For DFT sequence X(K)=[7, -8+5i ] i. Find 4-point IDFT using matrix method ii. What is the significance of the term radix-2 DIT in FFT algorithm.
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Given X(K) = [7, -8+5i], we can write the formula for each element of the IDFT sequence: x(0) = (1/4) * (7 * exp(j * 2π * 0 * 0 / 4) + (-8+5i) * exp(j * 2π * 1 * 0 / 4)) = (1/4) * (7 * 1 + (-8+5i) * 1) = (1/4) * (7 - 8 + 5i) = (1/4) * (-1 + 5i) Show more…
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