Mobile Position Estimation Using Received Signal Strength and Time of Arrival in Mixed LOS/NLOS Environments

In order to increase the time‐of‐arrival (TOA) estimation accuracy, it is often useful to exploit additional information, such as path attenuation or path loss, which can in principle be observed from the received signal strength (RSS). This chapter investigates the TOA estimation techniques for the hybrid RSS‐TOA localization in mixed line‐of‐sight (LOS)/non‐line‐of‐sight (NLOS) environments. It describes how the number of TOA measurements should be selected to reduce computation complexity while improving the localization performance. The chapter shows how to determine a mobile position from such sufficient TOAs while the error performance attains certain performance bounds. The results shared in the chapter help a system designer select the number of nodes that should be used in the process of localization and NLOS mitigation. The selection is based on a trade‐off between accuracy and computational complexity.