中文说明： 衰落信道参数包括多径扩展和多普勒扩展。时不变的多径扩展相当于一个延时抽头滤波器，而多普勒扩展要注意多普勒功率谱密度，通常使用Jakes功率谱、高斯、均匀功率谱。多径衰落信道由单径信道叠加而成，而单径信道中最重要的就是瑞利（Rayleigh）平坦衰落信道。下面给出的是瑞利平坦衰落信道的改进Jakes模型的实现。
English Description：
Fading channel parameters including the multipath and Doppler extensions extension. Time-invariant multi-path extensions of a delay-tap filter, and Doppler Extensions be aware Doppler power spectral density, typically using Jakes, Gaussian, uniform power spectral power spectrum. Multipath Fading channel formed by the channel stack, and the most important is the single-channel Riley (Rayleigh) flat fading channel. Given below is a modified Jakes model Rayleigh flat-fading channel implementations.