随机桥过程分析街道拐角的无线传播特性

Applications of Stochastic Bridge Processes for Analyzing the Characteristics of Propagation in Street Corner Environment

使用随机桥过程研究街道拐角的小尺度衰落和大尺度传播的特性。首先介绍模型,随机桥过程的理论基础,从随机桥过程引入随机射线的概念,利用随机射线建立无线信道分析街道拐角的多径传播特性和大尺度传播特性。然后给出信道的时延分布、多径分量的幅度特性、功率延迟分布,接收机接收波的到达角分布等多径特性参数,并给出路径损耗。仿真结果与参考文献中无线信道测量结果吻合较好,表明使用随机桥过程可以有效地分析街道拐角的无线传播特性。

Stochastic bridge processes are employed to analyze the characteristics of small scale fading and large scale path loss propagation in the wireless environment with the street corner. The theory of these processes and then stochastic rays are introduced. These rays are used to model the wireless environment and analyze the characteristics of multipath and path loss propagation. Then the paper discusses the excess time delay of the channel, the amplitude of the multipath components, the power delay profile of the channel, the angle of arriving to the receiver, and the path loss. The agreement between the simulated data and reference experimental results show that the method proposed in the paper is correct and effective.