CDM-570/570L Satellite Modem with Optional IP Module Revision 4
Forward Error Correction Options MN/CDM570L.IOM
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
Uncoded
BPSK/QPSK

Comtech Turbo P roduct Codec

Rate 21/44 BP SK

Rate 5/16 BPSK

1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec l im i t
Rate 21/ 44
BPSK
Spec limit
Rate 5/ 16
BPSK
Typical
performance
Figure 7-7. Rate 21/44 BPSK and Rate 5/16 BPSK Turbo
7–16