Comtech EF Data CDM-625A Installation And Operation Manual page 53

CDM-625A Advanced Satellite Modem
Introduction
8PSK/TCM CODEC
BER (with two adjacent
carriers, each 7 dB higher than
the desired carrier)
16-QAM VITERBI/
220,200 RS BER (with two
adjacent carriers, each 7 dB
higher than the desired carrier)
SEQUENTIAL at 64 kbps
BER performance (met in the
presence of two adjacent
carriers, each 7 dB higher than
the desired carrier)
SEQUENTIAL
at 2048 kbps BER
performance (met in the
presence of two adjacent
carriers, each 7 dB higher than
the desired carrier)
SEQUENTIAL and RS 220,200
Outer Code
at 512 kbps
BER performance (with two
adjacent carriers, each 7 dB
higher than the desired carrier)
TURBO PRODUCT CODEC
BER
Rate 21/44 B/Q/OQPSK
Rate 5/16 BPSK
BER (with two adjacent
carriers, each 7 dB higher than
the desired carrier)
TURBO PRODUCT CODEC
BER
Rate 3/4 QPSK
Rate 3/4 8PSK/8-QAM
Rate 3/4 16-QAM
BER (with two adjacent
carriers, each 7 dB higher than
the desired carrier)
Rate 2/3 8PSK/TCM
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 7.9 dB (7.2 dB)
-5
BER=10 9.5 dB (8.7 dB)
-7
BER=10 10.4 dB (9.5 dB)
-8
16-QAM Rate 3/4
Viterbi/RS
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 8.1 dB (7.5 dB)
-6
BER=10 8.6 dB (8.0 dB)
-8
Rate 1/2 (B, Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 4.4 dB (4.0 dB)
-4
BER=10 5.1 dB (4.6 dB)
-6
BER=10 5.7 dB (5.2 dB)
-8
Rate 1/2 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 5.0 dB (4.6 dB)
-4
BER=10 5.8 dB (5.4 dB)
-6
BER=10 6.7 dB (6.3 dB)
-8
Rate 1/2 (B, Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 4.5 dB (4.1 dB)
-4
BER=10 4.7 dB (4.3 dB)
-6
BER=10 4.9 dB (4.6 dB)
-8
Rate 21/44 (B, Q, OQ)*
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 3.1 dB (2.9 dB)
-6
BER=10 3.3 dB (3.1 dB)
-7
BER=10 3.5 dB (3.3 dB)
-8
Rate 3/4 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
For:
BER=10 3.8dB (3.4dB)
-6
BER=10 4.1dB (3.7dB)
-7
BER=10 4.4dB (4.0dB)
-8
Rate 2/3 8PSK/TCM
w/concatenated RS
Guaranteed Eb/No:
(typical value in parentheses)
6.3 dB (5.4 dB)
6.7 dB (5.8 dB)
6.9 dB (6.0 dB)
16-QAM Rate 7/8
Viterbi/RS
Guaranteed Eb/No:
(typical value in parentheses)
9.5 dB (9.0 dB)
10.1 dB (9.5 dB)
Rate 3/4 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
5.2 dB (4.7 dB)
5.8 dB (5.4 dB)
6.4 dB (6.0 dB)
Rate 3/4 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
5.6 dB (5.2 dB)
6.4 dB (6.0 dB)
7.3 dB (6.8 dB)
Rate 3/4 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
5.0 dB (4.6 dB)
5.2 dB (4.8 dB)
5.4 dB (5.0 dB)
Rate 5/16 (B)
Guaranteed Eb/No:
(typical value in parentheses)
2.7 dB (2.5dB)
2.9 dB (2.7dB)
3.1 dB (2.9dB)
Rate 3/4 (8PSK, 8-QAM)
Guaranteed Eb/No:
(typical value in parentheses)
6.4 dB (6.0 dB)
6.7 dB (6.3 dB)
7.1 dB (6.7 dB)
1–17
Revision 0
MN-CDM625A
Attention:
For 126,112
Reed-Solomon
Add 0.2 dB to these figures
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
6.2 dB (5.7 dB)
7.0 dB (6.6 dB)
7.9 dB (7.4 dB)
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
6.5 dB (6.0 dB)
7.6 dB (7.2 dB)
8.7 dB (8.2 dB)
Rate 7/8 (Q, OQ)
Guaranteed Eb/No:
(typical value in parentheses)
5.9 dB (5.5 dB)
6.1 dB (5.7 dB)
6.3 dB (5.9 dB)
* See Notes 1 and 2 (below)
Rate 3/4 (16-QAM)
Guaranteed Eb/No:
(typical value in parentheses)
7.8 dB (7.4 dB)
8.1 dB (7.7 dB)
8.5 dB (8.2 dB)