Comtech EF Data cdm-570a - Page 495

CDM-570A/570AL Satellite Modem with Optional Packet Processor
Revision 5
FEC (Forward Error Correction) Options B–31 MN-CDM570A
Figure B-13. VersaFEC Codec Rates 0.533, 0.631, 0.706, and 0.803 QPSK
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
Uncoded
BPSK/QPSK
Comtech VersaFEC® Codec
Rate 0.533, 0.631, 0.706,
and 0.803 QPSK
1 2 3 4 5 6 7 8 9 10 11 12
BER
Rate
0.533
QPSK
Typical performance shown -
guaranteed performance curves
are 0.3 dB to the right
Rate
0.631
QPSK
Rate
0.706
QPSK
Rate
0.803
QPSK