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802.11a -- an extension to 802.11 that applies to wireless LANs
and provides up to 54Mbps in the 5GHz band. 802.11a uses an
orthogonal frequency division multiplexing encoding scheme
rather than FHSS or DSSS.
•
802.11b (also referred to as
extension to 802.11 that applies to wireless LANS and provides 11
Mbps transmission (with a fallback to 5.5, 2 and 1 Mbps) in the
2.4 GHz band. 802.11b uses only DSSS. 802.11b was a 1999
ratification to the original 802.11 standard, allowing wireless
functionality comparable to Ethernet.
•
802.11g - A extension of the IEEE 802.11 standard for wireless
networking hardware. The 802.11g specifications used by Linksys
specify a maximum data transfer rate of 54Mbps using OFDM
modulation, an operating frequency of 2.4GHz, backward compatibility
with IEEE 802.11b devices and WEP encryption for security.
© 2003 Cisco Systems, Inc. All Rights Reserved.
Knowledge Check
802.11 High Rate
or Wi-Fi) -- an
Model No : WAP51AB
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