Comtech EF Data CDM-570AL - Page 497

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
FEC (Forward Error Correction) Options B–33 MN-CDM570A
Figure B-15. VersaFEC Codec Rates 0.731, 0.780, 0.829, and 0.853 16-QAM
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
1 2 3 4 5 6 7 8 9 10 11 12
Eb/No in dB
Rate
0.780
16-QAM
Uncoded BPSK/QPSK
Typical Performance shown -
guaranteed performance curves
are 0.3dB to the right
Rate
0.731
16-QAM
1 2 3 4 5 6 7 8 9 10 11 12
BER
Comtech VersaFEC® Codec
Rate 0.731, 0.780, 0.829
and 0.853 16-QAM
Uncoded 16-QAM
Rate
0.829
16-QAM
Rate
0.853
16-QAM