Hi,
I just saw it on hacker news that DARPA has announced a Spectrum
Challenge to program a software defined radio to dominate the spectrum
and
deploy the best protocol which performs best over other radios in
certain
pre defined conditions. It will start in January 2013 and the webpage is
http://www.darpa.mil/spectrumchallenge/
I am sure it is for expert communication system designers. I am a novice
in
gnuradio and interested in giving it a shot. Just wanted everybody in
the
group to know about it and have a look.