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Maintenance
(S+N)/N
5–4
Table 5-1. EFData Conversion of (S+N)/N to S/N and E
(dB)
Code Rate 1/2
S/N
E
4.0
1.8
1.8
4.5
2.6
2.6
5.0
3.3
3.3
5.5
4.1
4.1
6.0
4.7
4.7
6.5
5.4
5.4
7.0
6.0
6.0
7.5
6.6
6.6
8.0
7.3
7.3
8.5
7.8
7.8
9.0
8.4
8.4
9.5
9.0
9.0
10.0
9.5
9.5
10.5
10.1
10.1
11.0
10.6
10.6
11.5
11.2
11.2
12.0
11.7
11.7
12.5
12.2
12.2
13.0
12.8
12.8
13.5
13.3
13.3
14.0
13.8
13.8
14.5
14.3
14.3
15.0
14.9
14.9
15.5
15.4
15.4
16.0
15.9
15.9
16.5
16.4
16.4
17.0
16.9
16.9
17.5
17.4
17.4
18.0
17.9
17.9
18.5
18.4
18.4
19.0
18.9
18.9
19.5
19.5
19.5
20.0
20.0
20.0
Various Code Rates
Code Rate 3/4
/N
S/N
E
/N
b
0
b
1.8
0.0
2.6
0.8
3.3
1.6
4.1
2.3
4.7
3.0
5.4
3.6
6.0
4.3
6.6
4.9
7.3
5.5
7.8
6.1
8.4
6.7
9.0
7.2
9.5
7.8
10.1
8.3
10.6
8.9
11.2
9.4
11.7
10.0
12.2
10.5
12.8
11.0
13.3
11.5
13.8
12.1
14.3
12.6
14.9
13.1
15.4
13.6
15.9
14.1
16.4
14.6
16.9
15.2
17.4
15.7
17.9
16.2
18.4
16.7
18.9
17.2
19.5
17.7
20.0
18.2
SDM-100A Satellite Modem
/N
for
b
0
Code Rate 7/8
S/N
E
/N
0
b
0
1.8
-0.6
2.6
0.2
3.3
0.9
4.1
1.6
4.7
2.3
5.4
3.0
6.0
3.6
6.6
4.2
7.3
4.8
7.8
5.4
8.4
6.0
9.0
6.6
9.5
7.1
10.1
7.7
10.6
8.2
11.2
8.8
11.7
9.3
12.2
9.8
12.8
10.3
13.3
10.9
13.8
11.4
14.3
11.9
14.9
12.4
15.4
12.9
15.9
13.5
16.4
14.0
16.9
14.5
17.4
15.0
17.9
15.5
18.4
16.0
18.9
16.5
19.5
17.0
20.0
17.5
Rev. 0
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