ComStream CM601, Installation And Operation Manual

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A-2 Technical Specifications
IDU performance
BPSK
QPSK < 0.5 dB from theory, 0.3 dB typical
< 0.5 dB from theory, 0.4 dB typical
Decoder performance
(exclusive of IDU and ODU;
Sequential rates assume long
decoder length) Sequential rate 1/2 at 64 kbps:
4.7 dB E
b
/N
0
for 10
-7
BER
Sequential rate 1/2 at 2.048 Mbps:
5.4 dB E
b
/N
0
for 10
-7
BER
Sequential rate 3/4 at 64 kbps:
5.4 dB E
b
/N
0
for 10
-7
BER
Sequential rate 3/4 at 2.048 Mbps:
6.0 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=1/2:
5.7 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=3/4:
7.0 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=7/8:
8.0 dB E
b
/N
0
for 10
-7
BER
System performance
(Sequential rate assumes a long
decoder length) IDU perfo decoder
perfo ODU performance
degra 0.4 dB (scrambling and
differential)
E
b
/N
0
for 10
-7
BER with QPSK
modulation, scrambling and differential
coding
Sequential rate 1/2 at 64 kbps:
5.7 dB E
b
/N
0
for 10
-7
BER
Sequential rate 1/2 at 2.048 Mbps:
6.4 dB E
b
/N
0
for 10
-
7
BER
Sequential rate 3/4 at 64 kbps:
6.4 dB E
b
/N
0
for 10
-7
BER
Sequential rate 3/4 at 2.048 Mbps:
7.0 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=1/2:
6.7 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=3/4:
8.0 dB E
b
/N
0
for 10
-7
BER
Viterbi rate=7/8:
9.0 dB E
b
/N
0
for 10
-7
BER