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15 March 2010

Acronyms & Abbreviations List

# | A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z
To include an acronym or abbreviation to the list, you can submit it through our online form .


Numeric

µBGA . Micro ball grid array

fM . Phase modulation

3G . third generation

4FSK . four-level frequency shift-keying

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A

A/D . Analog-to-digital converter or conversion

AAL . ATM adaptation layer

AAL1 . ATM adaptation layer 1

AAL2 . ATM adaptation layer 2

ACI . Adjacent channel interference

ACL . access control list

ACPR . adjacent channel power response

ADC . See A/D

ADM . add/drop multiplexer

ADPCM . adaptive differential pulse code modulation

ADSL . Asymmetric digital subscriber line

AFC . automatic frequency control

AGC . automatic gain control

AGC . Automatic gain control

AIGaAs . aluminum gallium arsenide

ALC . Automatic level control (See AGC)

ALU . arithmetic logic unit

AM . Amplitude modulation

AMES . ATM mobility extension service

AM/PM . Amplitude modulation-to-phase modulation conversion

AM-VSB . AM-vestigial sideband modulation

ANSI . American National Standards Institute

AOI . ADSL over ISDN

AP . access point

ARQ . Automatic repeat request

ASCII . American Standard Code for Information Interchange

ASIC . Application-specific integrated circuit

ASK . amplitude shift keying

ASSP . application-specific integrated circuit

ATE . automatic test equipment

ATG . automatic test generation

ATM . Asynchronous transfer mode

AWGN . Additive white Gaussian noise

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B

b . bit

B . byte

BCD . Binary coded decimal

BCH . Bose-Chaudhuri-Hocquenghem

BER . Bit error rate or bit error ratio

BER . bit error rate

BERT . bit error rate tester

BGA . ball grid array

BiCMOS . bipolar complementary metal-oxide semiconductor

BIOS . basic input/output system

BOOTP . bootstrap protocol

bps . bits per second

BPSK . Binary phase shift keying

BSC . base station controller

BSS . base station system

BTA . basic trading area

BW . Bandwidth.

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C

C/I . Carrier-to-interference ratio

CA . call agent

CAD . computer aided design

CAE . computer aided engineering

CAP . Carrierless amplitude-phase modulation

CAS . channel associated signaling

CATV . Community access television

CBR . constant bit rate

CCA . clear channel assessment

CCI . Cochannel interference

CCSK . cyclic-code shift keying

CDF . Cumulative distribution function

CDMA . Code division multiple access

CDPD . Cellular Digital Packet Data

CEA . Consumer Electronics Associations

CELP . convolutional excitation linear predictive

CGSA . cellular geographic service area

CID . channel identifier

CMOS . complemetary metal-oxide semiconductor

CMTS . cable modem termination system

CNR . Carrier-to-noise ratio

CODEC . coder/ decoder

CPCI . CompactPCI

CPE . customer premises equipment

CPLD . complex programmable logic device

CPU . central processing unit

CRC . Cyclic redundancy check

CSMA . Carrier Sense Multiple Access

CSP . chip scale package

CSU . channel service unit

CT . computer telephony

CT-1 . cordles telephone - first generation

CT-2 . cordless telephone - second generation

CTIA . Cellular Telecommunications Industries Association

CVI . component video interface

CW . Continuous wave – An unmodulated carrier.

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D

D/A . Digital-to-analog converter

DAC . digital-to-analog converter

D-AMPS . Digital-Advanced Mobile Projects Agency

DARPA . Defense Advanced Research Projects Agency

dB . decibel

dBc . decibels with respect to carrier

dBi . antenna gain in decibels, with respect to isotropic antenna

dBm . decibels with respect to 1mW

DBSPK . differential binary phase-shift keying

DBS . direct broadcast satellite

dBW . decibels with respect to 1 W

DC . direct current

DC/DC . DC-to-DC converter

DCS . Digital Communications System

DCT . Discrete cosine transform

DDS . Direct digital synthesizer

DECT . Digital European Cordless Telecommunications

DFE . Decision feedback equalizer

DHCP . dynamic host configuration protocol

DIL . dual in-line

DIP . dual in-line package

DMA . direct memory access

DMM . digital multimeter

DMT . Discrete multitone

DPDT . double-pole, double-throw

DNL . Differential nonlinearity

DOCSIS . Data Over Cable Service Interface Specification

DPO . digital phosphor oscilloscope

DPSK . differential phase-shift keying

DQPSK . Differential quadrature phase shift keying

DRO . Dielectric resonator oscillator

DSL . digital subscriber line

DSO . digital storage oscilloscope

DSP . Digital signal processing

DS-SS . Direct sequence spread spectrum

DTC . digital traffic channel

DTE . data terminal equipment

DTMF . dual-tone multifrequency

DTV . Digital TV

DUT . device under test

DWDM . dense wavelength division multiplexing

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E

Eb/No . Energy-per-bit to noise density ratio

ECCM . Electronic counter-counter measures

ECL . emitter-coupled logic

ECM . Electronic counter measures

EDA . electronic design automation

EEPROM . electrically-eraseable programmable read-only memory

EFR . enhanced full rate (vocoder)

EHF . extremely high frequency

EIA . Electronic Industries Alliance

EIRP . effective isotropic radiated power

EMC . electromagnetic compatibilty

EMI . electromagnetic interference

EMR . electromagnetic radiation

ENOB . Effective number of bits

EPROM . erasable programmable read-only memory

EQ . equalizer

ESMR . enhanced specialized mobile radio

Es/No . Energy-per-symbol to noise density ratio

ETACS . extended Total Access Communications System

ETDMA . enhanced TDMA

ETSI . European Telecommunications Standards Institute

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F

FCC . Federal Communications Commission

FDD . frequency division duplexing

FDDI . fiber distributed data interface

FDMA . Frequency division multiple access

FEC . Forward error correction

FEXT . Far-end crosstalk

FFT . Fast Fourier transform

FH-SS . Frequency-hopping spread spectrum

FIFO . first-in, first-out

FIR . Finite impulse response

FLOPs . floating-point operations

FM . Frequency modulation

FN . frame number

FPGA . field-programmable gate array .

FSE . Fractionally spaced equalizer

FSK . Frequency shift keying

FTTC . Fiber-to-the-curb

FTTH . Fiber-to-the-home

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G

GaAs . Gallium arsenide

GDV . Group delay variation

GEO . geostationary earth orbit

GFSK . Gaussian frequency shift-keying

GaAs . Gallium arsenide

GHz . gigahertz

GMSK . Gaussian minimum shift keying

GPS . Global Positioning System

GSM . Global System for Mobile Communications

GUI . graphical user interface .

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H

HBT . heterojunction bipolar transistor

HDL . hardware description language

HDSL . High speed digital subscriber line

HDTV . High definition television

HEC . haeader error check

HEMT . high-electron mobility transistor

HF . High frequency

HFC . Hybrid fiber-coax

HIPERLAN . Higher-Performance Radio Local Area Network

HLR . home location register

HMI . human-machine interface

HPA . high power amplifier

HPC . handheld personal computer

Hz . hertz .

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I

I. In-phase

I/O . input/output

I/Q . in-phase/quadrature

IAD . integrated access device

IC . integrated circuit

iDEN . Integrated Dispatch Enhanced Network

IDLC . integrated digital loop carrier

IEEE 802.11 . Standard for WLAN devices

IEEE . Institute of Electrical and Electronic Engineers

IETF . Internet Engineering Task Force

IF . Intermediate frequency

IFFT . Inverse fast Fourier transform

IG . image generator

IIR. Infinite impulse response

IM . Iintermodulation

IMD. Intermodulation distortion

IMTS . Improved mobile telephone service

IN . intelligent network

InGaAs . indium gallium arsenide

InGaP . indium gallium phosphide

INL. Integral nonlinearity

IP . Internet Protocol

IP . intellectual property

IP . intercept point

IP2. Second-order intercept point

IP3. Third-order intercept point

IPSEC . Internet protocol security

IPX . Internet packet exchange

IrDA . Infrared Data Association

IS . interim standard

IS-54 . Interim Standard 54 (dual-mode TDMA/AMPS)

IS-95 . Interim Standard 95 (dual-mode CDMA/AMPS)

ISA . industry standard architecture

ISDN. Integrated services digital network

ISHM . International Society for Hybrid Microelectronics

ISI. Intersymbol interference

ISM . Industrial, Scientific and Medical

ISO . International Standards Organization

ITS . intelligent transportations systems

ITU . International Telelcommunications Union

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J

JDC . Japanese Digital Cellular

JPEG. Joint Photographic Experts Group

JTACS . Japanese Total Access Communications System

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K

kbps . kilobits per second

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L

L.2TP . Layer 2 Tunneling Protocol

LAN . local-area network

LATA . local access and transport area

LC . inductance-capacitance

LCD . liquid crystal display

LDMOS . laterally-diffused metal oxide silicon

LEC . local exchange carrier

LED . light emitting diode

LEO . low-earth orbit

Li-ion . lithium-ion

LMCS . Local Multipoint Communications System

LMDS . Local Multipoint Distribution Service

LNA . Low noise amplifier

LNB . low-noise block converter

LO . Local oscillator

LOS. line-of-sight

LPI . Low probability of intercept

LSB . Least significant bit

LSI. large scale integration

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M

MAC . media access control layer

MAC . multiply and accumulate

MAN . metropolitan area network

MBOK . M-ary bi-orthogonal keying

Mbps . megabit per second

MCM . multichip module

MCNS . Multimedia Cable Network System Specification

MDS . Maximum distance separable

MEO . medium-earth orbit

MESFET . metal-semiconductor field-effect transistor

MHz . megahertz

MIC . microwave integrated circuit

MIN . mobile identification number

MIPS . millions of instructions per second

ML . Maximum likelihood

MMDS . Multichannel multipoint distribution system

MMIC . monolithic microwave integrated circuit

MMDS . multichannel multipoint distribution service

MMTA . Multimedia Telecommunications Association

MOK . M-ary orthogonal keying

MOSFET . metal-oxide semiconductor field-effect transistor

MoU . memorandum of understanding

MPEG . Motion Picture Experts Group

MPSK . M-way phase shift keying

M-QAM . M-way quadrature amplitude modulation

MS . mobile station

MSA . metropolitan statistical area

MSB . Most significant bit

MSC . mobile switching center

MSE . Mean square error

MSK. Minimum shift keying

MSS . mobile satellite service

MTA . major trading area

MTSO . mobile telephone switching office

MUX . multiplexer

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N

NAB . National Association of Broadcasters

NADC . North American Digital Communications

NAK . negative acknowledgement

NAMPS . narrowband Advanced Mobile Phone Service

NBFM . narrow band frequency modulation

NCO . Numerically controlled oscillator

NCTA . National Cable Television Association – Organization serving the CATV industry.

NEXT . Near-end crosstalk

NF . Noise figure

NiCd . nickel cadmium

NiMH . nickel metal hydride

NIST . National Institute of Standards & Technology

NMT . Nordic Mobile Telephone

N-PCS . narrowband Personal Communications Service

NPR . noise power ration

NRZ . Not-return-to-zero

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O

OCDM . orthogonal code division multiplexing

OFDM . Orthogonal frequency division multiplexing

OOK . on-off keying

OQPSK . Offset quadrature phase shift keying

OSI . open system integration

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P

PA . power amplifier

PABX . public automatic branch exchange

PACS . Personal Advanced Communications Systems

pACT . Persoanl Air Communications Technology

PAE . power-added efficiency

PAL . programmable array logic

PBX . private branch exchange

PC . personal computer

PCB . printed-circuit board

PCIA . Personal Communications Industry Association

PCMCIA . Personal Computer Memory Card International Association

PCS . Personal Communications Service

PDA . personal digital assistant

PDC . Personal Digital Cellular

PDF . Probability density function

PECL . positive emitter-coupled logic

PG . Processing gain

PHEMT . pseudomorphic high-electron-mobility transistor

PHP . Personal HandyPhone

PHS . Personal HandyPhone System

PHY . physical layer

PICMG . PCIU Industrial Computer Manufacturer's Group

PIN . personal identification number

PIN . positive intrinsic negative (diode)

PLCC . plastic leaded-chip carrier

PLD . programmable logic device

PLL . Phase-locked loop

PM . Phase modulation

PMC . personal mobile communicator

PMC . PCI mezzanine card

PN . Pseudorandom noise

POP . stands for population

POS . packet over SONET

POTS . Plain old telephone system

p-p . peak-to-peak

PPM . parts per million

PPM . pulse-position modulation

PPP . point-to-point

PPTP . point-to-point tunneling protocol

PQFP . plastic quad-leaded flatpack

PRN . pseudorandom noise

PSD . power spectral density

PSK . phase-shift keying

PSTN . public-switched telephone network

PVC . permanent virtual connection

PWM . pulse width modulation

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Q

Q . Quadrature-phase

QAM . Quadrature amplitude modulation

QFP . quad flatpack

QoS . quality of service

QPSK . Quadrature phase shift keying

QSOP . quarter-sized outline package

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R

RAID . redundant arrats of independent drives

RAM . random access memory

RARP . reverse address resolution protocol

RBOC . regional Bell operating company

RCC . radio common carrier

RF . Radio frequency

RFC . request for comment

RFI . radio frequency interference

RFID . radio frequency identification

RISC . reduced instruction set computer

RMS . root mean square

ROM . read-only memory

RS . Reed-Solomon

RSA . rural service area

RSSI . rreceived signal-strength indicator

RTP . real-time protocol

RX . Receiver

RxBPF . receive bandpass filter

RZ . Return-to-zero

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S

S/I . Signal-to-interference

SAAL . signaling adaptation layer

SAR . segmentation and reassembly

SAW . Surface acoustic wave

SBC . single-board computer

SCADA . supervisory control and data-acquisition systems

S-CDMA . Synchronous code division multiple access

SCO . synchronous connection oriented

SCTE . Society of Cable Telecommunications Engineers

SDH . Synchronous digital hierarchy

SDMA . Space Division Multiple Access

SER . Symbol error rate

SFDR . Spurious free dynamic range

SIA . Satellite Industry Association

SID . Society of Information Displays

SiGe . silicon germanium

SIM . subscriber identity module

SINAD . Signal-to-noise-and-distortion

SLIC . subscriber line IC

SMD . surface-mount package

SMDS . switched multi-megabit data service

SMP . surface-mount package

SMPTE . Society of Motion Picture and Telelvision Engineers

SMR . specialized mobile radio

SMS . short message service

SMT . surface-mount technology

SMTP . simple mail transport protocol

SNMP . simple network management protocol

SNR . Signal-to-noise ratio

SOC . system-on-a-chip

SOHO . small office/ home office

SOI . silicon-on-insulator

SOIC . small outlien integrated circuit

SONET . Synchronous Optical Network

SOS . silicon-on-sapphire

SPDT . single-pole, double-throw

SPICE . sSimulation Program with Integrated Circuit Emphasis

SPM . Spurious phase modulation

SPX . sequenced packet exchange

SQNR . Signal-to-quantization noise ratio

SRAM . static random-access memory

SS7 . signaling system 7

SSB . Single sideband

SWAP . Shared Wireless Acess Protocol

SWR . standing wave ratio

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T

T & M . test and measurement

TACS . Total Access Communication System

TCM . Trellis-coded modulation

TCP/IP . Transmission Control Protocol/ Internet Protocol

TCXO . temperature-compensated crystal oscillator

TDD . Time Division Duplexing

TDMA . Time division multiple access

TETRA . Trans-European Trunked Radio System

TFTP . trivial file transfer protocol

THD . Total harmonic distortion

TIA . Telecommunications Industry Association

TWTA . Travelling wave tube amplifier

Tx/Rx . transmit/receive

Tx . Transmitter

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U

UART . universal asynchronous receiver/transmitter

UDP . user datagram protocol

UHF . Ultra-high frequency

UML . universal markup language

UMTS . Universal Mobile Telephone Service

USART . universal synchronous asynchronous receiver transmitter

USB . universal serial bus

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V

VAR . value-added resellers

VBR . variable bit rate

VC . venture capitalist

VC . virtual channel

VCO . Voltage-controlled oscillator

VCXO . voltage-controlled crystal oscillator

VDSL . Very high-speed digital subscriber line

VESA . Video Electronics Standards Association

VHDL . very-high integrated-circuit hardware description

VHF . very high frequency

VLSI . Very large scale integration

VNA . vector network analyzer

vocoder . voice coder

VoFR . voice over frame relay

VoIP . voice over IP

VPN . virtual private network

VPSK . variable phase-shift keying

VSAT . very small aperture terminal

VSELP . vector sum excited linear predictive

VSWR . Voltage standing wave ratio

VTOA . voice and telephony over ATM

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W

WACS . Wireless Access Communications System (Bellcore)

WAN . wide area network

WARC . World Administrative Radio Council

WARN . wide area reference network

W-CDMA . wideband CDMA

WCS . Wireless Communicatiosn Service

WIN . wireless intelligent network

WLAN . wireless local area network

WLANA . Wireless LAN Alliance

WLIF . Wireless LAN Interoperability Forum

WLL . wireless local loop

WPAN . wireless personal area network

WPBX . wireless private branch exchange

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X

xDSL . You-name-it digital subscriber line

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Y

None Available

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Z

ZF . Zero-forcing


If you think we left an acronym off our list, you can submit it through our online form .


Click on a letter to go to that part of the acronym list

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