Figure 7-15. Ldpc, Rate 2/3, (O)Qpsk/8-Psk/8-Qam - Comtech EF Data CDM-600L Installation And Operation Manual

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

Figure 7-15. LDPC, Rate 2/3, (O)QPSK/8-PSK/8-QAM

5 6 7 8
LDPC Rate 2/3
QPSK/OQPSK/8-PSK/
Spec Limit
8-PSK
Rate 2/3
Typical
Limit
8-PSK
Rate 2/3
5 6 7 8
7–27
MN/CDM600L.IOM
Eb/No in dB
9 10 11
8-QAM
Uncoded
8-PSK
9 10 11
Revision 2
12
12