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CDM-625 Advanced Satellite Modem
Forward Error Correction Options
1
1E-1
Uncoded
BPSK/QPSK
1E-2
Spec limit -
QPSK/OQPSK
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
Typical performance
1E-9
1
BER
Figure 7-8. Rate 7/8 QPSK/OQPSK, 8-PSK/8-QAM and 16-QAM TPC
2
3
4
Rate 7/8
Spec limit
2
3
4
5
6
7
Comtech Turbo Product Codec
Rate 7/8 QPSK/OQPSK,
8-PSK/8-QAM and 16-QAM
Uncoded
8-PSK
Rate 7/8
8-PSK
8-QAM
5
6
7
7–18
MN-0000036 (Ref MN/CDM625.IOM)
Eb/No in dB
8
9
10
11
Uncoded
16-QAM
Spec limit
Rate 7/8
16-QAM
8
9
10
11
Revision 1
12
12
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