rayleigh fading channel generator

This function generates normalized rayleigh samples based on Inverse DFT

Description

The IDFT method is accurate than other methods for generation of rayleigh fading channel. This method used in this function.

• Required Products: Signal Processing Toolbox
• MATLAB release: MATLAB 7.2 (R2006a)

[yang lin]

thank you very much

[Mohammad Abdul Awal]

helpful.
I think the code has little bug. It does not work if we set doppler shift (fd) is very small.
I made a small correction, and it works fine for me. just add one line.

fM=fd/fs; %normalized doppler shift
NfM=fftSize*fM;
kM=floor(NfM); %maximum freq of doppler filter in FFT samples

if (kM < 1) kM = 1; end % newly added line

% rest of the code
% ...

I am not sure though why it is like this, as I am not expert in channel analysis.

[Daniel ¬]

thank you!!

[ryan]

Thanks.

I have a question about the "sampling frequency(Hz)" in the codes: how to choose the value? According to the carrier frequency or others?

BR,