[ieatdots]

Maybe I'm wrong here. Looks like bladeRF and USRP B200-series have the bandwidth, sample rate, and data speed to do 802.11b.

Maybe some radio smartperson can clarify?

[nknighthb]

The USRP B200 sales page actually says it can be used for WiFi. It also says "up to" 56MHz of bandwidth -- if that's actually available in the 2.4 and/or 5GHz bands, it should be able to implement 802.11n which uses 20 or 40MHz channels.

(802.11ac is out of bounds, its channels are 80MHz minimum.)