Título:
|
Space-Time diversity for NLOS mitigation in TDOA-based positioning systems
|
Autor/a:
|
René Jativa, E.; Garzon, Esteban; Vidal Manzano, José
|
Otros autores:
|
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:
|
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:
|
Peer Reviewed |
Materia(s):
|
-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 |
Derechos:
|
|
Tipo de documento:
|
Artículo - Versión publicada Objeto de conferencia |
Editor:
|
Institute of Electrical and Electronics Engineers (IEEE)
|
Compartir:
|
|