Linux-UWB Project aims to develop a complete Ultra-Wide-Band stack for Linux Kernel. They're also working on WUSB and WiNET.
Part of the code is already done and hosted in a Mercurial Tree (it should be git :-p) available in: http://bughost.org/repos.hg/uwb.hg
Anyone is invited to join this work by pointing to http://linuxuwb.org, checking out the code and looking for TODO and FIXME strings in source code.
The person who's in front of the Project is Iñaky Perez-Gonzales from Intel.
There's not much to say here about the project, all you should do now is point to their website, clone the code and start contributing.