D-Link Air Xpert DWL-AG650 Manual page 8

Wireless Basics (continued)
Standards-Based Technology
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The DWL-AG650 Wireless Cardbus Adapter utilizes the 802.11a, 802.11b and
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draft 802.11g standard.
The IEEE draft 802.11g standard is an extension of the 802.11b standard. It
increases the data rate up to 54 Mbps within the 2.4GHz band. The 802.11a
standard also increases the data rate up to 54 Mbps, but within the 5GHz band.
Both 802.11a and 802.11g utilize OFDM technology.
This means that in most environments, within the specified range of this device,
you will be able to transfer large files quickly or even watch a movie in MPEG
format over your network without noticeable delays. This technology works by
transmitting high-speed digital data over a radio wave utilizing OFDM (Orthogonal
Frequency Division Multiplexing) technology. OFDM works by splitting the radio
signal into multiple smaller sub-signals that are then transmitted simultaneously
at different frequencies to the receiver. OFDM reduces the amount of crosstalk
(interference) in signal transmissions. The D-Link DWL-AG650 will automatically
sense the best possible connection speed to ensure the greatest speed and
range possible.
The DWL-AG650 offers the most advanced network security features available
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today, including: WPA and 802.1x.
In addition to its compatibility with 802.11g and 802.11a devices, the DWL-AG650
is compatible with 802.11b devices. This means that if you have an existing
802.11b network, or a network with a mixture of 802.11g, 802.11a and 802.11b,
the devices in that network will be compatible with the DWL-AG650.
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