Comtech EF Data CDM-625A User Manual

Page 577

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CDM-625A Advanced Satellite Modem

MN-CDM625A

Appendix B

Revision 3

B–41

Figure B-23. VersaFEC Codec Extended CCM Rate 0.576 8-QAM and Rate 0.644 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 VersaFEC®

Codec - Extended CCM

0.576 8-QAM and

0.644 16-QAM

1 2 3 4 5 6 7 8 9 10 11 12

BER

Rate

0.576

8-QAM

Typical performance show -

guaranteed performance

curves are 0.3 dB to the right

Uncoded

8-PSK

Rate

0.644

16-QAM

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