Impact of time reversal on UWB location system or train passenger

This preliminary paper deals with the impact of the Time Reversal (TR) processing on the performance of an Ultra Wide Band (UWB) location system. In a first part, we describe the topology of the UWB location system we have developed. In a second part, we present the enhancement of UWB radio channel characteristics by applying a TR algorithm. We have considered an impulse response of the (UWB) radio channel corresponding to severe propagation conditions: TR signal processing is described and its benefits on the characteristics of the UWB Channel Impulse Response (CIR) are detailed. A third part presents first results on the reduction of the error location due to UWB multipath propagation.