Table 24 Performance analysis of the proposed Vaidyanathan 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 | 19 | 1.707644 | 0.0702 | 1.1724 | 1.3812 | 2.912996 |
2048 | 410 | 0.2 | 50 | 1024 | 19 | 3.459463 | 0.0580 | 0.9684 | 0.2785 | 3.332869 |
2048 | 512 | 0.25 | 50 | 1024 | 19 | 5.666164 | 0.0580 | 0.9685 | 0.2782 | 3.036002 |
2048 | 614 | 0.3 | 50 | 1024 | 18 | 5.760958 | 0.0513 | 0.8578 | 1.3320 | 3.034769 |
2048 | 849 | 0.4 | 50 | 1024 | 15 | 7.316646 | 0.0485 | 0.8112 | 1.8177 | 2.969049 |
2048 | 1024 | 0.5 | 50 | 1024 | 14 | 10.855239 | 0.0486 | 0.8123 | 1.8053 | 3.075962 |
2048 | 1229 | 0.6 | 50 | 1024 | 13 | 13.417422 | 0.0474 | 0.7924 | 2.0214 | 3.441779 |
2048 | 1434 | 0.7 | 50 | 1024 | 13 | 19.093624 | 0.0468 | 0.7822 | 2.1339 | 3.483836 |
2048 | 1536 | 0.75 | 50 | 1024 | 12 | 22.608453 | 0.0468 | 0.7816 | 2.1405 | 3.022221 |
2048 | 1638 | 0.8 | 50 | 1024 | 12 | 34.970415 | 0.0468 | 0.7816 | 2.1406 | 3.586396 |
2048 | 1843 | 0.9 | 50 | 1024 | 12 | 49.314450 | 0.0468 | 0.7816 | 2.1407 | 3.515476 |
2048 | 2048 | 1.0 | 50 | 1024 | 9 | 34.943702 | 0.0468 | 0.7815 | 2.1409 | 3.060519 |