I read the paper. It doesn't require an electrical engineering degree to understand (just common sense and a basic tech level). Basically, from my understanding, DIDO works differently than wireless. Wi-fi send a wave form to your device and as such many wi-fi access point that are close sending wave form in the same frequency will create interference and reduce your bandwidth (speed?).
DIDO works by offloading the wave form creation to a server. Basically the server calculates the precise waveform needed so that if you have 5 access point broadcasting, when all those 5 wave form hit your device the overlap will create a perfect waveform for you (and the same happens with other devices).
It is very interesting and I think it will work... This is just mind-boggling!!!