Cross-Layer Optimization Model for UWB Sensor Network

摘要

Cross-layer design is a promising approach to improve the performance of wireless sensor networks. This paper studies an UWB-based wireless sensor networks and builds a cross-layer optimization model with joint consideration of MAC layer scheduling, PHY layer power control and network layer routing. The model takes advantage of significant benefits of UWB technology, such as huge bandwidth, extremely low power spectral density and large processing gain in the presence of interference and attempts to achieve the maximal data rate of whole network. Simulation results show that the optimal solution of cross-layer optimization model can increase the data rate of network obviously. It also demonstrates that it is feasible and effective to address issues of cross-layer problem with optimization model.