Comtech EF Data CDM-570 - Manual (Page 181)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Forward Error Correction Options MN/CDM570L.IOM
8–15
Figure 8-6. Rate 21/44 QPSK, Rate 0.95 QPSK and Rate 0.95 8-PSK Turbo
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 21/44 QPSK/OQPSK
Rate 0.95 QPSK/OQPSK
and 8-PSK
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 0.95
8-PSK
Spec limit
Rate 0.95
QPSK/OQPSK
Spec limit
Rate 1/2
QPSK/OQPSK
Typical
performance
Uncoded
8-PSK