Comtech EF Data CDM-710G Specifikace stáhnout pdf (Strana 240)

CDM-710G High-Speed Satellite Modem Revision 1

Eb/No Measurement MN-CDM710G

B–4

Table B-2. CDM-710G Co+No/No to C/N (Es/No) and Eb/No (dB) for DVB-S2 16APSK and 32APSK

(DVB-S2 uses C/N (Es/No), and Eb/No is shown for information)

Notes:

1. Eb/No = Es/No – 10 Log (Spectral Efficiency).

2. The Required C/N for QEF with FECFrame = 16,200 bits is typically 0.2 to 0.3 dB higher.

3. Shaded values are high error rate or unusable.

16APSK 32APSK

2.637201 2.966728 3.165623 3.300184 3.523143 3.567342 3.703295 3.951571 4.119540 4.397854 4.453027

2/3 3/4 4/5 5/6 8/9 9/10 3/4 4/5 5/6 8/9 9/10

(Co+No)/No C/N = Es/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No Eb/No

9.0 8.4 4.2 3.7 3.4 3.2 2.9 2.9 2.7 2.4 2.3 2.0 1.9

9.5 9.0 4.8 4.3 4.0 3.8 3.5 3.5 3.3 3.0 2.8 2.6 2.5

10.0 9.5 5.3 4.8 4.5 4.4 4.1 4.0 3.9 3.6 3.4 3.1 3.1

10.5 10.1 5.9 5.4 5.1 4.9 4.6 4.6 4.4 4.1 3.9 3.7 3.6

11.0 10.6 6.4 5.9 5.6 5.5 5.2 5.1 5.0 4.7 4.5 4.2 4.2

11.5 11.2 7.0 6.5 6.2 6.0 5.7 5.7 5.5 5.2 5.0 4.7 4.7

12.0 11.7 7.5 7.0 6.7 6.5 6.2 6.2 6.0 5.7 5.6 5.3 5.2

12.5 12.2 8.0 7.5 7.2 7.1 6.8 6.7 6.6 6.3 6.1 5.8 5.8

13.0 12.8 8.6 8.1 7.8 7.6 7.3 7.3 7.1 6.8 6.6 6.3 6.3

13.5 13.3 9.1 8.6 8.3 8.1 7.8 7.8 7.6 7.3 7.2 6.9 6.8

14.0 13.8 9.6 9.1 8.8 8.6 8.4 8.3 8.1 7.9 7.7 7.4 7.3

14.5 14.3 10.1 9.6 9.3 9.2 8.9 8.8 8.7 8.4 8.2 7.9 7.9

15.0 14.9 10.6 10.1 9.9 9.7 9.4 9.3 9.2 8.9 8.7 8.4 8.4

15.5 15.4 11.2 10.7 10.4 10.2 9.9 9.9 9.7 9.4 9.2 8.9 8.9

16.0 15.9 11.7 11.2 10.9 10.7 10.4 10.4 10.2 9.9 9.7 9.5 9.4

16.5 16.4 12.2 11.7 11.4 11.2 10.9 10.9 10.7 10.4 10.3 10.0 9.9

17.0 16.9 12.7 12.2 11.9 11.7 11.4 11.4 11.2 10.9 10.8 10.5 10.4

17.5 17.4 13.2 12.7 12.4 12.2 12.0 11.9 11.7 11.5 11.3 11.0 10.9

18.0 17.9 13.7 13.2 12.9 12.7 12.5 12.4 12.2 12.0 11.8 11.5 11.4

18.5 18.4 14.2 13.7 13.4 13.3 13.0 12.9 12.8 12.5 12.3 12.0 12.0

19.0 18.9 14.7 14.2 13.9 13.8 13.5 13.4 13.3 13.0 12.8 12.5 12.5

19.5 19.5 15.2 14.7 14.4 14.3 14.0 13.9 13.8 13.5 13.3 13.0 13.0

20.0 20.0 15.7 15.2 15.0 14.8 14.5 14.4 14.3 14.0 13.8 13.5 13.5

20.5 20.5 16.2 15.7 15.5 15.3 15.0 14.9 14.8 14.5 14.3 14.0 14.0

21.0 21.0 16.8 16.2 16.0 15.8 15.5 15.4 15.3 15.0 14.8 14.5 14.5

21.5 21.5 17.3 16.7 16.5 16.3 16.0 15.9 15.8 15.5 15.3 15.0 15.0

22.0 22.0 17.8 17.2 17.0 16.8 16.5 16.4 16.3 16.0 15.8 15.5 15.5

22.5 22.5 18.3 17.8 17.5 17.3 17.0 17.0 16.8 16.5 16.3 16.0 16.0

23.0 23.0 18.8 18.3 18.0 17.8 17.5 17.5 17.3 17.0 16.8 16.5 16.5

23.5 23.5 19.3 18.8 18.5 18.3 18.0 18.0 17.8 17.5 17.3 17.0 17.0

24.0 24.0 19.8 19.3 19.0 18.8 18.5 18.5 18.3 18.0 17.8 17.6 17.5

24.5 24.5 20.3 19.8 19.5 19.3 19.0 19.0 18.8 18.5 18.3 18.1 18.0

25.0 25.0 20.8 20.3 20.0 19.8 19.5 19.5 19.3 19.0 18.8 18.6 18.5

25.5 25.5 21.3 20.8 20.5 20.3 20.0 20.0 19.8 19.5 19.3 19.1 19.0

26.0 26.0 21.8 21.3 21.0 20.8 20.5 20.5 20.3 20.0 19.8 19.6 19.5

Spectral Efficiency

Code Rate

1 2 ... 235 236 237 238 239 240 241 242 243 244 245 246

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