April 17, 2012

What is Wi-Fi?

Wi-Fi is a term used generally for Wireless Local Area Networking. Wi-Fi is a quick and easy formula of networking various devices wirelessly.

Wireless networking is normally done as follows - A wireless adapter in the computer converts digital data to radio frequency (Rf) waves and transmits these waves using an antenna. This signal is picked up by a wireless router in the vicinity that converts the Rf waves back to digital data and transfers the data over the Internet straight through an Ethernet connection.

Wireless networking uses the frequencies of 2.4Ghz or 5Ghz. Wireless networking offers a low-cost and cable-free clarification for Local Area Networks. As long as each computer has a wireless adapter, the same wireless router can be used by any computers to join together to the Internet. This relationship is very reliable provided the bandwidth limit is not exceeded, in which case users may touch intermittent relationship to the Internet.




Wi-Fi is absolutely a certification issued by an alliance consisting of over 300 companies for wireless devices that use the Ieee 802.11 standard for networking. The Wi-Fi standard is a global one. The certification costs are steep but it ensures seamless interfacing of devices with Wi-Fi certification.

Wi-Fi also allows peer-to-peer connections between wireless devices, more generally known as an ad-hoc network that is of great point in gaming and pervasive computing applications.

Whenever a Wi-Fi enabled gadget such as a laptop, mp3 player or a mobile phone enters the coverage of a wireless network connected to the Internet, Internet way is ready for that device. A set of interconnected way points is called a hotspot - many hotspots are ready in public spaces like airports, parks and offices.

With a singular Internet relationship and a wireless hot spot in a home, cable-free Internet connectivity can be provided to complicated wireless-capable devices. As wireless-enabled hardware gets cheaper and cheaper, Wi-Fi networks are emerging as the preferred selection for home networking.

The range of a Wi-Fi equipment is typically between 30-95m. Wireless repeaters are sometimes used to expand the range of Wi-Fi equipment. In addition, Wi-Fi devices normally suffer from interference caused by devices like Microwave ovens that work in the 2.4Ghz range. Other issue plaguing Wi-Fi equipment is the high power consumption. This becomes an issue in conveyable equipment running on batteries.

What is Wi-Fi?

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