213695A true BR0213695A (pt) 2004-12-28

Family

ID=26735807

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0213695-3A BR0213695A (pt) 2001-10-29 2002-10-25 Estimador de parâmetro para um receptor cdma com uma janela de busca de tamanho variável e/ou localização

Country Status (5)

Country Link
US (1) US6738438B2 (pt)
KR (1) KR100960544B1 (pt)
BR (1) BR0213695A (pt)
IL (2) IL161643A0 (pt)
WO (1) WO2003039020A1 (pt)

Families Citing this family (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3838877B2 (ja) * 2001-01-15 2006-10-25 日本電気株式会社 パスサーチを行うｃｄｍａ受信装置、パスサーチ方法、及びプログラム
US7729412B2 (en) * 2001-10-29 2010-06-01 Qualcomm Incorporated Parameter estimator with dynamically variable integration time
US7308022B2 (en) * 2001-11-01 2007-12-11 Rick Roland R Parameter estimator configured to distinguish between peaks and sidelobes of correlation function
US7558534B2 (en) 2001-11-02 2009-07-07 Qualcomm Incorporated Reliability metrics for parameter estimates which account for cumulative error
US7474994B2 (en) * 2001-12-14 2009-01-06 Qualcomm Incorporated System and method for wireless signal time of arrival
US7392045B2 (en) * 2002-01-15 2008-06-24 Marvell International Ltd. Method and apparatus for searching for a base station using an adaptable search window
US7203499B2 (en) * 2002-05-16 2007-04-10 Telefonaktiebolaget Lm Ericsson (Publ) Position determination in wireless communication systems
US7676232B2 (en) * 2002-05-16 2010-03-09 Telefonaktiebolaget Lm Ericsson (Publ) Altitude determination and distribution in cellular communication systems
US7362799B1 (en) * 2002-06-27 2008-04-22 Arraycomm Llc Method and apparatus for communication signal resolution
US20040105512A1 (en) * 2002-12-02 2004-06-03 Nokia Corporation Two step synchronization procedure for orthogonal frequency division multiplexing (OFDM) receivers
AU2003293212A1 (en) * 2003-04-14 2004-11-19 Bae Systems Information And Electronic Systems Integration Inc. Joint symbol, amplitude, and rate estimator
US7236517B2 (en) * 2003-05-19 2007-06-26 L3 Communications Corp. Method for determining the spreading sequence of a spread spectrum signal
US7672404B2 (en) * 2003-05-19 2010-03-02 Broadcom Corporation Method and apparatus for reducing the time required to acquire a GPS signal
AU2004202550A1 (en) * 2003-06-18 2005-01-13 Nec Australia Pty Ltd Cell search process for wireless communication system
US7369534B2 (en) * 2003-08-27 2008-05-06 Qualcomm Incorporated Reducing search time using known scrambling code offsets
US7362792B2 (en) * 2004-01-12 2008-04-22 Telefonaktiebolaget Lm Ericsson (Publ) Method of and apparatus for computation of unbiased power delay profile
US6917904B1 (en) 2004-01-12 2005-07-12 Telefonaktiebolaget L M Ericsson (Publ) Method of and apparatus for path-searcher window positioning
US7395074B2 (en) 2004-04-08 2008-07-01 Nokia Corporation Position detection with frequency smoothing
US7590165B2 (en) * 2005-07-08 2009-09-15 Industrial Technology Research Institute Sub-system based window placement and size decision mechanism and method thereof
CN1897472B (zh) * 2005-07-13 2010-05-05 财团法人工业技术研究院 无线通讯系统时序搜索区间的区间位置及大小的调整方法
KR100742784B1 (ko) * 2006-04-05 2007-07-25 주식회사 팬택앤큐리텔 무선환경에 따라 파일럿 탐색 윈도우 크기 설정이 가능한이동통신 단말기 및 그 방법
JP4904929B2 (ja) * 2006-05-31 2012-03-28 富士通セミコンダクター株式会社 Ｏｆｄｍ受信機、妨害波判別方法、窓制御装置、及び窓制御方法
US7574221B2 (en) * 2006-08-03 2009-08-11 Ntt Docomo, Inc. Method for estimating jointly time-of-arrival of signals and terminal location
US8094702B2 (en) * 2008-04-28 2012-01-10 Qualcomm Incorporated System and/or method for detecting multi-tone jamming
EP2148214B1 (en) * 2008-07-24 2011-09-14 SES Astra S.A. Spacecraft position estimating system and method
US8073463B2 (en) * 2008-10-06 2011-12-06 Andrew, Llc System and method of UMTS UE location using uplink dedicated physical control channel and downlink synchronization channel
US8331327B1 (en) 2009-08-04 2012-12-11 Sprint Communications Company L.P. Dynamic wireless network registration window
US8599749B2 (en) * 2009-08-20 2013-12-03 Qualcomm Incorporated Apparatus and method of searching multi-carrier active set pilots
US8224320B1 (en) * 2009-08-25 2012-07-17 Sprint Spectrum L.P. Using RF conditions and handoff state to dynamically adjust a search window size
US8761765B1 (en) * 2010-01-13 2014-06-24 Sprint Spectrum L.P. Utilizing one or more search windows to capture both an earliest-received signal and a strongest received signal
WO2011100859A1 (en) * 2010-02-19 2011-08-25 Telefonaktiebolaget L M Ericsson (Publ) Improvements on otdoa and agnss positioning and timing information obtaining and updating
US20130144865A1 (en) * 2011-12-06 2013-06-06 Martina Rothley Managing electronic procurement transactions using an optimized search tool
US20130260752A1 (en) * 2012-03-30 2013-10-03 Qualcomm Incorporated System and methods for dynamically configurig cell search window for pilot acquisition
US9798010B2 (en) * 2012-07-31 2017-10-24 Qualcomm Incorporated Devices, methods, and apparatuses for mobile device acquisition assistance
EP3143707B1 (en) 2014-05-14 2020-04-22 Satixfy Israel Ltd. A method of exchanging communications between a satellite and terminals associated therewith
US10368327B2 (en) * 2014-05-14 2019-07-30 Satixfy Israel Ltd. Method and system for signal communications
WO2015177779A1 (en) 2014-05-20 2015-11-26 Satixfy Ltd. A method for reducing interference in a satellite communications network
US10033509B2 (en) 2014-05-20 2018-07-24 Satixfy Israel Ltd. Method and system for satellite communication
CN111158029A (zh) * 2018-11-07 2020-05-15 北京金坤科创技术有限公司 一种定位设备的自适应可变搜索捕获窗长动态调整方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE277458T1 (de) 1994-07-29 2004-10-15 Qualcomm Inc Verfahren und gerät zum ausführen der kodeerfassung in einem cdma übertragungssystem
US5790589A (en) 1996-08-14 1998-08-04 Qualcomm Incorporated System and method for rapidly reacquiring a pilot channel
JP3693083B2 (ja) * 1997-07-02 2005-09-07 ソニー株式会社 受信装置、受信方法
US5872774A (en) 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
US7085246B1 (en) 1999-05-19 2006-08-01 Motorola, Inc. Method and apparatus for acquisition of a spread-spectrum signal
US6351486B1 (en) * 1999-05-25 2002-02-26 Conexant Systems, Inc. Accelerated selection of a base station in a wireless communication system
US6324210B1 (en) * 1999-12-17 2001-11-27 Golden Bridge Technology Incorporated Sliding matched filter with flexible hardware complexity

Also Published As

Publication number Publication date
KR100960544B1 (ko) 2010-06-03
IL161643A0 (en) 2004-09-27
WO2003039020A1 (en) 2003-05-08
US6738438B2 (en) 2004-05-18
IL161643A (en) 2009-12-24
KR20040068543A (ko) 2004-07-31
US20030086512A1 (en) 2003-05-08

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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 13A 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: EM VIRTUDE DO ARQUIVAMENTO PUBLICADO NA RPI 2329 DE 25-08-2015 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDO O ARQUIVAMENTO DO PEDIDO DE PATENTE, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.