Wireless Basics
(continued)
Installation Flexibility
- Wireless technology allows the network to go where
wires cannot go.
Reduced Cost-of-Ownership
- While the initial investment required for
wireless LAN hardware might be higher than the cost of wired LAN hardware,
overall installation expenses and life-cycle costs will be significantly lower.
Long-term cost benefits are greatest in dynamic environments requiring
frequent moves, adds, and changes.
Scalability
- Wireless LAN systems can be configured in a variety of
topologies to meet the needs of specific applications and installations.
Configurations are easily changed and range from peer-to-peer networks
suitable for a small number of users to full infrastructure networks of
thousands of users that allow roaming over a broad area.
D-Link
AirPro
Wireless LAN products include:
802.11a 5GHz Wireless Cardbus Adapters used with laptop
computers (DWL-A650)
802.11a 5GHz Wireless PCI cards used with desktop computers
(DWL-A520)
802.11a 5GHz Wireless Access Points (DWL-5000AP)
Standards - Based Technology
The IEEE 802.11a standard designates that devices operate at an optimal
data rate of 54 Megabits per second. This means 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. D-Link
AirPro
products will
automatically sense the best possible connection speed to ensure the
greatest speed and range possible with the technology.
