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Localization of a source signal in the presence of multipath propagation is addressed in this letter. This problem is often encountered in environments such as urban areas and indoor corridors.… Click to show full abstract
Localization of a source signal in the presence of multipath propagation is addressed in this letter. This problem is often encountered in environments such as urban areas and indoor corridors. A 3-D positioning algorithm is presented. It uses the azimuth direction-of-arrival (azimuth-DOA), elevation-DOA and time-of-arrival (TOA) data, measured by a base station (BS). By applying virtual station (VS) technique, the non-line-of-sight (NLOS) paths, caused by multipath reflection, are converted into line-of-sight (LOS) paths. After that, a two-step weighted least squares (WLS) 3-D positioning algorithm is derived. Performance analysis is conducted by comparing the algorithm’s mean-squared-error (MSE) and the optimal Cramér-Rao bound (CRB). Simulation results are finally provided to verify the mathematical analysis.
Journal Title: IEEE Communications Letters
Year Published: 2021
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