Generate a white Gaussian noise vector

hi

i wish anyone can help me .. i have this quastion to solve:

Generate a white Gaussian noise vector ,,
Note that the Signal-to-Noise Ratio in dB is SNR = 10*log10(Ps/Pn)), with Ps the power of the signal and Pn the power of the noise.

any help is appreciated ..

Answer 1

[venkat vasu]

y = wgn(m,n,p); generates an m-by-n matrix of white Gaussian noise. p specifies the power of y in decibels relative to a watt. The default load impedance is 1 ohm. Example:

y2 = wgn(100,1,0,'complex');