Hi Aly,
Using Communications Toolbox, you can implement fading channels using objects or blocks.
Please refer to the following documentation for more info on how to implement Fading channels like the Rayleigh fading channel:-
For example, this command creates a channel object representing a Rayleigh fading channel that acts on a signal sampled at 100,000 Hz. The maximum Doppler shift of the channel is 130 Hz.
rayChan1 = comm.RayleighChannel('SampleRate',1e5,'MaximumDopplerShift',130); % Rayleigh fading channel object
To learn how to call the rayChan1 fading channel object to filter the transmitted signal through the channel, see Using Fading Channels.
