Product specifications

CDM-710 Broadcast Satellite Modem Revision 11
Introduction MN/CDM710.IOM
1–18
Table 1-2. Eb/No Performance at Quasi Error Free PER = 10
-7
with AWGN for DVB-S2 Operations
(FECFRAME = 64,800 or 16,200 Bits and no Pilot)
Modulation
DVB-S2
Code
Rate
Spectral Efficiency
Specified Es/No (dB)
See Notes
Eb/No (dB)
See Notes
Remarks
FECFrame =
64,800 bits
FECFrame =
16,200 bits
QPSK
1/4 0.490243 0.365324 -1.85 1.25 Information
1/3 0.656448 0.629060 -0.74 1.09 Information
2/5 0.789412 0.760928 0.20 1.23 Information
1/2 0.988858 0.848840 1.50 1.55
3/5 1.188304 1.156532 2.73 1.98
2/3 1.322253 1.288400 3.60 2.39
3/4 1.487473 1.420269 4.53 2.81
4/5 1.587196 1.508181 5.18 3.17
5/6 1.654663 1.596093 5.68 3.49
8/9 1.766451 1.727961 6.70 4.23
9/10 1.788612 N/A 6.92 4.39
8-PSK
3/5 1.779991 1.725319 6.20 3.70
2/3 1.980636 1.922040 7.32 4.35
3/4 2.228124 2.118761 8.61 5.13
5/6 2.478562 2.381056 10.15 6.21
8/9 2.646012 2.577778 11.49 7.26
9/10 2.679207 N/A 11.78 7.50
16-APSK
2/3 2.637201 2.548792 9.97 5.76
3/4 2.966728 2.809662 11.21 6.49
4/5 3.165623 2.983575 12.03 7.03
5/6 3.300184 3.157488 12.61 7.42
8/9 3.523143 3.418357 13.89 8.42
9/10 3.567342 N/A 14.13 8.61
32-APSK
3/4 3.703295 3.493093 13.73 8.04
4/5 3.951571 3.709309 14.64 8.67
5/6 4.119540 3.925526 15.28 9.13
8/9 4.397854 4.249850 16.69 10.26
9/10 4.453027 N/A 17.05 10.56
Notes:
1. Eb/No = Es/No – 10 Log (Spectral Efficiency).
2. BER ≈ 10
-9
at PER = 10
-7
3. Performance with FECFRAME = 16,200 Bits and no pilot is typically 0.2 to 0.3 dB higher.
Table 1-3. Eb/No Performance for DVB-S QPSK Operations
BER
Eb/No (dB)
1/2 2/3 3/4 5/6 7/8
10
-6
3.7 4.4 5.0 5.6 5.9
10
-8
4.0 4.7 5.3 5.9 6.3
10
-11
4.5 5.1 5.8 6.4 6.9