How many Complex Multiplications are required to find DFT of N =32 point sequence.Select one:102440324096
Question
How many Complex Multiplications are required to find DFT of N = 32 point sequence?
Select one:
1024
40320
96
Solution
To find the DFT of a 32-point sequence, we can use the formula:
DFT(x[k]) = Σ(x[n] * e^(-j * 2π * k * n / N))
where x[k] represents the input sequence, n represents the sample index, k represents the frequency index, and N is the total number of points in the sequence.
In this case, N = 32. To calculate the DFT, we need to perform complex multiplications for each frequency index k and sample index n.
The number of complex multiplications required can be calculated using the formula:
Number of complex multiplications = N * log2(N)
In this case, N = 32, so the number of complex multiplications required is:
Number of complex multiplications = 32 * log2(32)
Calculating this value, we get:
Number of complex multiplications = 32 * 5
Number of complex multiplications = 160
Therefore, the number of complex multiplications required to find the DFT of a 32-point sequence is 160.
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