Systems and methods for performing implicit sounding in multi-user multiple input multiple output (MU-MIMO) systems

A system for performing beamforming in a multiple-user-multiple-input-multiple-output (MUMIMO) system, the system comprising:

• control circuitry configured to:
• receive, at an MUMIMO access point, an MUMIMO packet from a station of a plurality of stations, wherein the MUMIMO access point has a first number of antennas, and wherein the station has a second number of antennas less than the first number of antennas;
• obtain, from the MUMIMO packet, uplink channel state information representing an uplink channel between the station and the MUMIMO access point, the uplink channel including signals transmitted from the station using the second number of antennas;
• compute, based on the uplink channel state information, downlink channel state information representing a downlink channel between the MUMIMO access point and the station, the downlink channel including signals transmitted from the MUMIMO access point using the first number of antennas;
• and
• transmit data from the MUMIMO access point to the plurality of stations using the first number of antennas based on the downlink channel state information.