Comtech EF Data SDM-300A User Manual
Page 375
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SDM-300A Satellite Modem
Revision 6
Specifications
MN/SDM300A.IOM
19–19
19.6.3
Performance with Noise, Viterbi Decoder, and Reed-Solomon
(Optional)
Table 19-12 lists the Viterbi decoder with Reed-Solomon specifications for the E
b
/N
0
required to achieve 10
-6
to 10
-10
BER for different configurations.
Table 19-12. Viterbi Decoder with Reed-Solomon
Eb/N0 (dB) Specification
BER
1/2 Rate
3/4 Rate
7/8 Rate
10-6
4.1 5.6 6.7
10-7
4.2 5.8 6.9
10-8
4.4 6.0 7.1
10-10
5.0 6.3 7.5
19.6.4
Performance with Noise, 56 kbps and Sequential Decoder
(Optional)
Table 19-13 lists the sequential specifications for the E
b
/N
0
required to achieve 10
-3
to 10
-8
BER at 56 kbps. All values are for operating in BPSK and QPSK modes.
Table 19-13. Sequential BER Data (56 kbps)
Eb/N0 (dB) Specification
BER
1/2 Rate
3/4 Rate
7/8 Rate
10-3
4.6
5.5
10-4
4.1 5.1 6.1
10-5
4.5 5.5 6.6
10-6
5.0 5.9 7.3
10-7
5.4 6.4 7.8
10-8
5.8 6.8 8.4
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