Comtech EF Data CDM-570 - Manual (Page 176)

CDM-570/570L Satellite Modem with Optional IP Module Revision 12
Forward Error Correction Options MN/CDM570L.IOM
8–10
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
Specification
limit Rate 1/2
Coding
Uncoded BPSK/QPSK
Typical
Performance
Specification
limit, Rate 3/4
Coding
1 2 3 4 5 6 7 8 9 10 11 12
Specification
limit, Rate 7/8
Coding
BER
Viterbi
Decoding
Figure 8-1. Viterbi Decoding