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Technical Specifications DMD15/DMD15L/DMD15/DMD15LL/DMD15/DMD15LIBS/IDR Satellite Modem
7-6 TM051 – Rev. 5.8
10
-3
4.8 dB 5.2 dB 6.0 dB 4.3 dB 4.7 dB 5.5 dB
10
-4
5.2 dB 5.7 dB 6.4 dB 4.7 dB 5.2 dB 5.9 dB
10
-5
5.6 dB 6.1 dB 6.9 dB 5.1 dB 5.6 dB 6.4 dB
10
-6
5.9 dB 6.5 dB 7.4 dB 5.4 dB 6.1 dB 6.9 dB
10
-7
6.3 dB 7.0 dB 7.9 dB 5.8 dB 6.5 dB 7.4 dB
10
-8
6.7 dB 7.4 dB 8.4 dB 6.2 dB 6.9 dB 7.9 dB
Concatenated Reed-Solomon Performance (BER Specifications)
Guaranteed Performance
BER vs.
E
b
/N
o
Rate 1/2 FEC Rate 3/4 FEC
10
-6
4.1 5.6
10
-7
4.2 5.8
10
-8
4.4 6.0
10
-10
5.0 6.3
16 QAM BER Performance (Viterbi Decoder)
Specification Typical BER
1/2 Rate 3/4 Rate 7/8 Rate 1/2 Rate 3/4 Rate 7/8 Rate
10
-3
n/a 8.9 dB 10.3 dB n/a 8.1 dB 9.5 dB
10
-4
n/a 9.8 dB 11.1 dB n/a 9.0 dB 10.3 dB
10
-5
n/a 10.7 dB 11.9 dB n/a 9.9 dB 11.1 dB
10
-6
n/a 11.5 dB 12.7 dB n/a 10.7 dB 11.9 dB
10
-7
n/a 12.4 dB 13.5 dB n/a 11.6 dB 12.7 dB
10
-8
n/a 13.3 dB 14.3 dB n/a 12.5 dB 13.5 dB
16 QAM BER Performance (Viterbi Decoder w/ Reed-Solomon)
Specification Typical BER
1/2 3/4 7/8 1/2 3/4 7/8
10
-3
n/a 8.4 dB 9.8 dB n/a 7.8 dB 9.3 dB
10
-4
n/a 8.6 dB 10.1 dB n/a 8.1 dB 9.6 dB
10
-5
n/a 8.9 dB 10.3 dB n/a 8.3 dB 9.9 dB