Autocorrelation function of periodic signal is equal to _______(a) Energy of the signal(b) Power of the signal(c) Its area in frequency domain(d) None of the mentionedI had been asked this question in final exam.The above asked question is from Spectral Density and Autocorrelation in section Signals and Spectra of Digital Communications

Autocorrelation function of periodic signal is equal to _______(a) Ene

1.	Autocorrelation function of periodic signal is equal to _______(a) Energy of the signal(b) Power of the signal(c) Its area in frequency domain(d) None of the mentionedI had been asked this question in final exam.The above asked question is from Spectral Density and Autocorrelation in section Signals and Spectra of Digital Communications
Answer» The correct option is (b) POWER of the signal To ELABORATE: AUTOCORRELATION FUNCTION of a real valued signal is EQUAL to the energy of the signal and auto-correlation function of the periodic signal is equal to the average power of the signal.

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