Fading (Signal)

The received signal from a signal

$$f_r(t)={\mathcal{F}}^{-1}(\mathcal{F}(f(t))\ast h(v))+AWGN$$

Where $h(v)$ is the transfer function for the enviroment, $f(t)$ is the transmitted signal, AWGN, and finally $f_r(t)$ is the received signal