In SU-MIMO transmission: The cell is serving only one user on a given time-frequency resource, maybe over multiple streams. The multiplexing gain is limited by the minimum of the number of transmitting and receiving antennas. Well supported in current standard specifications like LTE Release 8/9.  In MU-MIMO transmission: Multiple users are served in parallel over … Continue reading What is the difference between SU-MIMO and MU-MIMO?