摘要
本文介绍了利用MATLAB来对无线移动信道进行仿真的方法。首先解释移动信号多径传播和因此造成的衰落的基本特性,然后重点对常见的瑞利衰落和莱斯衰落进行仿真。为了对衰落有个直观的表达,在仿真衰落的同时也给出了衰落幅度的分布或概率密度函数。
In this paper, a MATLAB based approach for mobile radio channels modeling is presented. Firstly the paper introduces the basic concepts for multipath propagation and the caused flat fading＇s statistical characteristics. By means of user-defined m files in MATLAB modeling typical flat fading channel such as rician fading channel and rayleigh fading channel are derived, comprising with and without doppler shift. Further, simple and useful MATLAB constructions for approximation of cumulative distribution functions and probability density functions are also given.
出处
《电信工程技术与标准化》
2005年第12期39-42,共4页
Telecom Engineering Technics and Standardization
关键词
多径传播
平坦衰落
瑞利衰落
莱斯衰落
多普勒频移
multipath propagation, flat fading, rayleigh fading, rician fading, doppler frequency shift
