Table 2 Comparison of three algorithms (iterative process stops at third iteration)
SNR | Algorithm | Δf l (input frequency generated randomly per cycle, which are listed for the first 10 cycles, Hz) | Total MSE | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||
|  |  | 0 (60) | 0 (60) | 5 (65) | − 3 (57) | 2 (62) | − 2 (58) | − 2 (58) | 4 (64) | 0 (60) | 1 (61) |  |
20 dB | DFT iteration aided by AES | 60.0333 | 58.4136 | 64.0000 | 57.9770 | 60.6543 | 57.1513 | 57.5411 | 63.5073 | 58.9226 | 61.1667 | 1.9778 |
DFT iteration | 59.2771 | 58.7789 | 65.5311 | 57.7068 | 60.6949 | 56.6914 | 57.1799 | 64.4430 | 59.3222 | 62.5303 | 1.4521 | |
Variable sampling measurement [31] | 57.4167 | 62.9167 | 62.7500 | 60.3333 | 61.0000 | 58.4167 | 60.2500 | 64.8333 | 55.7500 | 61.8333 | 5.5808 | |
15 dB |  | 3 (63) | 2 (62) | 5 (65) | − 3 (57) | 4 (64) | 0 (60) | 2 (62) | − 4 (56) | − 3 (57) | 5 (65) |  |
DFT iteration aided by AES | 64.0144 | 60.2727 | 62.6321 | 55.2965 | 60.7808 | 58.0518 | 65.3453 | 57.9144 | 58.0186 | 64.9271 | 3.8810 | |
DFT iteration | 63.6640 | 61.2829 | 57.7354 | 56.3717 | 65.5300 | 57.5044 | 62.4709 | 55.4884 | 56.9142 | 60.9407 | 3.6784 | |
Variable sampling measurement [31] | 58.2500 | 61.0833 | 64.0000 | 60.2500 | 62.0833 | 51.5167 | 60.0000 | 51.6667 | 58.8333 | 68.9167 | 10.9262 | |