Comtech EF Data CDM-625 Installation And Operation Manual page 196

CDM-625 Advanced Satellite Modem
Forward Error Correction Options
1
1E-1
Uncoded BPSK/QPSK
1E-2
1E-3
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure 7-4. Rate 3/4, Rate 7/8 16-QAM with concatenated RS Outer Code
2 3 4 5
16-QAM Viterbi, Rate 3/4 and Rate 7/8
with 220,200 RS Outer Code
Specification limit Rate
3/4 Viterbi and 220,200
2 3 4 5
6 7 8
Typical
Performance
RS Outer Code
6 7 8
7–14
MN-0000036 (Ref MN/CDM625.IOM)
Eb/No in dB
9 10 11
Uncoded 16-QAM
Specification
limit Rate 7/8
Viterbi and
220,200 RS
Outer Code
9 10 11
Revision 1
12
12