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Glossary and Acronyms


2G Second Generation mobile phone system (GSM, IS-95)
3G Third Generation mobile phone system
4G Fourth Generation mobile phone system
AC Alternating Current (Frequency above 0 Hz)
ADSL Asymmetric Digital Subscriber Line
alpha Path loss exponent (rate of path loss change with distance)
AM Amplitude Modulation
APR Access Point Repeater
ASK Amplitude Shift Keying
AWGN Additive White Gaussian Noise
b/s/Hz Bits per second per hertz (unit of spectral efficiency)
BER Bit Error Rate
bps Bits per second
BPSK Binary Phase Shift Keying
BS Base Station
CD Compact Disc
CDMA Code Division Multiple Access
CF Crest Factor (peak to average power ratio of the RF envelope)
DAB Digital Audio Broadcasting
dB Decibel (ratio in log scale)
dBc Decibel relative to main signal power
dBm Decibel relative to 1 milliwatt
DC Direct Current (0 Hz)
DDS Direct Digital Synthesiser
DFT Discrete Fourier Transform
DMT Discrete Multi-Tone
DPSK Differential Phase Shift Keying
DSBSC Double Side Band Suppressed Carrier
DS-CDMA Direct Sequence Code Division Multiple Access
DSP Digital Signal Processing
DSSS Direct Sequence Spread Spectrum
DVB Digital Video Broadcasting
DVB-C Digital Video Broadcasting - Cable
DVB-S Digital Video Broadcasting - Satellite
DVB-T Digital Video Broadcasting - Terrestrial
EBNR Energy per Bit to Noise Ratio
FDM Frequency Division Multiplexing
FEC Forward Error Correction
FFT Fast Fourier Transform
FIR Finite Impulse Response (digital filter)
FM Frequency Modulation
Fs Sample Frequency
FSK Frequency Shift Keying
GA Genetic Algorithm
GHz Gigahertz - 10^9 Hz
GMSK Gaussian Minimum Shift Keying
GSM Global System for Mobile communications
HDTV High Definition Television
HiperLAN2 HIgh PErformance Radio Local Area Network, WLAN standard (Europe) based on OFDM, with a maximum data rate of 54 Mbps. Similar to IEEE802.11a
Hz Hertz (cycles per second)
ICI Inter-Carrier Interference
IEEE802.11a WLAN standard (U.S.) based on OFDM, with a maximum data rate of 54 Mbps. Similar to HiperLAN2
IEEE802.11b WLAN standard (U.S.) based on DSSS, with a maximum data rate of 11 Mbps
IF Intermediate Frequency
IFFT Inverse Fast Fourier Transform
IMD Inter-Modulation Distortion
IQ Inphase Quadrature
ISI Inter-Symbol Interference
ISM Industrial Scientific Medical
IS-95 Mobile phone standard using CDMA transmission method.
JCU James Cook University
K Kelvin
kbps Kilo bits per second (10^3 bps)
kHz Kilohertz - 10^3 Hz
km Kilometer (10^3 m)
Lambda - RF wavelength
LO Local Oscillator
LOS Line Of Sight
m Metre
Mbps Mega bits per second (10^6 bps)
MHz Megahertz - 10^6Hz
MPEG Moving Picture Experts Group (Video compression standard)
NF Receiver Noise Figure
OBO Output power BackOff
OFDM Orthogonal Frequency Division Multiplexing
PAPR Peak to Average Power Ratio
PC Personal Computer
PDA Personal Digital Assistant
Pi (3.14159265 .)
PLL Phase Locked Loop
PM Phase Modulation
PRC Peak Reduction Carriers
PRS Pseudo Random Sequence
PSK Phase Shift Keying
QAM Quadrature Amplitude Modulation
QOS Quality Of Service
QPSK Quadrature Phase Shift Keying
RAKE Multiple tap multipath equalisation for CDMA
RC Raised Cosine (Guard Period)
RF Radio Frequency
RMS Root Mean Squared
SFN Single Frequency Network
SHARC Super Harvard ARChitecture, Digital Signal Processor by Analog Devices)
SIR Signal to Interference Ratio
SNR Signal to Noise Ratio
SSB Single Side Band
SSPA Solid State Power Amplifier
TDM Time Division Multiplexing
TDMA Time Division Multiple Access
TWTA Travelling Wave Tube Amplifier
m Micrometre (10^-6 m)
UMTS Universal Mobile Telecommunications System
s Microsecond (10^-6 s)
VSB Vestigal Side Band
W Watt (energy per unit time, one joule per second)
W-CDMA Wide-band Code Division Multiple Access
WLAN Wireless Local Area Network
WLL Wireless Local Loop
Copyright 2001 Eric Lawrey, Last updated: June 26, 2002