Not knowing anything about this topic, I found this interesting. However, the article is from 2014, have there been any recent developments? (I found a few recent news stories, but nothing that stood out to me.)
It seems the commercial applications of this research are still a bit behind Wi-Fi in terms of bandwidth, thus confined to a niche market of non-RF environments. The list of publications from Haas’s group suggests that massive MIMO will be the way forward – every lightbulb an access point.