7
Wireless Basics
(continued)
Standards-Based Technology
The DWL-G680 Wireless Cardbus Adapter utilizes the new
802.11g
standard.
The IEEE
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, utilizing
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
(
O
rthogonal
F
requency
D
ivision
M
ultiplexing)
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-
G680 will automatically sense the best possible connection speed to ensure the greatest
speed and range possible.
802.11g offers the most advanced network security features available today, including:
WPA/WPA2 , 802.1x, TKIP, AES and Pre-Shared Key mode
. These security features
are explained in more detail in the
Introduction
and the
Features
section of this manual.
The DWL-G680 is backwards compatible with 802.11b devices. This means that if you
have an existing 802.11b network, the devices in that network will be compatible with
802.11g devices at speeds up to 11Mbps in the 2.4GHz range.
The DWL-G680 is compatible with 802.11g and 802.11b wireless products, which include
:
D-Link
Air
DWL-650,D-Link
Air
Plus DWL-650+,
D-Link
Air
Premier
®
DWL-G550
2.4GHz Wireless Cardbus Adapter used with laptop computers
D-Link
Air
DWL-520, D-Link
Air
Plus DWL-520+
2.4GHz Wireless PCI cards used with desktop computers
D-Link
Air
Plus DWL-900AP+, D-Link
Air
Plus Xtreme G
DWL-2100AP
2.4GHz Wireless Access Points
D-Link
Air
Plus DI-614+, DI-714P+
2.4GHz Wireless Routers
TM
