ThisamendmentdefinesmodificationstoboththeIEEE802.11physicallayer(PHY)andtheIEEE802.11mediumaccesscontrol(MAC)sublayersothatmodesofoperationcanbeenabledthatarecapableofmuchhigherthroughputs,withamaximumthroughputofatleast100Mb/s,asmeasuredattheMACdat