Mocomtech CDM-QX - Manual (Page 178)

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Forward Error Correction Options MN/CDMQX.IOM
7–12
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 7/8 QPSK, 8-PSK
and 16-QAM
1 2 3 4 5 6 7 8 9 10 11 12
BER
Spec limit
Rate 7/8
16-QAM
Spec limit
Rate 7/8
8-PSK
Spec limit
Rate 7/8
QPSK/OQPSK
Typical performance
Uncoded
8-PSK
Uncoded
16-QAM
Performance with CDM-Qx
Figure 6-5. Comtech EF Data Turbo Product Codec Rate 7/8 QPSK, 8-PSK and 16-QAM
Spec limit
Rate 7/8
QPSK