How many complex multiplications are need to be performed for each FFT algorithm?Select one:a. (N/2)log2Nb. Nlog2Nc. None of the mentionedd. (N/2)logN
Question
How many complex multiplications are need to be performed for each FFT algorithm?Select one:a. (N/2)log2Nb. Nlog2Nc. None of the mentionedd. (N/2)logN
Solution
To determine the number of complex multiplications needed for each FFT algorithm, we can consider the options provided:
a. (N/2)log2N b. Nlog2N c. None of the mentioned d. (N/2)logN
The correct answer is b. Nlog2N. This means that for each FFT algorithm, N complex multiplications are required, where N is the size of the input sequence, multiplied by log2N.
Therefore, the number of complex multiplications needed for each FFT algorithm is Nlog2N.
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