Figure A-9. Versafec Codec Rates 0.642, 0.711, And 0.780 8-Qam - Comtech EF Data CDD-562AL Installation And Operation Manual

CDD-562AL/564A/L Multi-Channel Demodulator
Forward Error Correction
1
1E-1
Uncoded
BPSK/QPSK
1E-2
Rate
0.642
8-QAM
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER

Figure A-9. VersaFEC Codec Rates 0.642, 0.711, and 0.780 8-QAM

2 3 4
Rate Rate
0.711 0.780
8-QAM 8-QAM
2 3 4
5 6 7
Comtech VersaFEC® Codec
Rate 0.642, 0.711, 0.780
8-QAM
Typical performance show -
guaranteed performance curves
are 0.3 dB to the right
5 6 7
A–15
MN-CDD562AL564AL
Eb/No in dB
8 9 10 11
Uncoded
8-PSK
8 9 10 11
Revision 0
12
12