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
Содержание CDM-710
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