Digital Satellite Downlink Reception - American Forces Radio and ...
Digital Satellite Downlink Reception - American Forces Radio and ...
Digital Satellite Downlink Reception - American Forces Radio and ...
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Defense Media Center <strong>Satellite</strong> H<strong>and</strong>book V.3.26<br />
Table 4-3 Bit Error Rate (BER) to Threshold Margin Table<br />
Bit Error Rate Reading SatNet FEC ¾ DTS FEC 2/3<br />
2.00E-02 -- 0.22<br />
1.00E-02 0.36 1.44<br />
5.00-03 1.36 2.36<br />
2.00-03 2.38 3.36<br />
1.00E-03 3.12 4.10<br />
5.00E-04 3.78 4.76<br />
2.00E-04 4.56 5.54<br />
1.00E-04 5.08 6.10<br />
5.00E-05 5.58 6.60<br />
2.00E-05 6.14 7.12<br />
1.00E-05 6.50 7.48<br />
5.00E-06 6.78 7.78<br />
2.00E-06 7.18 8.18<br />
1.00E-06 7.42 8.46<br />
Note: The information shown is the amount of margin, in dB, over the DVB specification threshold<br />
for a given BER display. For example, a BER reading of 5.00E – 04 on a SATNET decoder<br />
provides 3.78 dB of margin over the Eb/No threshold of 5.5 dB or a total Eb/No of 9.28 dB. At the<br />
same BER, DTS provides 4.76 dB of margin over the Eb/No threshold of 5.0 dB for a total Eb/No<br />
of 9.76 dB.<br />
Scientific Atlanta developed the table from actual testing of decoders over a range of symbol<br />
rates. The st<strong>and</strong>ard deviation is 0.2 dB.<br />
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