Massive MIMO has become a very hot topic and it may not be entirely clear to everyone what the benefits are of having massive number of antennas on a base station. With the video below I try to visualize some key properties of massive MIMO and the origin of the large gains in spectral efficiency and energy efficiency. All in about two minutes.
The video is a bit rough around the edges and does not contain any sound. These things may be corrected in a future release.
Video published on YouTube: