Comtech turbo product codec, Rate 3/4 qpsk, Psk/8-qam and 16-qam – Comtech EF Data CDD-562AL User Manual
Page 218
CDD-562AL/564A/L Multi-Channel Demodulator
Revision 0
Forward Error Correction
MN-CDD562AL564AL
A–10
Figure A-4. Turbo Product Codec Rate 3/4 QPSK, 8-PSK/8-QAM, and 16-QAM
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 Product Codec
Rate 3/4 QPSK
8-PSK/8-QAM and 16-QAM
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 3/4
16-QAM
Spec limit
Rate 3/4
8-PSK/8-QAM
Spec limit -
Rate 3/4
QPSK
Typical performance
Uncoded
8-PSK
Uncoded
16-QAM