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Table 4 LDPC decoding time (second) versus SNR value (DVB-S2 short 2/5, frame 1,000,000)

From: Parallel LDPC decoding using CUDA and OpenMP

SNR

CUDA & OpenMP

Normal

Only OpenMP

Avg. iter. num

1

85.6

2097.5

616.9

26.5

1.5

59.3

1370.2

403.0

17.9

2

47.1

1013.5

307.1

13.5

2.5

40.6

788.0

246.3

107

3

35.3

646.6

208.6

8.8

3.5

30.0

533.9

172.2

7.3

4

27.5

447.9

149.3

6.2

4.5

25.7

382.2

127.4

5.3

5

24.7

325.9

108.6

4.6

5.5

22.3

283.6

97.8

4.0

6

23.6

245.4

87.6

3.5

6.5

21.5

217.6

80.6

3.1