Comtech EF Data CDM-625A, Installation And Operation Manual

Page: 60 / 756

CDM-625A Advanced Satellite Modem MN-CDM625A
Introduction Revision 4
1–18
TURBO PRODUCT CODEC
BER
Rate 21/44 B/Q/OQPSK
Rate 5/16 BPSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
For BER=10
-X
Rate – Guaranteed Eb/No (typical value in parentheses)
BER=10
-6
BER=10
-7
BER=10
-8
Rate 21/44 (B, Q, OQ)*
3.1 dB (2.9 dB)
3.3 dB (3.1 dB)
3.5 dB (3.3 dB)
* See Notes 1 and 2
Rate 5/16 (B)
2.7 dB (2.5dB)
2.9 dB (2.7dB)
3.1 dB (2.9dB)
TURBO PRODUCT CODEC
BER
Rate 3/4 QPSK
Rate 3/4 8PSK/8-QAM
Rate 3/4 16-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-6
BER=10
-7
BER=10
-8
Rate 3/4 (Q, OQ)
3.8dB (3.4dB)
4.1dB (3.7dB)
4.4dB (4.0dB)
Rate 3/4 (8PSK, 8-QAM)
6.4 dB (6.0 dB)
6.7 dB (6.3 dB)
7.1 dB (6.7 dB)
Rate 3/4 (16-QAM)
7.8 dB (7.4 dB)
8.1 dB (7.7 dB)
8.5 dB (8.2 dB)
TURBO PRODUCT CODEC
BER
Rate 7/8 QPSK
Rate 7/8 8PSK/8-QAM
Rate 7/8 16-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-5
BER=10
-8
Rate – Guaranteed Eb/No
(typical value in parentheses)
Rate 7/8 (Q, OQ)
4.3 dB (4.0 dB)
4.5 dB (4.2 dB)
Rate 7/8 (8PSK, 8-QAM)
7.0 dB (6.7 dB)
7.2 dB (6.8 dB)
Rate 7/8 (16-QAM)
8.1 dB (7.7 dB)
8.4 dB (8.1 dB)
TURBO PRODUCT CODEC
BER
Rate 0.95 QPSK
Rate 0.95 8PSK/8-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-6
BER=10
-7
BER=10
-8
Rate 0.95 (Q, OQ)
6.4 dB (6.0 dB)
6.7 dB (6.3 dB)
6.9 dB (6.5 dB)
Rate 0.95 (8PSK, 8-QAM)
9.6 dB (9.2 dB)
10.1 dB (9.7 dB)
10.6 dB (10.2 dB)
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)
BER=10
-5
BER=10
-9
Rate 1/2 LDPC
BPSK/QPSK/OQPSK*
2.0 dB (1.7 dB)
2.3 dB (2.0 dB)
* See Note 2
Rate 2/3 LDPC
QPSK/OQPSK
2.3 dB (2.0 dB)
2.7 dB (2.3 dB)
QPSK/OQPSK
Rate 3/4 LDPC
3.0 dB (2.6 dB)
3.3 dB (3.0 dB)
LDPC CODEC BER
Rate 2/3 8PSK
Rate 3/4 8PSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-5
BER=10
-9
Rate – Guaranteed Eb/No
(typical value in parentheses)
8PSK Rate 2/3 LDPC
---
5.7 dB (5.2 dB)
8PSK Rate 3/4 LDPC
5.6 dB (5.2 dB)
6.0 dB (5.6 dB)
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)
BER=10
-5
BER=10
-9
Rate 2/3 LDPC 8-QAM
4.6 dB (4.2 dB)
5.0 dB (4.6 dB)
Rate 3/4 LDPC 8-QAM
5.6 dB (5.2 dB)
6.0 dB (5.6 dB)
LDPC CODEC BER
Rate 3/4 16-QAM
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-5
BER=10
-9
Rate 3/4 LDPC 16-QAM
6.8 dB (6.2 dB)
7.1 dB (6.8 dB)
VersaFEC CODEC BER
BPSK
(With two adjacent carriers,
each 7 dB higher than the
desired carrier)
BER=10
-5
BER=10
-8
Rate 0.488
2.4 dB (2.1 dB)
2.7 dB (2.4 dB)