Comtech EF Data CDM-625 - Manual (Page 293)

CDM-625 Advanced Satellite Modem Revision 15
Forward Error Correction Options MN-CDM625
7–21
Figure 7-8. Sequential Decoding at 2048 kbps
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 1/2 Coding
QPSK, OQPSK
Uncoded BPSK/QPSK
Typical
Performance
Specification limit,
Rate 3/4 Coding
QPSK, OQPSK
1 2 3 4 5 6 7 8 9 10 11 12
Specification limit,
Rate 7/8 Coding
QPSK, OQPSK
BER
Sequential Decoding
2048 kbps,
QPSK, OQPSK