Multi-User MIMO (MU-MIMO) is a set of technologies with multiple inputs and multiple outputs for wireless communication, where a group of users or wireless devices communicate with each other, each equipped with one or more antennas. Orthogonal Frequency-Division Multiple Access (OFDMA) is a multi-user version of the popular digital modulation scheme Orthogonal Frequency-Division Multiplexing (OFDM). This enables the simultaneous transmission of low data rates from multiple users.