中文摘要：

能量消耗、能量效率和网络容量是衡量传感器网络性能的重要指标。本文在分析基于超宽带技术的无线传感器网络节点能耗的基础上,对采用多跳通信方式的传感器节点进行建模与分析,并得出使得数据传输能耗最小的最优传感器节点间间距。最后本文针对超宽带技术提出了网络容量分析模型。仿真结果表明,在多跳通信方式下网络业务负载模式和传感器节点分布密度对传感器节点的能耗和能量效率都有着较大的影响且网络容量并非随着并行通信的传感器节点对数的增大而线性增大。

英文摘要：

Energy consumption,energy efficiency and networks capacity are the key measurement indices for network performance.Based on the analysis of the energy consumption at sensor nodes,the energy consum-ption model and energy efficiency model under the multi-hop communication mode,and the analysis model for network capacity have been proposed for UWB based WSNs.The simulation results show that energy consumption and energy efficiency are seriously influenced by the network loads mode and sensor node distribution density,and network capacity will not linearly increase with the increase of the number of the nodes,which are in the concurrent communication status.