Figure 7-16. Ldpc, Rate 3/4, (O)Qpsk/8-Qam - Comtech EF Data CDM-600L Installation And Operation Manual

CDM-600L Satellite Modem
Forward Error Correction Options
1
1E-1
Uncoded
BPSK/QPSK
1E-2
1E-3
1E-4
1E-5
Typical limit
QPSK/OQPSK
Rate 3/4
1E-6
1E-7
1E-8
1E-9
1
BER
2 3 4 5
Spec limit
Spec limit
QPSK/OQPSK
8-QAM
Rate 3/4
Rate 3/4
Typical limit
8-QAM
Rate 3/4
3 4
2 5

Figure 7-16. LDPC, Rate 3/4, (O)QPSK/8-QAM

6 7 8
LDPC, Rate 3/4
QPSK/OQPSK/
8-QAM
6 7
8
7–28
Revision 2
MN/CDM600L.IOM
Eb/No in dB
9 10 11 12
Uncoded
8-PSK
9 11 12
10