Is there any difference in calculation of Energy spectral density and Power spectral density using MATLAB?

Power Spectral Density

PSD=PSD= real(Signal).^2 + imag(Signal).^2;

Where Signal =FFT output

How can I find Energy Spectral Density?

Answer 1

[Image Analyst]

Wouldn't it just be the sqrt(psd)?

By the way, there is a function in the Signal Processing Toolbox to get the PSD:

PSD = pwelch(timeDomainSignal);