
Implementation  Logic usage  Memory usage  Multipliers usage 
(ALM)  (M20K)  (DSP blocks) 

3FFT solution (Figure 5(a))    
Total  8760  1824  38 

5FFT solution (Figure 6)    
Total  8274  792  38 
Difference with 3FFT solution  −486 (−5.5%)  −1032 (−56.6%)  0 

Proposed 9FFT solution (Figure 7)    
Total  8805  484  46 
Difference with 3FFT solution  +45 (+0.5%)  −1340 (−73.5%)  +8 (+21.1%) 
Difference with 5FFT solution  +531 (+6.4%)  −308 (−38.9%)  +8 (+21.1%) 

Proposed 15FFT solution    
Total  8645  286  52 
Difference with 3FFT solution  −115 (−1.3%)  −1538 (−84.3%)  +14 (+36.8%) 
Difference with 5FFT solution  +371 (+4.5%)  −506 (−63.9%)  +14 (+36.8%) 
