Table 2 LDPC decoding time (second) versus SNR value (CMMB 1/2, frame 10,000)
SNR | CUDA & OpenMP | Normal | Only OpenMP | Avg. iter. num |
|---|---|---|---|---|
1.5 | 29.6 | 656.4 | 198.7 | 18.0 |
2 | 18.0 | 354.9 | 112.5 | 10.3 |
2.5 | 14.2 | 248.6 | 81.0 | 7.5 |
3 | 12.0 | 189.3 | 64.3 | 5.9 |
3.5 | 10.6 | 150.6 | 60.1 | 4.9 |
4 | 9.6 | 122.6 | 42.6 | 4.1 |
4.5 | 8.7 | 100.2 | 35.9 | 3.4 |
5 | 8.2 | 85.5 | 31.3 | 3.0 |
5.5 | 7.5 | 71.0 | 26.9 | 2.6 |
6 | 6.9 | 59.8 | 23.4 | 2.2 |