Free space optics would be my technology of choice for short distance, high bandwidth, high density connections.<p>Nearly unlimited spectrum. The &#x27;tower&#x27; side could be essentially a &#x27;floodlight&#x27;. And you don&#x27;t even have to tassle with the FCC AFAIK.<p>It has the distance and weather issue as millimeter wave tech, but it doesn&#x27;t have the bandwidth constraints.<p>Outside of that, there is not a viable technology I&#x27;m aware of that can do wireless data distribution in a high density, multi-gigabit environment. There is simply not enough available RF spectrum in the bands that can tolerate weather and atmospheric conditions over distances that would be relevant here.