802.11B: Also known as Wi-Fi, 802.11b wirelessly connects devices as far as 91m apart at up to 11Mb per second, close to the speed of a digital subscriber line or cable modem. Wi-Fi can create ad hoc connections between devices but is most commonly used to tap into existing networks in offices, schools, airport lounges and coffee shops. It also uses the 2.4GHz band of the unlicensed spectrum, which sometimes creates interference with Bluetooth.
802.11A: Dubbed Wi-Fi 5, 802.11a is much faster than its market predecessor, running at up to 54Mb per second. Wi-Fi 5, which is just beginning to appear in PC cards and wireless base stations, eliminates some interference problems by operating on 5GHz, a less crowded band of the spectrum.
802.11G: Still in development, this standard is intended as a higher-speed successor to 802.11b, providing data speeds comparable to those of 802.11a on devices created for the 2.4GHz band.
HOMERF: Originally intended for home networking, it can operate up to a distance of 49m in the 2.4GHz band. Recent improvements have increased its data speeds to a potential 10Mb per second, but HomeRF lost ground when Intel decided to pursue other standards.
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