Performance optimization of TH-UWB system in multipath channel

In this paper, we propose a method to minimize the Multi-User Interference (MUI) caused by multiple access (MA) in a Time Hopping Ultra Wide Band (TH-UWB) system with line-of-sight (LOS) multi-path channel in a residential environment IEEE 802.15.4a channel model. We considered synchronous case over an Additive White Gaussian Noise channel (AWGN). The problem is formulated as a combinatorial optimization problem (COP) and solved by means of an efficient optimization method called Guided Local Search (GLS). The optimization criterion is the Average Collision Number (ACN) presented in. The obtained results are validated by simulating the system and computing the Binary Error Rate (BER).