DFS: radar pattern detector design proposal

Hi DFS developers,

now that we are starting to think about the design for DFS functionality, this is how we started implementing a common radar pattern detector within mac80211 at our company.

It is a pure proof-of-concept and not meant to be used for other than testing.

More info available at [1].

Cheers
Zefir

[1] http://wireless.kernel.org/en/developers/DFS/DetectorDesignNt