Table 2.

Performance of different methods.

Methods	Sparse ratio (%)	Type	Time consuming (s)	Reconstruction accuracy (%)
CoSaMP	6.25	Compressed sensing	3.85 ± 0.04	3.64
IHT	6.25	Compressed sensing	0.20 ± 0.01	10.83
IRLS	6.25	Compressed sensing	2.41 ± 0.03	62.07
SP	6.25	Compressed sensing	0.56 ± 0.02	71.91
DISP	6.25	Distributed down-sampling	0.24 ± 0.01	100
CoSaMP	25	Compressed sensing	54.50 ± 0.5	19.41
IHT	25	Compressed sensing	0.96 ± 0.02	55.38
IRLS	25	Compressed sensing	23.89 ± 0.1	85.92
SP	25	Compressed sensing	3.96 ± 0.04	86.45
DISP	25	Distributed down-sampling	0.25 ± 0.01	100