Wireless LANs

Abstract

There are three digital wireless technologies: CDMA (Code Division Multiple Access), TDMA (Time Division Multiple access), and GSM (Global System for Mobile Communication). Ethernet is a standard LAN protocol that operates at moderately high speeds and with inexpensive connection hardware can bring digital networking to almost an\ computer. Wireless LANs use electromagnetic airwaves (radio or infrared) to communicate information from one point to another without relying on any physical connection. Having a wireless LAN can benefit the user in various ways, being its major incentives an increase in mobility, flexibility, relative low cost and time saving. On the other hand, satellites are a very important source of communication, bringing the opportunity to transfer infonnation from any part of the world.