超宽带室内多径信道成簇特性仿真与分析

Simulation and Analysis of UWB Signals Clustering Property of Indoor Multipath Channels

超宽带(UWB)无线信道的成簇特性是UWB信号在室内多径信道中的重要传播特性。在对UWB室内多径信道成簇特性进行分析的基础上,介绍了UWB信道的成簇模型,对UWB信号的基本特征和成簇现象形成的原因及其影响进行分析;采用布朗桥方法对有金属网格玻璃门反射的走廊环境中UWB多径信道的成簇特性进行仿真和分析;将具有成簇现象的UWB信号功率时延谱仿真结果与已公布的测量数据结果进行了比较和验证。为UWB无线信道及其信号传播特性的研究打下较好的基础,具有重要参考价值。

Clustering property in Uhra-wideband （UWB） wireless channels is an important phenomenon for UWB signals during their propagation. Clustering models of UWB channels are introduced in the current research. The fundamental properties of UWB signals are analyzed. The cause of clustering phenomenon and its effect on a receiver are investigated. The clustering property is validated by using a Brownian bridge model of UWB muhipath channels to simulate a corridor environment of two glass doors with metal grid inside. The power delay profile （PDP） with clusters is obtained from simulation, which is similar to results of other experiments. The results of the paper are essentially useful for the research of UWB wireless channels and propagation properties of UWB signals.