The mean square power of the power spectral density given

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The mean square power of the power spectral density given is R_x(τ)—

1. NB
2. 1
  NB
3. NB cos 2πBτ
4. 1 cos 2πBτ
  NB

Correct Option: A

The mean square power,
R_x(0) = NB sin c 2πBτ

= NB	sin 2πBτ
	2πBτ

= NB	cos 2πBτ.2πB	⎪_{τ = 0}
	2πB

= NB.