Rayleigh_f​​ading(100​,​10000,15​0,​3,0.000​000​01) the result become NaN + NaNi

the Matlab function “Rayleigh Fading Channel Simulation” from the Matlab Central. This Matlab function simulates the fading channel when i use Rayleigh_fading(100,10000,150,3,0.00000001) the answer is array of NaN + NaNi i`m using matlab 2013a in other hand when i use matlab 2010 there is answer real and imaginary numbers

[Geoff Hayes]

Salah - what happens when you step through the code with the MATLAB debugger? Can you narrow down at which function call the data becomes NaN?

[salah aldeek]

every thing is OK, until this part of function is played

h=filter(1,[1 AR_parameters.'],wgn(M+KKK,1,10*log10(segma_u),'complex'));

the values become NaN +NaNi

[salah aldeek]

can i change any thing in matlab2013a preference to solve this problem ? i say that because in matlab2010a the same function works and give answer without NaN +NaNi

[Geoff Hayes]

Salah - try an isolate the problem. Is it the

 wgn(M+KKK,1,10*log10(segma_u),'complex')

or the

 filter(1,[1 AR_parameters.'],wgn(M+KKK,1,10*log10(segma_u),'complex'))

that is causing the problem. Unfortunately, I don't have access to these functions so cannot comment on what may be going wrong. Something may have changed in the implementation of these functions since R2010...