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noise variance of AWGN channel

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trushita

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How i will find the noise variance of AWGN channel? I want to pass my data from AWGN channel to receiver and study the effect of noise on it?
 

If you use MATLAB there is an inbuilt function called 'awgn' u can pass your data and specify the SNR to get the noisy signal.

cheers
 

elecstudward said:
If you use MATLAB there is an inbuilt function called 'awgn' u can pass your data and specify the SNR to get the noisy signal.

cheers
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Thanks for your reply.
I had used the command AWGN in MAtlab alredy. That will only give me noisy data depending on my value of snr. I actually want to find the noise variane of AWGN channel.

Trushita
 

you can find noise variance very easy by using matlab function
var(noise)
 

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