Mocomtech CDM-570 User Manual
Page 207
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CDM-570/570L Satellite Modem with Optional IP Module
Revision 4
Forward Error Correction Options
MN/CDM570L.IOM
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
Comtech Turbo Product Codec
Rate 3/4 8-QAM
Rate 0.95 8-QAM
BPSK/QPSK
Uncoded
8-PSK
Figure 7-8. Rate 3/4 and Rate 0.95 8-QAM Turbo
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
7–17
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