
Q. Consider a white Gaussian noise process ๐(๐ก) with two-sided power spectral density ๐๐ (๐) = 0.5 W/Hz as input to a filter with impulse response 0.5๐โ๐ก2/2 (where ๐ก is in seconds) resulting in output ๐(๐ก). The power in ๐(๐ก) in watts is
(A) 0.11 (B) 0.22 (C) 0.33 (D) 0.44
Ans: 0.22