Research Article

High-Level Synthesis under Fixed-Point Accuracy Constraint

Table 3

Area reduction obtained after several iterations compared to the first iteration. Mean and maximal values obtained for different accuracy and timing constraints

Application 𝑙 m i n (ns) 𝜆 m i n (dB) Area Reduction
MeanMax

FIR 32-taps [ 1 0 0 , 2 0 0 ] [ 3 0 , 1 0 0 ] 18% 35%
FFT radi-2, DIF, 8 points [ 8 0 , 5 0 0 ] [ 3 0 , 1 0 0 ] 28% 50%
IIR 8th- 𝑜 𝑟 𝑑 𝑒 𝑟 [ 5 0 , 1 0 0 ] [ 3 0 , 1 0 0 ] 22% 47%
Complex correlator [ 7 0 , 2 5 0 ] [ 1 0 , 1 0 0 ] 10% 20%