Comparison of Pulse Repetition and Cyclic Prefix Communication Techniques for Impulse Radio UWB Systems

In this paper, the performance of two different communication techniques for impulse radio UWB systems is compared: the techniques are based on the pulse repetition according to the spreading factor value and the cyclic prefix insertion. Since both techniques cause a throughput loss, they have to be compared both in terms of performance and capacity, i.e. the maximum data rate which is afforded. Different scenarios are taken into account: in an indoor short-range environment an access point communicates with several mobile terminals by transmitting low or high data-rate flows with variable system loads. Alternative detection strategies are considered, aiming at highlighting the most suitable approach.