Comtech EF Data CDM-625 - Manual (Page 294)

CDM-625 Advanced Satellite Modem Revision 15
Forward Error Correction Options MN-CDM625
7–22
Figure 7-9. Sequential Decoding at 512 kbps with RS 220,200 Outer Code
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 and
220,200 Outer Code
BPSK, QPSK, OQPSK
Uncoded BPSK/QPSK
1 2 3 4 5 6 7 8 9 10 11 12
BER
Sequential with
concatenated RS 220,200
Outer Code, 512 kbps
BPSK, QPSK, OQPSK
Specification Limit
Rate 3/4 and
220,200 Outer Code
QPSK, OQPSK
Specification Limit
Rate 7/8 and
220,200 Outer Code
QPSK, OQPSK
Typical
Performance