awgn函数与高斯白噪声

 t = 0:.1:10;
x = t;
y = awgn(x,5); % Add white Gaussian noise.
plot(t,x,t,y) % Plot both signals.

legend('Original signal','Signal with AWGN');

 t = 0:.1:10;
x = t;
y = awgn(x,5,'measured'); % Add white Gaussian noise.
plot(t,x,t,y) % Plot both signals.
legend('Original signal','Signal with AWGN');

注意是否使用'measured'属性，对产生的噪声的影响是很大的。