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Títol:
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Space-Time diversity for NLOS mitigation in TDOA-based positioning systems
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Autor/a:
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René Jativa, E.; Garzon, Esteban; Vidal Manzano, José
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Altres autors:
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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 |
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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. |
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Abstract:
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Peer Reviewed |
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Matèries:
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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 |
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Drets:
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Tipus de document:
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Article - Versió publicada
Objecte de conferència |
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Publicat per:
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Institute of Electrical and Electronics Engineers (IEEE)
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Compartir:
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