Comtech EF Data CDM-570 - Manual (Page 183)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Forward Error Correction Options MN/CDM570L.IOM
8–17
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 Turbo Product Codec
Rate 3/4 8-QAM
Rate 0.95 8-QAM
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 0.95
8-QAM
Spec limit
Rate 3/4
8-QAM
Typical
performance
Uncoded
8-PSK
Figure 8-8. Rate 3/4 and Rate 0.95 8-QAM Turbo