There are some works and even products on distributed antenna systems for WiFi. E.g. [1]. MU-MIMO can benefit from the distributed antennas due to the condition

There are some works and even products on distributed antenna systems for WiFi. E.g. [1]. MU-MIMO can benefit from the distributed antennas due to the condition of the MIMO channel matrix. If is should be standards-compliant, you will be limited in functionality. E.g. the timing-constraints of ACK and CSMA limit the length of the antenna cable, though that should not prevent your idea. I guess, it will be more problematic to realize compliant CSMA, as you would need to perform clear channel assessment on each individual antenna? Anyways, distributed MU-MIMO seems to get traction. We are working on it ourselves. [1] https://conferences2.sigcomm.org/co-next/2014/CoNEXT_papers/p29.pdf https://conferences2.sigcomm.org/co-next/2014/CoNEXT_papers/...