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Wi-Fi short for “wireless fidelity


. INTRODUCTION

Wi-Fi short for “wireless fidelity”—is the commercial name for the 802.11 products that have flooded the corporate wireless local area network (WLAN) market and are becoming rapidly ingrained in our daily lives via public hotspots and digital home networks. It is a trademark of the Wi-Fi Alliance, founded in 1999 as Wireless Ethernet Compatibility Alliance (WECA), comprising more than 300 companies, whose products are certified by the Wi-Fi Alliance, based on the IEEE 802.11 standards (also called Wireless Lan (WLAN) and Wi-Fi). Wi-fi is a wireless technology that uses radio frequency to transmit data through the air.A Wi-Fi enabled device such as a PC game console, mobile phone, MP3 player or PDA can connect to the Internet when within range of a wireless network connected to the Internet. The coverage of one or more interconnected access points called a hotspot can comprise an area as small as a single room with wireless-opaque walls.There are three types of wireless technology, the 802.11b, the 802.11a, and the 802.11g. The first two are more commonly used, compared to the last one. The difference of the first two is that the 802.11a is newer compared to the other and is about five times faster than the 802.11b. The advantage of the 802.11g technology is that it is backwards compatible with both the 802.11a and the 802.11b technology. And this is a big step forward in the wireless networking world.