white gaussian noise

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itsik
itsik 2011-6-16
hello to u! i have a problem when i use awgn lets say i have this signal x=cos(2*pi*f*t) and then i do that x_noise=awgn(x,10,0) now 10 means the power of the noise in db and 0 is the power of the original signal? or its oposit? thanks!

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Yella
Yella 2011-6-17
y = awgn(x,snr,sigpower) is the same as the syntax above, except that sigpower is the power of x in dBW.

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