(Solved):
The DFT matrix given in Figure Q2(c) uses twiddle factors (wmk) to compute the 4-point DFT values, ...
The DFT matrix given in Figure Q2(c) uses twiddle factors (wmk) to compute the 4-point DFT values, X[k], of the discrete sequence, x[n]. X = wkn x = N : x[0] = X[0] X[1] X[2] X[3] WA WA WAO WA WA W41 W22 W3 WA W 2 W44 W28 WO W3 WAS W29 x[1] 6 x[2] X[3] Figure Q2 (C) Compute the discrete sequence x[n] whose DFT values are X[k] = [3, 5 + j4, -5, 5 – j4]. =