Channel Capacity Matlab

[CAROLEbecks]

Hello everyone,
I have this little task to do and I need your help. I have to plot the capacity of an AWGN channel and a fading channel in function of the SNR. The code must be written in Matlab.
Can someone please give me some hints of how to get started, what the input of the channel should be, etc..

I really appreciate your help and many thanks in advance.

Carole

 

[zorro]

Hi carole,

I guess you must simply plot the functions given by theory, i.e. C=B*log2(1+SNR) for AWGN. Right?
Or you want to get some experimental results?
Regards

Z

 

[CAROLEbecks]

Hi carole,

I guess you must simply plot the functions given by theory, i.e. C=B*log2(1+SNR) for AWGN. Right?
Or you want to get some experimental results?
Regards

Z

Hey Z , thx for takin time to reply well yes I know that this is the formula I should use, but I just need the matlab code. I mean what should the input be? A QAm constellation for example? If so, how to code it? I'm not really gifted in matlab so I just need sone help to get started. Thank you so much

Carole

 

[wave1]

Hi,
you don't need an input to plot the capacity according to this formula. You can plot the normalized capacity C/B [Bit/Sec/Hz]
which is C_norm = log2(1+SNR)
and all you have to do is set a vector of SNR values and plot this.