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Comtech EF Data CDD-880 User Manual

Page 119

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CDD-880 Multi Receiver Router

Revision 1

Appendix B

MN-CDD880

B–5

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

Rate 0.533, 0.631, 0.706,

and 0.803 QPSK

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

BER

Rate

0.533

QPSK

Typical performance shown -

guaranteed performance curves

are 0.3 dB to the right

Rate

0.631

QPSK

Rate

0.706

QPSK

Rate

0.803

QPSK

Figure B-3. VersaFEC Codec – QPSK, Rate 0.533, 0.631, 0.706 and 0.803