Re: Where's the proof... In the Literature and FCC
No published proof it works. Just Hypetastic white papers.
Plenty of fail published.
Google "Hidden Transmitter Syndrome"
The "Database" solution (aka "White Space Radio" MkII) actually doesn't work in reality even though the FCC accepted the revised version. The ONLY way it could work is if EVERY TV also is connected to Internet and the Database.
The 2nd problem is social. It makes "White space" a fail. People will "hack" the database connectivity limits and add power amplifiers and "stronger" aerials for faster speed (if signal is better you can run say 64QAM instead of 16QAM) or more range, thus causing more interference as the spectrum ISN'T empty or it could be licensed.
Try getting any Mobile operator to accept 3rd party "White Space" Radio on their locally "unused" channel(s) and see how far you can get.
TV is now a soft touch. Africa even softer (Just offer a "good" deal), Chinese Government gets good deals on resources in Africa where Huawei does "cheap" infrastructure.