Topology Generation and Power Assignment in IR-UWB Networks

In this paper, two different power assignment strategies for an ultra-wideband impulse radio (IR-UWB) multi-user system are presented and compared in terms of computational complexity. The algorithms aim at finding the lowest possible transmission power for each node in the network under the constraint that individual QoS demands of all nodes are met. The first direct approach results in a high computational complexity contradicting the intention of building low complexity IR-UWB transceivers. We show how the complexity of the power assignment problem can be substantially lowered by analytical means if the network topology is taken into consideration. Additionally, an algorithm creating the necessary network topology is discussed.