Figure 6-3. Versafec Codec - Qpsk, Rate 0.533, 0.631, 0.706 And 0.803 - Comtech EF Data CDD-880 Installation And Operation Manual

CDD-880 Multi Receiver Router
Forward Error Correction
1
1E-1
Uncoded
BPSK/QPSK
1E-2
Rate
1E-3
0.533
QPSK
1E-4
1E-5
1E-6
1E-7
1E-8
1E-9
1
BER
Figure 6-3. VersaFEC Codec – QPSK, Rate 0.533, 0.631, 0.706 and 0.803
2 3 4 5
Rate
Rate Rate
0.631
0.706 0.803
QPSK
QPSK QPSK
Typical performance shown -
guaranteed performance curves
2 3 4
6 7 8
Comtech VersaFEC® Codec
Rate 0.533, 0.631, 0.706,
and 0.803 QPSK
are 0.3 dB to the right
5 6 7 8
6–4
Revision 0
MN-CDD880
Eb/No in dB
9 10 11 12
9 10 11 12