Table 1-7. The Versafec-2 Modcod Set - Short Block - Comtech EF Data CDM-425 Installation And Operation Manual

Code
ModCod Modulation
Rate
00 BPSK 0.489
01 QPSK 0.489
02 QPSK 0.537
03 QPSK 0.586
04 QPSK 0.611
05 QPSK 0.635
06 QPSK 0.660
07 QPSK 0.684
08 QPSK 0.733
09 8-ARY 0.521
10 8-ARY 0.537
11 8-ARY 0.562
12 8-ARY 0.586
13 8-ARY 0.611
14 8-ARY 0.635
15 8-ARY 0.660
16 8-ARY 0.684
17 8-ARY 0.708
18 8-ARY 0.733
19 16-ARY 0.586
20 16-ARY 0.611
21 16-ARY 0.635
22 16-ARY 0.660
23 16-ARY 0.684
24 16-ARY 0.708
25 16-ARY 0.733
26 16-ARY 0.757
27 16-ARY 0.782
28 32-ARY 0.660
29 32-ARY 0.684
30 32-ARY 0.708
31 32-ARY 0.733
32 32-ARY 0.757
33 32-ARY 0.782
34 32-ARY 0.801
35 32-ARY 0.831
Introduction
Table 1-7. The VersaFEC-2 ModCod Set – Short Block
Typical *
Es/No
Spectral Block
efficiency, size, (SNR), for
bps/Hz bits
BER = 1 x 10
(dB)
0.489 800 -0.2
0.977 1600
1.075 1760
1.173 1920
1.221 2000
1.270 2080
1.319 2160
1.368 2240
1.466 2400
1.564 2560
1.612 2640
1.686 2760
1.759 2880
1.832 3000
1.906 3120
1.979 3240
2.052 3360
2.125 3480
2.199 3600
2.345 3840
2.443 4000
2.541 4160
2.638 4320
2.736 4480 10.3
2.834 4640 10.7
2.932 4800 11.0
3.029 4960 11.6
3.127 5120 12.2
3.298 5400 12.8
3.420 5600 13.1
3.542 5800 13.4
3.664 6000 14.0
3.787 6200 14.4
3.909 6400 14.8
4.007 6560 15.2
4.153 6800 15.8
CDM-425 Advanced Satellite Modem
Min.
Latency
at
Data Rate,
128 kbps
CCM Mode
-8
(ms)
(kbps)
16 18.0
2.3 30 18.0
2.8 33 19.3
3.4 36 21.1
3.7 37 22.0
3.9 38 22.9
4.2 39 23.7
4.5 41 24.6
5.2 43 26.4
5.6 46 28.1
5.9 47 29.0
6.2 49 30.3
6.4 51 31.7
6.6 53 33.0
6.9 55 34.3
7.2 57 35.6
7.5 59 36.9
7.8 61 38.3
8.3 63 39.6
8.7 67 42.2
9.0 70 44.0
9.3 73 45.7
9.7 76 47.5
79 49.3
82 51.0
85 52.8
88 54.5
91 56.3
93 59.4
96 61.6
99 63.8
102 66.0
105 68.2
109 70.4
112 72.1
117 74.8
1–33
Revision 0
Max.
Min Sym Max Sym
Data Rate, Rate, ACM Rate, ACM
Mode Mode
CCM Mode
(ksps) (Msps)
(Mbps)
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
2.0 37
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