Topic: Electronics Engineering
How many adders are required to realize a 256 point radix-2 FFT using decimation-in time?
- A. 256
- B. 1024
- C. 4096
- D. 2048
Answer: D. 2048
Explanation: No. of adders = N-point x number of stages. Here 256-point = $2^{8}$. Number of adders $= 256 \times 8 = 2048$.