Tuesday, March 6, 2012

Homework - 10

Find the Discrete Fourier Transform of the following sequences :
Assume N = 4 and the samples taken for a duration T = 2pi
1.  x[k] = {1, 1, 0, 0}.
     Ans :  {2, 1-j, 0, 1+j}

2. x[k] = {1, 2, 1, 2}
    Ans :  {6, 0, -2, 0}

3. x[k] = {6, 0, -2, 0}
    Ans : {4, 8, 4, 8}

4. x[k] = {4, 8, 4, 8}
    Ans : {24, 0, -8, 0}

Good Day

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