Ruckus 802.1x EAP support includes PEAP.
Under Configuration / Radio 2.4G (or 5G), and a WLAN tab, specify the Encryption Method = WPA, with the WPA Authentication of 802.1x,
and enter your Win2012 NPS server IP address, port 1812, and a Shared Secret in the Authentication Server fields.
Then when you connect a client, you'll use whatever supplicant method to enter your Userid/Password (for AD auth).