PMD (Physical Medium Dependent) sublayer

Defined in standard Modulation system Frequency band Data rates
IEEE 802.11 FH 2.4 GHz 1, 2 Mbit/sec
IEEE 802.11 DSSS 2.4 GHz 1, 2 Mbit/sec
IEEE 802.11a OFDM 5 GHz 6, 9, 12, 18, 24, 36, 48, 54 Mbits/sec
IEEE 802.11b HR/DSSS 2.4 GHz 5.5, 11 Mbit/sec