engineering recuitment GATE ECE 2023-24 Test Series Signals and Systems Discrete Fourier Transform (DFT) and Discrete Fourier Series (DFS) Definition of Discrete Fourier Transform (DFT)
Let x(n) be a sequence that is zero outside the interval [0,N-1] with a DFT X(K).
Derive the expression for the DFT of y(n);
If y(n) = x(n) + x(n - N) and choose the correct answer/answers from below.
1
Y(K) = 2X(K) ; for K = odd
2
Y(K) = 0 ; for K = odd
3
Y(K) = 2X(K) ; for K = even
4
Y(K) = X(K) ; for K = even