Glossary

NI WLAN Analysis Toolkit 18.0 Help

Edition Date: October 2018

Part Number: 373724K-01

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Prefixes

Symbol Prefix Value
n nano 10 -9
µ micro 10 -6
k kilo 10 3
M mega 10 6

B

BCC binary convolutional code
burst A continuous signal with idle interval or quiet time at both ends. In the toolkit, one frame of the signal is called one burst.

C

CCK complementary code keying
channel The waveform after MIMO combining (spatial multiplexing) of spatial streams.
chip EVM Each spreading bit is called a chip. The symbols are spread by a chip sequence. The error between the ideal signal and the received signal in each chip period is averaged over the signal to give the chip EVM.
CRC cyclic redundancy check
CW continuous wave
CPE common pilot error

D

DAC digital-to-analog converter
DBPSK differential binary phase-shift keying
DQPSK differential quadrature phase-shift keying
DSSS-OFDM direct sequence spread spectrum-orthogonal frequency division multiplexing
DSSS direct sequence spread spectrum
DUT device under test

E

ENBW equivalent noise bandwidth
ERP extended rate physical layer
ERP-OFDM extended rate physical layer-orthogonal frequency division multiplexing
ERP-PBCC extended rate physical layer-packet binary convolutional coding
EVM error vector magnitude

F

FCS frame check sequence
FFT fast Fourier transform
FEC forward error correction

G

Gated spectrum A spectrum of the signal acquired in the time interval when the signal is active. This acquisition can be triggered by the transition of the signal from an inactive state to an active state. The gate is preferred to be the interval when the signal is active.

H

header checksum Performs CRC16 check on the received header.
HT high-throughput
HT-SIG high-throughput SIGNAL

I

I in-phase
I/Q The translation of the magnitude and phase data of a signal from a polar coordinate system to a complex Cartesian (X,Y) coordinate system.

L

LDPC low-density parity check
LTF long training field
LTS long training symbol

M

MAC medium access control
MCS modulation and coding scheme
MIMO multiple input multiple output
MPDU MAC protocol data unit

O

OBW occupied bandwidth
OFDM orthogonal frequency division multiplexing

P

PAPR peak-to-average power ratio
PBCC packet binary convolutional coding
PLCP physical layer convergence procedure
PPDU procedure protocol data unit
PSD power spectral density
PSK phase-shift keying
PvT power versus time

Q

Q quadrature-phase

R

RBW resolution bandwidth
RMS root mean square

S

spatial stream An encoded and modulated stream of data before MIMO combining (spatial multiplexing).
STBC space-time block coding
STF short training field

T

TDMS technical data management streaming

V

VBW video bandwidth
VHT very high throughput

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