Electronics and Communication Engineering - Exam Questions Papers - Discussion

Discussion Forum : Exam Questions Papers - Exam Paper 11 (Q.No. 31)
31.
{ x(n) } is a real-valued periodic sequence with a period N. x(n) and X(k) form N-point. Discrete Fourier Transform (DFT) pairs. The DFT Y(k) of the sequence. y(n) = x(r) X (n + r) is
|X(k)|2
X(r) X(k + r)
1
0
Answer: Option
Explanation:

Direct property

Convolution in time domain ↔ Multiplication in frequency domain.

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