Electronics and Communication Engineering - Exam Questions Papers - Discussion

12. 

If the power spectral density of stationary random process is a sine-squared function of frequency, the shape of its autocorrelation is

[A].
[B].
[C].
[D].

Answer: Option B

Explanation:

Since autocorrelation function and power spectral density bears a Fourier transform relation, then since required in frequency domain will five rectangular convolutions in time domain thus it is triangular function.


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