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CDM-Qx Satellite Modem Revision 5
Forward Error Correction Options MN/CDMQx.IOM
6–12
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 2/3 Coding and
219, 201 RS Outer Code
Uncoded BPSK/QPSK
Typical
Performance
Specification
limit, Rate 2/3
Coding
1 2 3 4 5 6 7 8 9 10 11 12
BER
8-PSK/TCM Rate 2/3
Decoding, with and
without 219, 201 RS
Outer Code
Performance with CDM-Qx
Figure 6-3. 8-PSK/TCM Rate 2/3 with and without concatenated R-S Outer Code