基于独立阴影的卫星移动通信信道模型及仿真  

Channel model with the independent shadowing fading on the land mobile satellite communications

作　　者：申东娅[1] 刘善根[1] 赵翠芹[1] 贺燕[1] 马咏玲[1] 

机构地区：[1]云南大学信息学院,云南昆明650091

出　　处：《云南大学学报（自然科学版）》2008年第1期16-20,共5页Journal of Yunnan University(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60172006);云南省科技计划项目资助(2003GH09)

摘　　要：信道模型是卫星移动通信系统设计和线路设计的基础.主要研究了陆地卫星移动通信独立阴影衰落信道模型,2个相互独立的对数正态随机过程分别作用于直射信号分量和多径散射信号分量,接收信号包络是一个对数正态分布分量与另外一个对数正态分量与瑞利分量乘积之和.给出了该模型的电平通过率和衰落持续时间.累积分布仿真结果与理论分析计算结果的比较证明了模型的有效性.A channel model to the land mobile satellite communications is described, in which two indepen- dent Log-normal random processes effeeted on the LOS signal and the muhipath signals, respectively. The received signal is the sum of two components, the Lognormal component and the other component, which is the product of the Rayleigh and the second Lognormal. The second order statistic characteristics, level cross ratio and average fading duration, of the model are derived. The consistence of the simulation and the analytical results is showed by the figures.

关 键 词：陆地移动卫星通信 信道模型 电波传播 移动通信 

分 类 号：TN911.7[电子电信—通信与信息系统]