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Ultra-Wide Band And Bluetooth Working Together
judgecorp writes "This week the Bluetooth people adopted UWB as a future fast connection. What not many people have spotted is - the big winner in this could be UWB.. Sure, Bluetooth is a slow protocol for headsets, and UWB is, potentially, much much more. But Bluetooth is established. It's in phones and regulators understand it. If Bluetooth likes UWB, that could really be a major factor to convince the people that are blocking UWB - operators and regulators outside the US - that UWB is safe to use."
Heh. They're expanding the descriptors too fast.. we went straight from broadband to ultrawideband. What's next, megahugeband? Kinda running out of options after that. What happened to moderation? Something like broaderband.
Starts getting ridiculous after that: superultrawideband, hyperbroadband, megabroadwidebroadband... uberband? Guess we could move on to Roseanneband, or Kirstieband.
Or maybe we could just skip all that and go straight to plaidband.
Hokey statistics and ancient misconceptions are no match for a good thought in your head, kid!
UWB has been the latest buzz for a while. Reminded me when I, Cringely was all over it making it out to be the next big thing. That was in 2002 though. Time will tell....
sure I'll have a sig.
While your at it: How do you call quoting in verbatim without citing the source?
"Between strong and weak, between rich and poor [...], it is freedom which oppresses and the law which sets free"
Looks like an unattributed rip of part of the FAQ from this site:
http://www.multispectral.com/
UWB's combination of broader spectrum and lower power improves speed and reduces interference with other wireless spectra. In the United States, the Federal Communications Commission (FCC) has mandated that UWB radio transmissions can legally operate in the range from 3.1 GHz up to 10.6 GHz, at a limited transmit power of -41dBm/MHz. Consequently, UWB provides dramatic channel capacity at short range that limits interference. When used as intended, the emerging short- and medium-range wireless standards vary widely in their implicit spatial capacities. For example: IEEE 802.11b has a rated operating range of 100 meters. In the 2.4GHz ISM band, there is about 80MHz of useable spectrum. Hence, in a circle with a radius of 100 meters, three 22MHz IEEE 802.11b systems can operate on a non-interfering basis, each offering a peak over-the-air speed of 11Mbps. The total aggregate speed of 33Mbps, divided by the area of the circle, yields a spatial capacity of approximately 1,000 bits/sec/square-meter. Bluetooth, in its low-power mode, has a rated 10-meter range and a peak over-the-air speed of 1Mbps. Studies have shown that approximately 10 Bluetooth "piconets" can operate simultaneously in the same 10-meter circle with minimal degradation yielding an aggregate speed of 10Mbps [3]. Dividing this speed by the area of the circle produces a spatial capacity of approximately 30,000 bits/sec/square-meter. IEEE 802.11a is projected to have an operating range of 50 meters and a peak speed of 54Mbps. Given the 200MHz of available spectrum within the lower part of the 5GHz U-NII band, 12 such systems can operate simultaneously within a 50-meter circle with minimal degradation, for an aggregate speed of 648Mbps. The projected spatial capacity of this system is therefore approximately 83,000 bits/sec/square-meter. UWB systems vary widely in their projected capabilities, but one UWB technology developer has measured peak speeds of over 50Mbps at a range of 10 meters and projects that six such systems could operate within the same 10-meter radius circle with only minimal degradation. Following the same procedure, the projected spatial capacity for this system would be over 1,000,000 bits/sec/square-meter.