red Wireless Access Protocol, whose major and products adhering to it are acceptable for marketing application was setting up a wireless home network that all over the world. connects one or more computers with peripherals for the 802.11 covers the data link layer of lower-level soft- purposes of sharing files, modems, printers, and other ware, the physical layer hardware definitions, and the electronic devices, including telephones. In addition to interfaces between them. The connection between acting as a transparent wire replacement medium, it also application software and the wireless hardware is the permitted integration of portable peripherals into a MAC (medium access control). The basic specification computer network. The originators expected their system defines three types of wireless communication tech- to be accepted in the growing number of homes that have niques: DSSS (direct sequence spread spectrum), FSSS two or more personal computers. (frequency-hopping spread spectrum) and IR (infra-red). Following are the main system technical parameters: The specification is built SO that the upper application software doesn't have to know what wireless technique is Frequency-hopping 50 hops per second being used-the MAC interface firmware takes care of network that. In fact, application software doesn't have to know Frequency range 2.4 GHz ISM band that a wireless connection is being used at all and mixed wired and wireless links can coexist in the same network. Transmitter power 100 milliwatt Wireless communication according to 802.11 is con- Data rate 1 Mbps using 2FSK modulation ducted on the 2.400 to 2.4835 GHz frequency band that 2 Mbps using 4FSK modulation is authorized for unlicensed equipment operation in the Range Covers typical home and yard United States and Canada and most European and other countries. A few countries allow unlicensed use in only Supported stations Up to 127 devices per network a portion of this band. A supplement to the original Voice connections Up to 6 full-duplex conversatio