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CDM-600 Satellite Modem Revision 7
Forward Error Correction Options MN/CDM600.IOM
7–27
Figure 7-15. LDPC, Rate 2/3, (O)QPSK/8-PSK/8-QAM
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
1 2 3 4 5 6 7 8 9 10 11 12
BER
Uncoded
8-PSK
Uncoded
BPSK/QPSK/OQPSK
LDPC Rate 2/3
QPSK/OQPSK/8-PSK/
8-QAM
Spec Limit
QPSK/OQPSK
Rate 2/3
Typical
Limit
QPSK/
OQPSK
Rate 2/3
Typical
Limit
8-QAM
Rate 2/3
Spec Limit
8-QAM
Rate 2/3
Spec Limit
8-PSK
Rate 2/3
Typical
Limit
8-PSK
Rate 2/3