A FEW QUESTIONS
Do we really need yet another wireless technology?
A. Wireless distribution of everything from television programs, movies and games to
megabit intensive data files, you need a "fat pipe." That's what UWB provides. You also
need to be certain that the transfers won't interfere with other wireless
transmissions or be interfered with; and UWB provides that. Plus it's low power. We
need it because, while we've talked about routing video and other high bandwidth
applications around the home without the pain of cables and wires, we haven't been able
to do it because the current technologies, like WLAN just aren't fast enough. Ultrawideband,
also known as impulse or carrierless radio technology, is one of the most
promising radio technologies of our time. Unlike conventional radio systems, which operate
within a relatively narrow bandwidth, ultra-wideband operates across a wide range of
frequency spectrum by transmitting a series of extremely narrow (10 - 1000ps) and low
power pulses. The DARPA study panel, that coined the term ultra-wideband in the 1990's,
defines it as a system with the occupied bandwidth is greater than 25% of the center
frequency. Ultra-wideband should not be confused with spread spectrum technology, which
is used by other WLAN standards such as 802.11b.
What about Bluetooth?
A.Bluetooth, like UWB is a wireless personal area networking technology. The data
rates delivered are significantly different and therefore the application spaces addressed
by each technology are different. Like other application-specific technologies, it is likely
that UWB and Bluetooth could both be integrated into end-devices to serve these different
application spaces. Moreover data transfer rates differ as well.
How secure is the Ultra Wide Band (UWB) wireless technology
A.UWB was designed with security in mind. In fact, its signal is supposedly
indistinguishable from regular RF noise due to its pulse sequencing technology. It
communicates in very short bursts (measure in picoseconds or trillionths of a second), so a
receiver has to know exactly when to listen in order to pickup the signal -- something that,
at least for now, cannot be easily performed using "outside" equipment. It also has
interference and jamming protection built-in with the way it transmits signals across a
broad frequency spectrum. In addition, it has built-in encryption and physical security
through its location sensing technology