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CDM-625A Advanced Satellite Modem
Revision 0
Appendix B
MN-CDM625A
Eb/No in dB
1
2
3
4
5
6
7
8
9
10
11
12
1E-1
Comtech VersaFEC® Codec
Rate 0.731, 0.780, 0.829
and 0.853 16-QAM
Uncoded BPSK/QPSK
1E-2
Uncoded 16-QAM
Rate
Rate
Rate
Rate
0.780
0.731
0.829
0.853
16-QAM
16-QAM
16-QAM
16-QAM
1E-3
1E-4
1E-5
1E-6
1E-7
Typical Performance shown -
guaranteed performance curves
are 0.3dB to the right
1E-8
1E-9
1
2
3
4
5
6
7
8
9
10
11
12
BER
Figure B-21. VersaFEC Codec Rates 0.731, 0.780, 0.829, and 0.853 16-QAM
B–34
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