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 i n dB
Spec ific ati on li mi t Rat e
3/4 Viterbi and 220,200
RS Out er Code

16-QAM Viterbi, Rate 3/4 and Rate 7/8

wi th 220, 200 RS Ou ter Cod e

Uncoded BPSK/QPSK
Unc ode d 16 - QAM
Specification
limi t Rate 7/8
Viterbi and
220, 20 0 R S
Out er Code
Typical
Performance
1 2 3 4 5 6 7 8 9 10 11 12
BER
Figure 7-10. 16-QAM Viterbi, Rate 3/4 and Rate 7/8 with 220,200 RS Outer Code
7–19