Thanks Nexty for this! The US Federal Communication Commission has given a cautious go-ahead to the operation and marketing of ultra-wideband (UWB) technology. What is it i hear you cry?!
UWB devices operate by employing very narrow or short duration pulses which result in very large or wideband transmission bandwidths. With appropriate technical standards, UWB devices can operate using spectrum occupied by existing radio services without causing interference - at least in theory - so squeezing more use out of scarce radio spectrum resources.
The technology has great potential but is very much in its infancy. The regulator proposes to closely monitor its interference effects, particularly on federal government operations, prior to introducing more flexible standards, "within the next six to twelve months".