Performance evaluation of high data rate UWB systems based on IEEE 802.15.3

The performance of an UWB system for high data rate transmissions is evaluated in terms of link outage probability and average aggregate network throughput. The network topology is based on a clustered structure, formed by a multitude of piconets coexisting in a given area. The piconets operate in accordance to the IEEE 802.15.3 standard. Two different modulation formats are considered and their performance compared: multiband OFDM (MBO) and direct sequence spread spectrum (DS-SS). Performance parameters are evaluated using an effective semi-analytical procedure that allows us to account for interference due to uncoordinated piconets in the area in realistic propagation conditions. We show that when the operating band of the MBO is restricted to group A, the DS-SS outperforms the MBO. The situation is reversed when the available bands for the MBO increase.