Installation Guide

AirHarmony-4200 DC (Internal Filters) Installation Guide
UGD-D01196 Airspan Commercial and Internal Use 45
B Abbreviations
Term
Expansion
3GPP
3rd Generation Partnership Project, responsible for LTE
ABS
Almost Blank Subframes
ACS
Adjacent Channel Selectivity is a measurement of a receiver's ability to process a
desired signal while rejecting a strong signal in an adjacent frequency channel. ACS
is defined as the ratio of the receiver filter attenuation on the assigned channel
frequency to the receiver filter attenuation on the adjacent channel frequency.
AWGN
Additive White Gaussian Noise is a channel model in which the only impairment to
communication is a linear addition of white noise with a constant spectral density
and a Gaussian distribution of amplitude.
BER
Bit Error Rate
CN
Core Network
CP
Cyclic Prefix
CTC
Convolution Turbo Code is a high-performance forward error correction (FEC)
code
dB
Decibel. A logarithmic unit used to describe a ratio (such as power ratio in radio
telecommunications)
dBm
An abbreviation for the power ratio in decibels (dB) of the measured power
referenced to one milliwatt (mW). It is used as a convenient measure of absolute
power because of its capability to express both very large and very small values in
a short form.
eNodeB
Evolved Node B, is the element in E-UTRAN of LTE.
ESP
Encapsulating Security Payloads (ESP) provide confidentiality, data-origin
authentication, connectionless integrity, an anti-replay service (a form of partial
sequence integrity), and limited traffic-flow confidentiality
E-UTRAN
Evolved UMTS Terrestrial Radio Access Network, is the air interface of 3GPP's Long
Term Evolution.
EVM/RCE
The Error Vector Magnitude or EVM (sometimes also called Receive Constellation
Error or RCE) is a measure used to quantify the performance of a digital radio
transmitter or receiver. It is measured in dB or percentage (%) – the lower the
better.
FDD
Frequency-Division Duplexing. A transceiver mode where the transmitter and
receiver operate at different carrier frequencies.
GNSS
Global Navigation Satellite System is a term used to describe a satellite navigation
system with global coverage. There are currently two fully operational GNSSs – the
US GPS and the Russian GLONASS
GTP-U
GPRS Tunneling Protocol for User data is a relatively simple IP based tunneling
protocol which permits many tunnels between each set of end points
HPBW
Half Power BandWidth is the angular separation in an antenna, in which the
magnitude of the radiation pattern decreases by 50% (or -3 dB) from the peak of
the main beam
ICS
In-channel selectivity is a measure of the receiver’s ability to receive a wanted
signal at its assigned Resource Block locations in the presence of an interfering
signal
IPSec
Internet Protocol Security is a protocol suite for securing Internet Protocol (IP)
communications by authenticating and encrypting each IP packet of a
communication session
LED
Light Emitting Diode
LTE
Long Term Evolution