Comtech EF Data CDD-562AL Installation And Operation Manual page 229

CDD-562AL/564A/L Multi-Channel Demodulator
Forward Error Correction
1
1E-1
Uncoded
BPSK/QPSK
1E-2
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure A-22. VersaFEC Codec Extended CCM Rate 0.576 8-QAM and Rate 0.644 16-QAM
2 3 4
Rate
Rate
0.576
0.644
8-QAM
16-QAM
2 3 4
5 6 7
Comtech VersaFEC®
Codec - Extended CCM
0.576 8-QAM and
0.644 16-QAM
Typical performance show -
guaranteed performance
curves are 0.3 dB to the right
5 6 7
A–17
MN-CDD562AL564AL
Eb/No in dB
8 9 10 11
Uncoded
8-PSK
8 9 10 11
Revision 0
12
12