OK this is a little frustrating that the documentation only goes as far as saying class n but not stating its capabilities.
It seems the Edison's design switches between tx and rx on the same antenna as 2.4, 5 and Bluetooth. that seems odd to me as it would be limiting the communications by having to share the antenna. wouldn't it be better to have two separate antennas to enable multiple streams?
im under the impression that 802.11n requires at minimum mimo 1x1 being an antenna for rx and tx to be classified as n
I'm now looking to add a second wifi transceiver and bridging the wifi interfaces to enable a full duplex communication.
Does anyone/intel have a recommended part for this?
I've never used another interface to set Wi-Fi connectivity on the Edison, nevertheless there are some threads that talks about it, I'll leave a few of them bellow, they might be of your interest:
WiFi USB dongle for Galileo (This is a Galileo thread, but still it could help you)
USB 3G dongle with Edison (This thread talks about a 3G dongle, but I believe it could also interest you)