Path loss and delay spread in UWB channels

This work presents an analysis of a UWB measurement campaign. Results focus on the wideband path loss, concluding that frequency dependence and distance dependence can be studied separately. In the case of the frequency dependence, similar results to the theoretical prediction (free space propagation) are found. On the other hand, the slope of the path loss only depends on the environment and not on frequency. We obtain larger values in NLoS than in LoS. Finally, we study the rms delay spread, concluding that it always increases with distance, although a clear frequency behavior is not observed. In LoS scenarios, the slope decreases with frequency while in NLoS it remains constant.