Wireless LANs

Wireless LAN

Table of Contents

Introduction .4

History of Wireless LANs .4

Architecture .6

Stations . 7

Basic Service 7

Extended Service .7

Distribution System .8

Wireless LANs Technology .8

Narrowband .8

Spread Spectrum .8

Direct Sequence Spread Spectrum .9

Infrared Technology .10

Wireless LANs Configuration .10

How Wireless LAN Works .10

Peer-to-Peer .11

Clients and Access Points .12

Multiple Access Points and Roaming .12

Extension Point .12

Directional Antenna .12

Advantages , Disadvantages and Applications .13

Customer Considerations

and Summary .15

References .17

Introduction

A wireless LAN or wireless local area network can be considered a supple system of data communications being implemented to serve as an alternative , or as an extension to , for a wired ' Local Area Network Local Area Network or LAN is the relative linking of two computers or more using an OFDM modulation type technology or a spread spectrum that enables the communication between the devices on a limited range of area . This eventually provides the users with such mobility to move from one place to another within the specified range . Utilizing the applications of the RF or radio frequency technology , the wireless LANs are capable of transmitting and receiving data through air , thus lessening the eventual requirements for a physical connection in the form of cables and wires . Therefore , the wireless LAN technology combines user mobility and flexible data and information connectivity (Proxim 1998 ,

.24

The technology brought about by the wireless LANs have consequently gained an intense reputation in various forms of vertical markets...