Table 15 Performance analysis of the proposed coif5 wavelet based sensing matrix
Length of signal (N) | Number of measurements (m) | Compression ratio (CR = m/N) | Sparsity level = (k/N) × 100 (%) | No. of non-zeros (k) | No. of iterations required | Signal reconstruction time (s) | RMSE | Relative error | SNR (db) | Construction time for sensing matrix (s) |
|---|---|---|---|---|---|---|---|---|---|---|
2048 | 205 | 0.1 | 50 | 1024 | 18 | 1.503436 | 0.0552 | 0.9229 | 0.6966 | 2.866005 |
2048 | 410 | 0.2 | 50 | 1024 | 17 | 2.491811 | 0.0509 | 0.8498 | 1.4132 | 2.895638 |
2048 | 512 | 0.25 | 50 | 1024 | 17 | 3.852817 | 0.0509 | 0.8500 | 1.4114 | 3.007931 |
2048 | 614 | 0.3 | 50 | 1024 | 16 | 4.188601 | 0.0489 | 0.8164 | 1.7616 | 3.009424 |
2048 | 849 | 0.4 | 50 | 1024 | 14 | 5.971268 | 0.0482 | 0.8060 | 1.8737 | 2.845210 |
2048 | 1024 | 0.5 | 50 | 1024 | 14 | 9.498384 | 0.0482 | 0.8058 | 1.8753 | 3.033461 |
2048 | 1229 | 0.6 | 50 | 1024 | 13 | 11.012061 | 0.0472 | 0.7889 | 2.0598 | 3.033341 |
2048 | 1434 | 0.7 | 50 | 1024 | 13 | 14.348884 | 0.0468 | 0.7824 | 2.1313 | 3.105129 |
2048 | 1536 | 0.75 | 50 | 1024 | 12 | 17.088544 | 0.0468 | 0.7816 | 2.1404 | 2.821626 |
2048 | 1638 | 0.8 | 50 | 1024 | 12 | 18.211057 | 0.0468 | 0.7816 | 2.1406 | 3.005033 |
2048 | 1843 | 0.9 | 50 | 1024 | 11 | 20.533120 | 0.0468 | 0.7816 | 2.1406 | 3.095259 |
2048 | 2048 | 1.0 | 50 | 1024 | 9 | 23.047740 | 0.0468 | 0.7815 | 2.1409 | 2.936779 |