psd of any signal

2014 3 31
2 个回答
更新时间：2021 8 20
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0 个投票

How to find psd of any signal and I want the data as frequency(rad/sec) vs power

回答（2 个）

Carlos
Carlos 2014-3-31

0 个投票

Try something like this
N = length(x);
xfft = fft(x);
psdx = (1/(2*pi*N)).*abs(xfft).^2;
freq = 0:(2*pi)/N:2*pi-(2*pi)/N;
plot(freq./pi,10*log10(psdx)); grid on;

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