Wi-Fi is known as Wireless Fidelity, is a wireless technology specially owned by the Wi-Fi Alliance. Wi-Fi aims to enhance the interoperability of wireless local area network products based on the IEEE 802.11 standards.
It enabled devices such as gaming consoles, personal computers and other mobile computers can connect to the Internet when they are within the range of a wireless network connected to the internet.
The area covered by one or more interconnected access points is called a hotspot. Hotspot can cover as little as a single room with wireless-opaque walls. It can also cover many square miles covered by overlapping access points. These hotspots are usually found at airports, restaurants, hotels, schools and libraries.
Some of the most popular Wi-Fi standards used given below :
Routers which incorporates a Wi-Fi access point are often used in homes and other premises. They provide internet access and inter networking to all devices connected wireless or by cable. Devices supporting Wi-Fi can also be connected in ad-hoc mode fro client to client connections without a router. Wi-Fi also enables wireless voice applications. Outdoor applications may utilize true mesh topologies.
Some of the disadvantage of Wi-Fi as compared to other standards are higher power consumption and limited. Excessive Wi-Fi access points can also Wi-Fi pollution which results in interference.
It enabled devices such as gaming consoles, personal computers and other mobile computers can connect to the Internet when they are within the range of a wireless network connected to the internet.
The area covered by one or more interconnected access points is called a hotspot. Hotspot can cover as little as a single room with wireless-opaque walls. It can also cover many square miles covered by overlapping access points. These hotspots are usually found at airports, restaurants, hotels, schools and libraries.
Some of the most popular Wi-Fi standards used given below :
- 802.11a - The 802.11a standard uses OFDM (Orthogonal Frequency Division Multiplexing) and operates at 5GHz frequency with a minimum data rate of 54 Mbps.
- 802.11b - The 802.11b standard uses CCK (Complimentary Code Keying) and operates at 2.4 GHz with a maximum data rate of 11 Mbps. It is the slowest and the least expensive Wi-Fi standard in existence.
- 802.11g - The 802.11g standard operates at 2.4 GHz with a maximum data transfer rate of 54 Mbps.
- 802.11n - The 802.11n is a successor of the 802.11g standard. It operates at a frequency of 2.4 GHz with a maximum data transfer rate of 140 Mbps.
- 802.16 - It is also popularly known as WiMax, 802.16 combines the benefits of both broadband and wireless. Fixed WiMax and mobile WiMax are the types of WiMax technologies that are in use currently.
Routers which incorporates a Wi-Fi access point are often used in homes and other premises. They provide internet access and inter networking to all devices connected wireless or by cable. Devices supporting Wi-Fi can also be connected in ad-hoc mode fro client to client connections without a router. Wi-Fi also enables wireless voice applications. Outdoor applications may utilize true mesh topologies.
Some of the disadvantage of Wi-Fi as compared to other standards are higher power consumption and limited. Excessive Wi-Fi access points can also Wi-Fi pollution which results in interference.
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