CA2640761C - Procede et appareil pour la recherche d'espaces de code dans un recepteur - Google Patents

Procede et appareil pour la recherche d'espaces de code dans un recepteur Download PDF

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Publication number
CA2640761C
CA2640761C CA2640761A CA2640761A CA2640761C CA 2640761 C CA2640761 C CA 2640761C CA 2640761 A CA2640761 A CA 2640761A CA 2640761 A CA2640761 A CA 2640761A CA 2640761 C CA2640761 C CA 2640761C
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CA
Canada
Prior art keywords
coherent
integration
searcher
code space
code
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CA2640761A
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English (en)
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CA2640761A1 (fr
Inventor
Douglas Grover
Christopher Patrick
Kai Tang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
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 CA2640761A1 publication Critical patent/CA2640761A1/fr
Application granted granted Critical
Publication of CA2640761C publication Critical patent/CA2640761C/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • 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
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/24—Acquisition or tracking or demodulation of signals transmitted by the system
    • G01S19/30—Acquisition or tracking or demodulation of signals transmitted by the system code related
    • 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
    • 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)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)

Abstract

L'invention concerne un appareil et des procédés de mise en AEuvre d'une recherche d'espaces de code de signaux reçus. Une recherche d'espaces de code est mise en AEuvre sous la forme d'un dispositif de recherche (220) qui effectue une sous-tâche pouvant être reconfigurée dynamiquement à chaque limite d'un temps d'intégration initiale. Chaque sous-tâche particulière présente une configuration programmable d'hypothèses d'intégration cohérente qui sont effectuées pendant le temps d'intégration initiale. Le dispositif de recherche stocke les résultats des hypothèses d'intégration cohérente dans une première partie de mémoire. Un accélérateur de recherche (250) intervient sur les résultats d'intégration initiale. L'accélérateur de recherche peut effectuer une intégration cohérente de diverses cellules de fréquence des différentes hypothèses de synchronisation, générer des valeurs d'énergie des résultats d'intégration cohérente et générer une addition d'énergie non cohérente. Les valeurs d'énergie des intégrations cohérente et des additions d'énergie non cohérentes sont stockées dans une seconde partie de mémoire. La capacité à reconfigurer les sous-tâches et le fonctionnement de l'accélérateur permettent d'obtenir une flexibilité dans la recherche de dimensions d'espaces.
CA2640761A 2006-03-02 2007-03-02 Procede et appareil pour la recherche d'espaces de code dans un recepteur Active CA2640761C (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US77917206P 2006-03-02 2006-03-02
US60/779,172 2006-03-02
US88532307P 2007-01-17 2007-01-17
US60/885,323 2007-01-17
PCT/US2007/063225 WO2007120995A1 (fr) 2006-03-02 2007-03-02 Procédé et appareil pour la recherche d'espaces de code dans un récepteur

Publications (2)

Publication Number Publication Date
CA2640761A1 CA2640761A1 (fr) 2007-10-25
CA2640761C true CA2640761C (fr) 2014-09-30

Family

ID=38609838

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2640761A Active CA2640761C (fr) 2006-03-02 2007-03-02 Procede et appareil pour la recherche d'espaces de code dans un recepteur

Country Status (11)

Country Link
EP (1) EP1992080A1 (fr)
JP (1) JP5295788B2 (fr)
KR (1) KR101147942B1 (fr)
CN (1) CN101395814B (fr)
AU (1) AU2007238489A1 (fr)
BR (1) BRPI0708489A2 (fr)
CA (1) CA2640761C (fr)
IL (1) IL193093A0 (fr)
MX (1) MX2008010827A (fr)
TW (1) TWI370627B (fr)
WO (1) WO2007120995A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI426397B (zh) * 2009-06-29 2014-02-11 Lee Ming Inst Technology Can be used in a signal interval in the unequal spacing of the sample, the signal in this interval between a single and multiple numerical integration device.
EP2326022A1 (fr) * 2009-11-23 2011-05-25 Nxp B.V. Dispositif d'acquisition de signal de dispersion spectrale
JP5549471B2 (ja) * 2010-08-09 2014-07-16 株式会社デンソー 受信機
US8792438B2 (en) * 2010-10-07 2014-07-29 Futurewei Technologies, Inc. System and method for search space reconfiguration in a communications system
KR101440692B1 (ko) * 2012-05-31 2014-09-15 한국과학기술원 Ｇｎｒｓｓ 대역확산 신호의 신속한 신호 획득 및 강건한 추적을 위한 ２차원 압축 상관기
US10111248B2 (en) * 2012-06-29 2018-10-23 Blackberry Limited Method and system for cross-subframe scheduling during carrier aggregation
US9107159B2 (en) 2013-06-07 2015-08-11 Apple Inc. Enhancing jitter buffer performance through radio level feedback
DE102016109342B4 (de) 2016-05-20 2024-02-22 Infineon Technologies Ag Radarsensorsystem zur gestenerkennung und verfahren zur radarbasierten gestenerkennung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6603803B1 (en) * 1999-03-12 2003-08-05 Navcom Technology, Inc. Global positioning system receiver for monitoring the satellite transmissions and for reducing the effects of multipath error on coded signals and carrier phase measurements
FI19992653A (fi) * 1999-12-09 2001-06-10 Nokia Mobile Phones Ltd Menetelmä vastaanottimen tahdistamiseksi ja vastaanotin
GB0126325D0 (en) * 2001-11-02 2002-01-02 Koninl Philips Electronics Nv Method and apparatus for spread spectrum signal acquisition
GB0130804D0 (en) * 2001-12-22 2002-02-06 Koninkl Philips Electronics Nv Method and apparatus for signal receipt and acquisition
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
EP1680686A1 (fr) * 2003-09-02 2006-07-19 Sirf Technology, Inc. Systeme de traitement de signaux de positionnement de satellites
US7702002B2 (en) * 2004-01-28 2010-04-20 Qualcomm Incorporated Rapid acquisition methods and apparatus for GPS signals
US7471717B2 (en) * 2004-05-17 2008-12-30 Yi Ping Huang Apparatus and method for acquiring spread-spectrum signals
EP1801991A3 (fr) * 2005-12-21 2008-08-20 Nemerix SA Utilisation optimale des ressources pour processeurs de signaux

Also Published As

Publication number Publication date
TWI370627B (en) 2012-08-11
CN101395814B (zh) 2013-02-06
MX2008010827A (es) 2008-09-05
TW200805908A (en) 2008-01-16
AU2007238489A1 (en) 2007-10-25
IL193093A0 (en) 2009-02-11
KR20080100840A (ko) 2008-11-19
CA2640761A1 (fr) 2007-10-25
WO2007120995A1 (fr) 2007-10-25
KR101147942B1 (ko) 2012-05-24
JP2009535605A (ja) 2009-10-01
EP1992080A1 (fr) 2008-11-19
BRPI0708489A2 (pt) 2011-05-31
JP5295788B2 (ja) 2013-09-18
CN101395814A (zh) 2009-03-25

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