Comtech EF Data CDM-625A Installation And Operation Manual page 54

Advanced satellite modem (18 kbps – 25 mbps)
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CDM-625A Advanced Satellite Modem
Introduction
TURBO PRODUCT CODEC
BER
Rate 7/8 QPSK
Rate 7/8 8PSK/8-QAM
Rate 7/8 16-QAM
BER (with two adjacent
carriers, each 7 dB higher than
the desired carrier)
TURBO PRODUCT CODEC
BER
Rate 0.95 QPSK
Rate 0.95 8PSK/8-QAM
BER (with two adjacent
carriers, each 7 dB higher than
the desired carrier)
LDPC CODEC BER
Rate 1/2 B/Q/OQPSK
Rate 2/3 Q/OQPSK
Rate 1/2 Q/OQPSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
LDPC CODEC BER
Rate 2/3 8PSK
Rate 3/4 8PSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
LDPC CODEC BER
Rate 2/3 8-QAM
Rate 3/4 8-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
LDPC CODEC BER
Rate 3/4 16-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
VersaFEC CODEC BER
BPSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
VersaFEC CODEC BER
QPSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
4.3 dB (4.0 dB)
-5
BER=10
4.5 dB (4.2 dB)
-8
Rate 0.95 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
6.4 dB (6.0 dB)
-6
BER=10
6.7 dB (6.3 dB)
-7
BER=10
6.9 dB (6.5 dB)
-8
* See Note 2
BPSK/QPSK/OQPSK* Rate 1/2
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
2.0 dB (1.7 dB)
-5
BER=10
2.3 dB (2.0 dB)
-9
8PSK Rate 2/3 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
-5
BER=10
5.7 dB (5.2 dB)
-9
8-QAM Rate 2/3 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
4.6 dB (4.2 dB)
-5
BER=10
5.0 dB (4.6 dB)
-9
16-QAM Rate 3/4 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
6.8 dB (6.2 dB)
-5
BER=10
7.1 dB (6.8 dB)
-9
Rate 0.488
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10
2.4 dB (2.1 dB)
-5
BER=10
2.7 dB (2.4 dB)
-8
Rate 0.533 QPSK
Guaranteed Eb/No:
(typical value in
parentheses)
For:
BER=10
2.3 dB (2.0 dB)
-5
BER=10
2.5 dB (2.2 dB)
-8
Rate 7/8 (8PSK, 8-QAM)
Guaranteed Eb/No:
(typical value in parentheses)
7.0 dB (6.7 dB)
7.2 dB (6.8 dB)
Rate 0.95 (8PSK, 8-QAM)
Guaranteed Eb/No:
(typical value in parentheses)
9.6 dB (9.2 dB)
10.1 dB (9.7 dB)
10.6 dB (10.2 dB)
QPSK/OQPSK
LDPC
Rate 2/3 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
2.3 dB (2.0 dB)
2.7 dB (2.3 dB)
8PSK Rate 3/4 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
---
5.6 dB (5.2 dB)
6.0 dB (5.6 dB)
8-QAM Rate 3/4 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
5.6 dB (5.2 dB)
6.0 dB (5.6 dB)
Rate 0.631 QPSK
Guaranteed Eb/No:
(typical value in
parentheses)
2.8 dB (2.5 dB)
3.0 dB (2.7 dB)
1–18
Revision 0
MN-CDM625A
Rate 7/8 (16-QAM)
Guaranteed Eb/No:
(typical value in parentheses)
8.1 dB (7.7 dB)
8.4 dB (8.1 dB)
QPSK/OQPSK
Rate 3/4 LDPC
Guaranteed Eb/No:
(typical value in parentheses)
3.0 dB (2.6 dB)
3.3 dB (3.0 dB)
Rate 0.706 QPSK
Rate 0.803 QPSK
Guaranteed Eb/No:
Guaranteed Eb/No:
(typical value in
(typical value in
parentheses)
parentheses)
3.3 dB (3.0 dB)
3.8 dB (3.5 dB)
3.7 dB (3.4 dB)
4.1 dB (3.8 dB)

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