Table 8 Energy per FFT
From: Low power reconfigurable FP-FFT core with an array of folded DA butterflies
FFT size ( N) | Execution time (μs) | Energy per FFT (nJ) |
|---|---|---|
64 | 7.64 | 7.43 |
128 | 17.84 | 8.79 |
256 | 40.92 | 10.18 |
512 | 92.48 | 11.60 |
1,024 | 206.44 | 13.01 |
2,048 | 456.08 | 14.44 |