Hardware Acceleration of Beamforming in a UWB Imaging Unit for Breast Cancer Detection

Table 5

Hardware execution time over 14485 voxels, with 50 antennas and 16 ns clock period, and speed-up with respect to a software execution requiring 𝑇_SW=71 s.

𝑁FIR	𝑁ITER	𝑇exe [s]	Speed-up
1	50	4.48	15.86
2	25	2.89	24.53
3	17	2.38	29.79
4	13	2.13	33.31
5	10	1.94	36.61
6	9	1.88	37.86
7	8	1.81	39.19
8	7	1.75	40.59
9	6	1.68	42.14
10–12	5	1.62	43.81
13–16	4	1.56	45.62
17–24	3	1.49	47.56
25–49	2	1.43	49.71
50	1	1.36	52.05