EASTAR UHP-1000 SERIES SATELLITE ROUTER
INSTALLATION AND OPERATION MANUAL, V. 2.3
(SW VERSION 2.2.9)
© ROMANTIS 2010
5
www.romantis.com
ACRONYMS AND ABBREVIATIONS
8PSK
Phase-shift keying (PSK) is a digital modulation scheme that conveys data by
changing, or modulating, the phase of a reference signal (the carrier wave).
BCH
BCH code is a multilevel cyclic variable-length digital error-correcting code used for
correcting multiple random error patterns. BCH codes may also be used with
multilevel phase-shift keying whenever the number of levels is a prime number or a
power of a prime number.
BUC
Block Up-Converter (BUC) is used in the transmission (uplink) of satellite signals. It
converts a band (or "block") of frequencies from a lower frequency to a higher
frequency.
C/N
Carrier-to-noise ratio, often written as CNR or C/N, is the signal-to-noise ratio (SNR)
of a modulated signal.
CRTP
Compressing IP/UDP/RTP Headers for Low-Speed Serial Links
DSCP
Differentiated Services Code Point (DSCP) is a 6-bit field in the header of IP packets
for packet classification purposes. DSCP replaces the outdated IP precedence, a 3-bit
field in the Type of Service byte of the IP header originally used to classify and
prioritize types of traffic
DVB
Digital Video Broadcasting (DVB) is a suite of internationally accepted open standards
for digital television.
Eb/No
Eb/N0 (the energy per bit to noise power spectral density ratio) is an important
parameter in digital communication or data transmission. It is a normalized signal-to-
noise ratio (SNR) measure, also known as the "SNR per bit". It is especially useful
when comparing the bit error rate (BER) performance of different digital modulation
schemes without taking bandwidth into account.
EIRP
Effective Isotropically Radiated Power
ETSI
The European Telecommunications Standards Institute (ETSI) is an independent,
non-profit, standardization organization in the telecommunications industry
(equipment makers and network operators) in Europe, with worldwide projection.
FEC
In telecommunication and information theory, forward error correction (FEC) is a
system of error control for data transmission, whereby the sender adds redundant
data to its messages, also known as an error-correction code.
HTTP
Hypertext Transfer Protocol (HTTP) is an application-level protocol for distributed,
collaborative, hypermedia information systems.
HUB
Central Station of satellite network that is managing all the terminals and resources
HW
Hardware
ICMP
The Internet Control Message Protocol (ICMP) is used by networked devices to send
error messages—indicating, for instance, that a requested service is not available or
that a host or router could not be reached.
IESS
Intelsat Earth Station Standards
IP
IP is the usual abbreviation for Internet Protocol.
LDPC
Low-density parity-check (LDPC) code is a linear error correcting code, a method of
transmitting a message over a noisy transmission channel, and is constructed using a
sparse bipartite graph.
LNB
Low-noise block converter is the receiving converter installed at satellite antenna.
MCPC
Multiple Channels per Carrier
NMS
Network Management System
Node
Station
Terminal of satellite network which is able to receive information directly from other
network terminals
ODU
Out-Door Unit
QPSK
Phase-shift keying (PSK) is a digital modulation scheme that conveys data by
changing, or modulating, the phase of a reference signal (the carrier wave).
