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In this paper, the characteristics of ultrawideband (UWB) channels on outdoor roadway and indoor parking environments are investigated. A set of propagation measurements were conducted on roadways and in underground parking garages, and the resulting propagation data consist of approximately 1200 measured signals. Multipath properties are characterized using tapped-delay-line and Saleh-Valenzuela...
The presence of a line-of-sight (LoS) blockage is one of the major causes of error for ultra-wideband (UWB) localization. LoS blockage degrades the accuracy of the time of arrival (ToA) estimation of the direct path signal by making the multipath structure complex. Furthermore, propagation through the obstructing material introduces excess propagation delay, which causes ranging errors. In this paper,...
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