New algorithms for NLOS Identification

A major concern of cellular and PCS-based wireless location systems is the effect of the harsh propagation environment, particularly non-line-of-sight (NLOS) propagation. In order to improve location accuracy under such conditions, many NLOS mitigation algorithms utilize the knowledge of wether the base station (BS)mobile station (MS) path is line-of-sight (LOS) or non-line-of-sight (NLOS). In this paper we present four algorithms that utilize the received power envelope characteristics to to perform the NLOS identification.

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