what is wifi wireless communication?

WiFi (Wi-Fi) IEEE 802.11b wireless networking specification is a variant of IEEE 802.11 networking standard, the maximum bandwidth of 11 Mbps, weak signal or interference cases, the bandwidth adjustable to 5.5Mbps, 2Mbps and 1Mbps, bandwidth automatically adjusts to effectively protect the network's stability and reliability. Its main features are: fast, high reliability, in the open area, communication distance of up to 305 meters, in the closed area, communication distance of 76 meters to 122 meters, easily with the existing wired Ethernet network integration, group net lower cost. Wi-Fi WirelessFidelity, Wi-Fi technology and Bluetooth technologies, belong to the same in the office and home use of short-range wireless technology. The technology used to make near the 2.4GHz band, the band is currently licensed radio spectrum is still useless. Its current standards that can be used there are two, namely, IEEE802.11a and IEEE802.11b. Because the technology has its own advantages, so by the manufacturers of all ages.

Wifi wireless communication is another way to access internet. Nowadays the computers and cellphones will have wifi device to connect it. Wifi connection is free of charge. Usually you can find it in the airport, McDonald's, Starbuck and so on. I love China