中文说明：在移动无线信道中，瑞利分布是最常见的用于描述平坦衰落信号接收包络或独立多径分量接收包络统计时变特性的一种分布类型，众所周知，两个正交高斯噪声信号之和的包络服从瑞丽分布。所以根据相关模型，编写程序代码，实现瑞利分布特性，由概率密度函数和累积分布函数来描述。
English Description：
In mobile radio channel in the Rayleigh distribution is most commonly used to describe flat envelope or independent Multipath Fading signals received envelope statistics received time-varying characteristics of a type, we all know that sum of two orthogonal Gaussian noise signal envelope follow Ruili distribution. Therefore, in accordance with the relevant model, you write programming code, implementation of a Rayleigh distribution feature, described by the probability density functions and cumulative distribution functions.