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CDM-750 Advanced High-Speed Trunking Modem
Appendix E
Table E-1. CDM-750 Co+No/No to C/N (Es/No) and Eb/No (dB) for DVB-S2 QPSK and 8PSK
Spectral Efficiency Normal Block
Mode Pilots ON ►
0.478577
0.640827
Code Rate ►
1/4
(Co+No)/No
C/N = Es/No
Eb/No
Eb/No
2.6
-0.9
2.3
2.9
-0.2
3.0
3.2
0.4
3.6
3.5
0.9
4.1
3.8
1.5
4.7
4.1
2.0
5.2
4.4
2.4
5.6
4.7
2.9
6.1
5.0
3.3
6.5
5.3
3.8
7.0
5.6
4.2
7.4
5.9
4.6
7.8
6.2
5.0
8.2
6.5
5.4
8.6
6.8
5.8
9.0
7.1
6.2
9.4
7.4
6.5
9.7
7.7
6.9
10.1
8.0
7.3
10.5
8.3
7.6
10.8
8.6
8.0
11.2
8.9
8.3
11.5
9.2
8.6
11.8
9.5
9.0
12.2
9.8
9.3
12.5
10.1
9.7
12.9
10.4
10.0
13.2
10.7
10.3
13.5
11.0
10.6
13.8
11.3
11.0
14.2
11.6
11.3
14.5
11.9
11.6
14.8
12.2
11.9
15.1
12.5
12.2
15.4
12.8
12.6
15.8
Notes:
1. Eb/No = Es/No – 10
(Spectral Efficiency).
log
(DVB-S2 uses C/N (Es/No), and Eb/No is shown for information)
QPSK
0.770627
0.965327
1.160026
1.290788
1/3
2/5
1/2
3/5
Eb/No
Eb/No
Eb/No
Eb/No
1.1
0.3
-0.7
-1.5
1.7
0.9
-0.1
-0.9
2.3
1.5
0.5
-0.3
2.9
2.1
1.1
0.3
3.4
2.6
1.6
0.8
3.9
3.1
2.1
1.3
4.4
3.6
2.6
1.8
4.8
4.0
3.1
2.3
5.3
4.5
3.5
2.7
5.7
4.9
3.9
3.1
6.1
5.3
4.4
3.6
6.5
5.7
4.8
4.0
6.9
6.1
5.2
4.4
7.3
6.5
5.6
4.8
7.7
6.9
5.9
5.1
8.1
7.3
6.3
5.5
8.5
7.7
6.7
5.9
8.8
8.0
7.0
6.2
9.2
8.4
7.4
6.6
9.5
8.7
7.8
7.0
9.9
9.1
8.1
7.3
10.2
9.4
8.5
7.7
10.6
9.8
8.8
8.0
10.9
10.1
9.1
8.3
11.3
10.5
9.5
8.7
11.6
10.8
9.8
9.0
11.9
11.1
10.1
9.3
12.2
11.4
10.5
9.7
12.6
11.8
10.8
10.0
12.9
12.1
11.1
10.3
13.2
12.4
11.4
10.6
13.5
12.7
11.8
11.0
13.9
13.1
12.1
11.3
14.2
13.4
12.4
11.6
14.5
13.7
12.7
11.9
2. The required C/N for QEF with Short Frames is typically 0.2 to 0.3 dB higher.
1.452076
1.549426
1.615288
1.724416
2/3
3/4
4/5
5/6
Eb/No
Eb/No
Eb/No
Eb/No
-2.0
-2.5
-2.8
-2.9
-1.3
-1.8
-2.1
-2.3
-0.7
-1.2
-1.5
-1.7
-0.2
-0.7
-1.0
-1.2
0.3
-0.2
-0.4
-0.6
0.9
0.3
0.1
-0.1
1.3
0.8
0.5
0.4
1.8
1.3
1.0
0.8
2.2
1.7
1.4
1.3
2.7
2.2
1.9
1.7
3.1
2.6
2.3
2.1
3.5
3.0
2.7
2.5
3.9
3.4
3.1
2.9
4.3
3.8
3.5
3.3
4.7
4.2
3.9
3.7
5.0
4.5
4.3
4.1
5.4
4.9
4.6
4.4
5.8
5.3
5.0
4.8
6.1
5.6
5.3
5.2
6.5
6.0
5.7
5.5
6.8
6.3
6.1
5.9
7.2
6.7
6.4
6.2
7.5
7.0
6.7
6.6
7.9
7.4
7.1
6.9
8.2
7.7
7.4
7.2
8.5
8.0
7.8
7.6
8.9
8.4
8.1
7.9
9.2
8.7
8.4
8.2
9.5
9.0
8.7
8.6
9.9
9.3
9.1
8.9
10.2
9.7
9.4
9.2
10.5
10.0
9.7
9.5
10.8
10.3
10.0
9.8
11.1
10.6
10.3
10.2
11.5
10.9
10.7
10.5
E–3
1.746049
1.739569
1.935658
2.177525
8/9
9/10
3/5
2/3
Eb/No
Eb/No
Eb/No
Eb/No
-3.2
-3.3
-3.3
-3.7
-2.6
-2.6
-2.6
-3.1
-2.0
-2.0
-2.0
-2.5
-1.4
-1.5
-1.5
-1.9
-0.9
-1.0
-0.9
-1.4
-0.4
-0.5
-0.4
-0.9
0.1
0.0
0.0
-0.4
0.5
0.5
0.5
0.0
1.0
0.9
0.9
0.5
1.4
1.4
1.4
0.9
1.8
1.8
1.8
1.3
2.2
2.2
2.2
1.7
2.6
2.6
2.6
2.1
3.0
3.0
3.0
2.5
3.4
3.4
3.4
2.9
3.8
3.7
3.8
3.3
4.2
4.1
4.1
3.7
4.5
4.5
4.5
4.0
4.9
4.8
4.8
4.4
5.2
5.2
5.2
4.7
5.6
5.5
5.6
5.1
5.9
5.9
5.9
5.4
6.3
6.2
6.2
5.8
6.6
6.6
6.6
6.1
7.0
6.9
6.9
6.5
7.3
7.2
7.2
6.8
7.6
7.6
7.6
7.1
7.9
7.9
7.9
7.4
8.3
8.2
8.2
7.8
8.6
8.5
8.6
8.1
8.9
8.9
8.9
8.4
9.2
9.2
9.2
8.7
9.6
9.5
9.5
9.1
9.9
9.8
9.8
9.4
10.2
10.1
10.2
9.7
3. Shaded areas are high error rate or unstable.
Revision 2
MN-CDM750
8PSK
2.422276
2.585924
2.618365
3/4
5/6
8/9
9/10
Eb/No
Eb/No
Eb/No
-4.2
-4.7
-5.0
-5.0
-3.6
-4.1
-4.3
-4.4
-3.0
-3.5
-3.8
-3.8
-2.4
-2.9
-3.2
-3.3
-1.9
-2.4
-2.7
-2.7
-1.4
-1.9
-2.2
-2.2
-0.9
-1.4
-1.7
-1.7
-0.5
-0.9
-1.2
-1.3
0.0
-0.5
-0.8
-0.8
0.4
-0.1
-0.3
-0.4
0.8
0.4
0.1
0.0
1.2
0.8
0.5
0.4
1.6
1.2
0.9
0.8
2.0
1.6
1.3
1.2
2.4
1.9
1.7
1.6
2.8
2.3
2.0
2.0
3.1
2.7
2.4
2.3
3.5
3.0
2.8
2.7
3.9
3.4
3.1
3.1
4.2
3.8
3.5
3.4
4.6
4.1
3.8
3.8
4.9
4.5
4.2
4.1
5.3
4.8
4.5
4.5
5.6
5.1
4.9
4.8
5.9
5.5
5.2
5.1
6.3
5.8
5.5
5.5
6.6
6.1
5.9
5.8
6.9
6.5
6.2
6.1
7.3
6.8
6.5
6.5
7.6
7.1
6.8
6.8
7.9
7.4
7.2
7.1
8.2
7.8
7.5
7.4
8.6
8.1
7.8
7.7
8.9
8.4
8.1
8.1
9.2
8.7
8.4
8.4
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