Full Member level 5
I've been going throught the concepts of Energy Spectrum Density and Power Spectrum Density. It seems that ESD is used incase of energy type signals and PSD is used for power type signals. Given that all practical signals are of energy type, ESD should have been used for their analysis. But I see that in almost all cases of communication signal analysis, PSD is used. Like we discuss about PSD of line coding wave forms, PSD of band pass signals? So where does ESD stand? Why are we using PSD for practical signals??