Efficient ray tracing tool for UWB propagation and localization modeling

Ray tracing simulators show higher accuracy in modeling propagation of radio waves. This RT based modeling has been used for designing wireless communications systems. Recently, these RT tools have been applied for the designing of localization techniques and systems. This paper regards the application of ray tracing tools in radio propagation modeling for ultra wide band localization applications. A graph-based ray tracing technique is presented and used to simulate an indoor environment. The obtained simulations are then post processed in order to extract location-dependent parameters such as RSSI and TOA and compare them to real measurements carried out in the same environment. The outcome of this comparison is a good match between simulations and measurements even without considering pieces of furniture presented in the environment during the measurement campaign.