Mobility

UWB Joint TOA and DOA Estimation

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Executive Summary

This paper deals with the simultaneous estimation of Time Of Arrival (TOA) and Direction Of Arrival (DOA) in UWB systems considering multipath propagation. The estimation is performed in the frequency domain by computing a two dimensional power delay-angle spectrum based on the periodogram because of its low computational complexity. High accuracy is obtained in the estimation of both parameters, TOA and DOA, based on the wide bandwidth of the UWB signals. One interesting problem in wireless communications is the estimation of the angle of incidence and time of arrival of a signal arriving at a base station antenna array, assuming that a specular multipath channel model holds true. This problem has several applications, including, for example, positioning systems.

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