Title:
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Space-Time diversity for NLOS mitigation in TDOA-based positioning systems
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Author:
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René Jativa, E.; Garzon, Esteban; Vidal Manzano, José
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Other authors:
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Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions |
Abstract:
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This paper studies the potential impact of using space-Time information in the mitigation of the Non-LineOf-Sight condition in mobile subscriber's positioning systems. First of all, this work discusses the positioning problem based on measures of Time Differences Of Arrival departing from a more exact characterization of the signal statistics and including some geometrical restrictions to achieve an improved accurate. Furthermore, a novel approach that integrates signal propagation characteristics to information provided by a suitable timing estimation model based on Cramer Rao Bound for a Rayleigh-fading channel, when antenna arrays are used at the receiver and when a set ofchannel vector estimates are available, has been introduced to study the positive benefits of space-Time diversity. These approaches are evaluated within a realistic simulation scenario. |
Abstract:
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Peer Reviewed |
Subject(s):
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-Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal -Wireless communication systems -Antenna arrays -Antennas -Codes (symbols) -Fading channels -Radio communication -Rayleigh fading -Signal receivers -Time difference of arrival -Tracking (position) -Vector spaces -Wireless sensor networks -Cramer-rao bound (CRB) -geometrical restrictions -Nlos mitigations -Positioning system -WLLS -Comunicació sense fil, Sistemes de |
Rights:
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Document type:
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Article - Published version Conference Object |
Published by:
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Institute of Electrical and Electronics Engineers (IEEE)
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