Comtech EF Data CDM-550T Manual page 143

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CDM-550T Satellite Modem
Notes:
1) OQPSK values are the same as QPSK
2) In framed (EDMAC)modes, no RS, add 0.2 dB to the values of Eb/No shown
3) In RS modes, no EDMAC, add 0.4 dB to the values of Eb/No shown
4) In RS modes with EDMAC, add 0.6 dB to the values of Eb/No shown
5) Consult Factory for information on Rate 21/44 and Rate 5/16 Turbo BPSK
Rev. 1.3
Eb/No -
Eb/No -
(C+N)/N
Uncoded
Rate 1/2
BPSK
3.0
0.0
3.5
0.9
4.0
1.8
4.5
2.6
5.0
3.3
5.5
4.1
6.0
4.7
6.5
5.4
7.0
6.0
7.5
6.6
8.0
7.3
8.5
7.8
9.0
8.4
9.5
9.0
10.0
9.5
10.5
10.1
11.0
10.6
11.5
11.2
12.0
11.7
12.5
12.2
13.0
12.8
13.5
13.3
14.0
13.8
14.5
14.3
15.0
14.9
15.5
15.4
16.0
15.9
16.5
16.4
17.0
16.9
17.5
17.4
18.0
17.9
Eb/No -
Eb/No -
Uncoded
Rate 1/2
BPSK
QPSK
QPSK
3.0
-
3.9
-
4.8
-
5.6
-
6.3
0.3
7.1
1.1
7.7
1.7
8.4
2.4
9.0
3.0
9.6
3.6
10.3
4.3
10.8
4.8
11.4
5.4
12.0
6.0
12.5
6.5
13.1
7.1
13.6
7.6
14.2
8.2
14.7
8.7
15.2
9.2
15.8
9.8
16.3
10.3
16.8
10.8
17.3
11.3
17.9
11.9
18.4
12.4
18.9
12.9
19.4
13.4
19.9
13.9
20.4
14.4
20.9
14.9
Eb/No Measurement
Eb/No -
Eb/No -
Rate 3/4
Rate 7/8
QPSK
QPSK
0.0
-
0.9
-
1.8
0.0
2.6
0.8
3.3
1.5
4.1
2.3
4.7
2.9
5.4
3.6
6.0
4.2
6.6
4.8
7.3
5.5
7.8
6.0
8.4
6.6
9.0
7.2
9.5
7.7
10.1
8.3
10.6
8.8
11.2
9.4
11.7
9.9
12.2
10.4
12.8
11.0
10.3
13.3
11.5
10.8
13.8
12.0
11.3
14.3
12.5
11.8
14.9
13.1
12.4
15.4
13.6
12.9
15.9
14.1
13.4
16.4
14.6
13.9
16.9
15.1
14.4
17.4
15.6
14.9
17.9
16.1
15.4
-
-
-
0.1
0.8
1.6
2.2
2.9
3.5
4.1
4.8
5.3
5.9
6.5
7.0
7.6
8.1
8.7
9.2
9.7
B–3

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