Figure 7-6. Rate 3/4, Rate 7/8 16-Qam With Concatenated Rs Outer Code - Comtech EF Data CDM-625 Installation And Operation Manual

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 7-6. Rate 3/4, Rate 7/8 16-QAM with Concatenated RS Outer Code

2 3 4
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
Typical
Performance
RS Outer Code
5 6 7
7–19
MN-CDM625
Eb/No i n dB
8 9 10
Uncoded 16-QAM
Specification
limit Rate 7/8
Viterbi and
220,200 RS
Outer Code
8 9 10
Revision 13
1 1 12
11 12