physical significance of power spectral density

What is the physical significance of power spectral density?

If it represents power content in a given frequency, then its integration over frequency must give the 'total' power of the signal and not the 'average' power of the signal.

Am I right when I say this?

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  • vishnu tej
    vishnu tej

    @vishnu-tej-RDU9r1 • May 29, 2015

    According to Nyquist rate, Carrier frequency must be greater than or equal to twice the message signal frequency.
    A one-sided PSD contains the total power of the signal in the frequency interval from DC to half of the Nyquist rate. A two-sided PSD contains the total power in the frequency interval from DC to the Nyquist rate.

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