ABBREVIATIONS AND ACRONYMS
ABBREVIATIONS AND ACRONYMS
AC
Alternating Current
ALC
Automatic Level Control
BDA
Bi-Directional Amplifier
BTS
Base Transceiver Station
DC
Direct Current
DCS
Digital Cellular System
EGSM
Enhanced Global System for Mobile Communications
EMC
Electro-Magnetic Compatibility
FET
Field-Effect Transistor
GSM
Global System for Mobile Communications
GSM-R
GSM - Railway
HPA
High Power Amplifier
IF
Intermediate Frequency
IP3
Third order Intercept Point
LNA
Low Noise Amplifier
MMIC
Monolithic Microwave Integrated Circuit
MS
Mobile Station
MTBF
Mean Time Between Failures
MU
Master Unit
NF
Noise Figure
OMC
Operation and Maintenance Center
OMT
Operation and Maintenance Terminal
PC
Personal Computer
PEP
Peak Envelope Power
PLL
Phase-Locked Loop
PSTN
Public Switched Telephone Network
RAM
Random Access Memory
RF
Radio Frequency
RL
Return Loss
RU
Remote Unit
SAW
Surface Acoustic Wave
SIM
Subscriber Identity Module
SPV
Supervision
TTL
Transistor, Transistor, Logic
UMTS
Universal Mobile Telecommunications System
UPS
Uninterruptible Power Supply
VCO
Voltage Controlled Oscillator