Comtech EF Data SDM-300A - Manual (Page 375)

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