Estudio de disponibilidad de medidas de localización en redes celulares urbanas (On the study of location measurements in urban cellular networks)

Israel Martin-Escalona (imartin@entel.upc.edu), Francisco Barcelo-Arroyo (barcelo@entel.upc.edu)


Departamento de ingeniería telemática, Universidad Politécnica de Cataluña
This paper appears in: Revista IEEE América Latina

Publication Date: Oct. 2007
Volume: 5,   Issue: 6 
ISSN: 1548-0992


Abstract:
This work presents a statistical field study of the availability of time sources used by location techniques in a true wireless network. Terrestrial (base stations) and satellite (GPS) sources were investigated in three different urban scenarios. The density function of a specific number of sources available for triangulation is presented along with other statistical data in order to assess coverage. Since the fusion of terrestrial and satellite sources to obtain the location in wireless networks has been proposed as a way of improving coverage, the joint density function and cross-correlation between the availability of both types of sources are also presented. This correlation depends on the scenario, leading to the conclusion that the improvement obtained through the fusion of sources depends on both the fusion type and the scenario.

Index Terms:
Sistema de Posicionamiento Global, A-GPS, E-OTD, disponibilidad, técnicas híbridas de localización, satélite, Estación Base.   


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