CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier®
Forward Error Correction Options
1
1E-1
Uncoded
BPSK/QPSK
1E-2
Performance with CDM-Qx
1E-3
Spec limit
Spec limit
Rate 7/8
Rate 7/8
QPSK
QPSK/OQPSK
1E-4
1E-5
1E-6
1E-7
1E-8
Typical performance
1E-9
1
BER
Figure 6-5. Comtech EF Data Turbo Product Codec Rate 7/8 QPSK, 8-PSK and 16-QAM
2
3
4
5
Spec limit
Rate 7/8
8-PSK
2
3
4
5
6
7
8
Comtech Turbo Product Codec
Rate 7/8 QPSK, 8-PSK
and 16-QAM
6
7
8
7–12
Revision 7
MN/CDMQX.IOM
Eb/No in dB
9
10
11
12
Uncoded
16-QAM
Uncoded
8-PSK
Spec limit
Rate 7/8
16-QAM
9
10
11
12
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