2.4 GHz ISM Band

UNII-1 Band

UNII-2 Band

UNII-2 Extended

UNII-3 Band

Narrowband

Spread spectrum

Delay spread

Intersymbol interference (ISI)

Dwell time

Hop Time

Direct Sequence Spread Spectrum

High-Rate DSSS

Baker code

Complementary Code Keying (CCK)

Differential binary phase shift keying (DBPSK)

Differential quadrature phase shift keying (DQPSK)

PBCC

OFDM

How many subcarriers in OFDM

Error correction used in OFDM

Modulation used in OFDM

Higher OFDM data rates modulation method

QAM

How many channels in 2.4 GHz

2.4 GHz Channels

DSSS / HR-DSSS channel width

Number of 20 MHz channels in 5 GHz for usage

Usable 40 MHz channels in 5 GHz