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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
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