陆地高速移动环境下电波多径传播中径数分布模型改进

In this paper, a new simulation model are proposed for the path-number distribution for multi-path propagation in land high-speed locomotive environment. Markovian birth-and-death process is considered for the instantaneous path-number variation, involving the factor of speed. A path-number distribution for the multipath propagation in land high speed mobile communications is derived. Theoretical values of the present model agree well with experimental results. The dynamic variation of path number with the mobile station moving is simulated , and both the method and results are presented. This results show the speed is the most important variable, and the method in this paper is better than the other methods.