The impact of mobility users on DS-UWB system performance

Ultra wideband (UWB) technology is defined by the Federal Communications Commission as any wireless transmission scheme occupying a fractional bandwidth ges20% . Such ultra-wide bandwidth gives rise to important differences between UWB and narrowband channels, especially with respect to the number of resolvable paths and arrival times of multipath components. One of most promising UWB technique is direct-sequence spreading based UWB (DS-UWB). Many works, have already investigated the performance of DS-UWB system under multipath fading channel, but no work has actually considered the impact of mobility on these systems. However, it is very important to model an indoor environment mobility and to analyze bit error rate (BER) in order to investigate the effect of movements of users in indoor network. Therefore, our main contribution is to consider the impact of users mobility on the DS-UWB system performance.