This shows how a pure frequency e.g. a pure sinusoid, which is an impulse in the frequency domain is spread out across frequency when it passes through the channel.

 
  • 不过,在有些情况下,研究者只对幅度的波动感兴趣。针对这种情况,有两种方法可以仿真产生瑞利衰落信道。这两种方法的目的是产生一个信号,有着上文所示的多普勒功率谱或者等效的自相关函数。
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