Comtech EF Data CDM-600/600L - Manual (Page 133)

CDM-600/600L Open Network Satellite Modem Revision 3
Forward Error Correction Options MN/CDM600L.IOM
6–13
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 6-1. Viterbi Decoding