摘要
MIMO已成为B3G/4G移动通信系统中的一项关键技术。基于径方法的SCM信道模型能很好的反映MIMO信道的实时变化特性,可用于B3G/4G系统的链路级仿真,具有一定应用价值。本文通过简要分析SCM信道模型的基本原理,重点研究了3种场景下基于径方法的信道建模并进行了仿真。结果表明:不存在直视径时SCM信道各主径包络服从瑞利分布,而存在直视径时则服从莱斯分布,完全符合实际信道特征。
MIMO has been a key technology of the B3G/4G mobile communication system. SCM channel model based on paths can reflect the real time various speciality of MIMO channel, it can used in link level simulations of the B3G/4G system and owns some application value. This paper firstly analysed the basic theory of SCM channel model, secondly researched the ways of building chan- nel models based on paths in three cases and then realized simulations. Numerical simulations show that the envelope of SCM chan- nels＇ main paths is rayleigh distribution when there is no path of LOS and rice distribution when there is path of LOS, which is up to the real channel speciality.
出处
《微计算机信息》
2012年第10期340-341,377,共3页
Control & Automation
