2.1 The WLAN System
The basic entity of the WLAN is a radio cell, consisting
of a hub station and mobile stations [5]. The hub station
is responsible for providing connectivity between mobile
stations in the cell, and from mobile stations to the wired
backbone. The WLAN, shown in Figure 1, consists of one
or more radio cells, along with wired terminals,
connected to the wider network over a wired backbone.
Communication between the hub and mobile stations is
via a radio link, using a coded multi-tone modulation