WPI-100G PCI Adapter
Wireless Broadband Anywhere
9
to the game’s user guide for more information.
What is the IEEE 802.11b standard?
It is one of the IEEE standards for wireless networks. The 802.11b standard allows
wireless networking hardware from different manufacturers to communicate, provided that
the hardware complies with the 802.11b standard. The 802.11b standard states a maximum
data transfer rate of 11Mbps and an operating frequency of 2.4GHz.
What is ad-hoc mode?
When a wireless network is set to ad-hoc mode, the wireless-equipped computers are
configured to communicate directly with each other. The ad-hoc wireless network will not
communicate with any wired network.
What is infrastructure mode?
The FCC and their counterparts outside of the U.S. have set aside bandwidth for
unlicensed use in the ISM (Industrial, Scientific and Medical) band. Spectrum in the
vicinity of 2.4 GHz, in particular, is being made available worldwide. This presents a truly
revolutionary opportunity to place convenient high-speed wireless capabilities in the hands
of users around the globe.
What is Spread Spectrum?
Spread Spectrum technology is a wideband radio frequency technique developed
by the
military for use in reliable, secure, mission-critical communications systems. It is designed
to trade off bandwidth efficiency for reliability, integrity, and security. In other words,
more bandwidth is consumed than in the case of narrowband transmission, but the trade-
off produces a signal that is, in effect, louder and thus easier to detect, provided that the
receiver knows the parameters of the spread-spectrum signal being broadcast. If a receiver
is not tuned to the right frequency, a spread-spectrum signal looks like background noise.
There are two main alternatives, Direct Sequence Spread Spectrum (DSSS) and Frequency
Hopping Spread Spectrum (FHSS).
What is roaming?
Roaming is the ability of a portable computer user to communicate continuously while
moving freely throughout an area greater than that covered by a single access point. Before
using the roaming function, the workstation must make sure that it is the same channel
number with the access point of dedicated coverage area.
Would the information be intercepted while transmitting on air?
WLAN features two-fold protection in security. On the hardware side, as with Direct
Sequence Spread Spectrum technology, it has the inherent security feature of scrambling.
On the software side, WLAN offers the encryption function (WEP) to enhance security
and access control.
