Comtech EF Data DMD-2050E - Manual (Page 183)

DMD2050E Universal Satellite Modem Technical Specifications
MN-DMD2050E Revision 2 7–9
7.12 BER Specifications
7.12.1 BER Performance (Viterbi)
Figure 7-1. DMD2050E B/O/QPSK BER Performance (Viterbi)
Note: Eb/No values include the effect of using differential decoding and v.35 descrambling.
1E-9
1E-8
1E-7
1E-6
1E-5
1E-4
1E-3
1E-2
1E-1
0 1 2 3 4 5 6 7 8 9 10 11 12
BE
R
Eb/No in dB
Viterbi Decoder
Specification 1/2
Rate
Specification 3/4
Rate
Specification 7/8
Rate
Typical
Performance
B/O/QPSK Uncoded Theory