Comparison analysis between IEEE 802.11a/b/g/n

802.11 refers to a family of specifications developed by the IEEE for wireless LAN technology. IEEE accepted the specification for 802.11 in 1997. Wireless Local Area Network (WLAN) has become popular in the home due to ease of installation, and the increasing popularity of laptop computers. WLAN is based on IEEE 802.11 standard and is also known as Wireless Fidelity (WiFi) [1]. The task groups within the 802.11 working group have produced few extensions to the original specifications. The products of these extensions are named after the task group and the original specification for example, 802.11b is an extension developed by the task group b. The most popular extensions of 802.11 specifications are 802.11b, 802.11a, 802.11g and 802.11n. This article represents the major differences between various 802.11 standards, their operation, interoperability, and deployment constraints.