Wireless Network System for an IT Training Centre

Masters
Assignment
Technology
Pages 14 (3514 words)
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Wireless LAN is a computer networking technology that uses Radio Frequency (RF) as a connecting medium instead of wires and cables (Khayat, 2002). The need for a wireless LAN arose due to the requirement of mobility of users while staying connected to the network…

Introduction

This information is then transmitted through air with the help of a transmitter and received at the other end through a receiver and demodulated. Since both transmission and reception of the signals has to be carried out at the same point, therefore a device known as an 'Access Point' (AP) is used which is a simple transmitter/receiver or transceiver. By assigning different frequencies to different users many users can access the network simultaneously without interfering. As is evident, the access to a wireless network can be gained only if the users are having devices which have wireless facility. These devices such as notebook computers and tablet PC's are widely available in the market and their prices have fallen by large amounts in recent times making them affordable.
Depending on the designing technology used WLAN's are mainly of three types. 'Narrowband wireless LAN's', 'Spread Spectrum wireless LAN's' and 'Infrared wireless LAN's'. Narrowband WLAN's, as is understood from the name, use narrowband signal for communication. Therefore the speeds achieved are low in this case but the problem of interference is greatly reduced as is the case with narrowband signals. The problem of low speeds is solved by the Spread Spectrum WLAN's which use wideband signals. ...
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