Wireless communication is exchange of information
between two or more devices that are not connected by an
electrical conductor. A wireless local area network
(WLAN) links two or more devices over a short distance
using a wireless distribution method, usually providing a
connection through an access point for internet access.
The use of technology spread-spectrum or
Orthogonal Frequency-Division Multiplexing (OFDM)
technologies may allow users to move around within a
local coverage area, and still remain connected to the
network [1], [2]. Using Wireless Local Area Network
users can access internet without pulling the cable
network.
WLAN can overcome the problem of lack of wired
network, because it has the advantage, as follows: