Quantum and Evolution Series Installation and Operating Handbook
6-1
Chapter 6
Introduction
6.1 Overview
The Quantum and Evolution Series Single-Channel-Per-Carrier (SCPC) satellite modems
are designed for both open and closed network operation in a variety of environments
(such as ground stations and mobile and fly away terminals) providing a data link
between geographically distant sites via satellite.
Features include:
•
Open network Intelsat IBS to IESS-309 and IESS-310 and Intelsat IDR to IESS-
308 and IESS-310, plus Eutelsat SMS to EESS 501.
•
DVB-S2 (EN 302 307) operation (Quantum only).
•
Closed network modes (with and without overhead) including OM-73 support.
•
Various custom framing modes.
•
Drop and Insert (D&I) via T1-D4, T1-ESF and G.732 bearer types.
•
IF frequency range of 50 to 90MHz and 100 to 180MHz; L-band frequency range
of 950MHz to 2050MHz.
•
Variable data rate between 4.8kbps and 55Mbps (model specific).
•
Support for BPSK, QPSK, Offset QPSK, 8PSK, 16QAM, 16APSK and 32APSK
modulation schemes.
•
Forward Error Correction (FEC) options of Viterbi, Sequential, Trellis Coded
Modulation (TCM), Turbo Product Code (TPC) and FastLink low-latency Low
Density Parity Code (LDPC) as well as DVB-S2 compliant FEC (model specific).
•
Concatenated
Reed-Solomon
(RS)
and Bose-Chaudhuri-Hocquenghem (BCH)
outer FEC (model specific).
•
A full range of terrestrial interfaces including RS422, V.35, RS232, (Synchronous
and Asynchronous) LVDS, HSSI, Eurocom D1, Ethernet/Internet Protocol (IP) and
G.703 (T1/E1, T2/E2 and T3/E3). There is also a G.703 variant that multiplexes
and demultiplexes four E1 interfaces and can be used in a MultiMux configuration,
which multiplexes serial data, G.703 and IP traffic. A multiple E1 Sat-Abis
interface is available for direct connection to an Abis interface between a GSM
BTS and BSC, compressing voice traffic by up to 50%.
•
Automatic Uplink Power Control (AUPC) that causes automatic adjustment of the
modem output power to maintain a constant Eb/No at the distant end of the
satellite link.
•
Front panel display and keypad for local control.
•
Remote control through both serial and IP interfaces. IP remote control can be
through a variety of methods including: built-in web pages served from the
modem’s embedded web server to any supported web browser; the Simple
Network Management Protocol (SNMP); a standard Telnet protocol session where
the user communicates using a Telnet client terminal-emulation program.
•
Compact 1U chassis, 405mm deep.
•
An extensive set of TCP/IP features including TCP acceleration, header
compression, web acceleration, bridging, static and dynamic routing, DHCP, IEEE
802.1p QOS support, IEEE 802.1q VLAN support, traffic shaping, etc.
Содержание Quantum
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Страница 348: ...Quantum and Evolution Series Installation and Operating Handbook 13 20 Modem Error Probability versus Eb No 16QAM Turbo...