Product specifications

CDM-Qx/QxL Multi-Channel Satellite Modem with DoubleTalk™ Carrier-in-Carrier® Revision 7
Introduction MN/CDMQx.IOM
1–19
1.5.5 Data Rate Ranges
FEC Type Modulation Code Rate Data Rate Range
Viterbi BPSK Rate 1/2 32 kbps to 5 Mbps
Viterbi QPSK Rate 1/2 32 kbps to 10 Mbps
Viterbi QPSK Rate 3/4 32 kbps to 15 Mbps
Viterbi QPSK Rate 7/8 32 kbps to 17.5 Mbps
Viterbi + R-S BPSK Rate 1/2 32 kbps to 4.5 Mbps
Viterbi + R-S QPSK Rate 1/2 32 kbps to 9.1 Mbps
Viterbi + R-S QPSK Rate 3/4 32 kbps to 13.7 Mbps
Viterbi + R-S QPSK Rate 7/8 32 kbps to 16 Mbps
Viterbi + R-S 16-QAM Rate 3/4 349.1 kbps to 20 Mbps
Viterbi + R-S 16-QAM Rate 7/8 407.3 kbps to 20 Mbps
TCM + RS 8-PSK Rate 2/3 232.7 kbps to 18.3 Mbps
TPC BPSK Rate 5/16 32 kbps to 3.1 Mbps
TPC BPSK Rate 21/44 32 kbps to 4.7 Mbps
TPC QPSK Rate 21/44 32 kbps to 9.5 Mbps
TPC QPSK Rate 3/4 32 kbps to 15 Mbps
TPC QPSK Rate 7/8 32 kbps to 17.5 Mbps
TPC QPSK Rate 17/18 32 kbps to 18.888 Mbps
TPC 8-PSK Rate 3/4 288 kbps to 20 Mbps
TPC 8-PSK Rate 7/8 336 kbps to 20 Mbps
TPC 8-PSK Rate 17/18 362 kbps to 20 Mbps
TPC 16-QAM Rate 3/4 384 kbps to 20 Mbps
TPC 16-QAM Rate 7/8 448 kbps to 20 Mbps
1.5.6 Framing Summary (Future)
Feature Transparent EDMAC (Future)
Overhead added
None
5% to 2 Mbps
1.5%
(see Note 2)
Available data rates and format
All rates and formats All rates and formats
Overhead components
None
Remote control link between
modems’ processor
Additional Reed-Solomon
Overhead
220/200
225/205
219/201 for IESS-310 mode
200/180
Scrambling (see Note 1 )
Basic ITU
V.35 (Intelsat)
Proprietary scrambler
Notes:
1. When Reed-Solomon is Off.
2. % for Rates 5/16, 21/44 BPSK Turbo, Rate 21/44 QPSK Turbo, and all rates > 2 Mbps.