X(t) is a stationary process with the power spectral density Sx(f) > 0 for all f. The process is passed through a system shown below.
Let SY(f) be the power spectral density of Y(t). Which one of the following statements is correct?
A. SY(f) > 0 for all f
B. SY(f) = 0 for |f| > 1 KHz
C. SY(f) = 0 for f = nf0, f0 = 2 kHz, n any integer
D. SY(f) = 0 for f = (2n + 1)f0, f0 = 1 kHz, n any integer
Answer: Option D
This Question Belongs to Electronics And Communications Engineering >> Communication Systems
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