Technique for Full-Duplex Transmission in Many-Antenna MU-MIMO Systems

An apparatus for wireless communications, comprising:

• an estimator configured to obtain an estimate of a self-interference channel between a plurality of transmit antennas at the apparatus and a plurality of receive antennas;
• a circuit configured to generate a precoder using the estimate of the self-interference channel based on minimizing a self-interference power related to the self-interference channel, the self-interference power being present at the plurality of receive antennas;
• the precoder configured to generate a modified version of transmission data for minimizing the self-interference power by projecting the transmission data onto a defined number of singular vectors of the self-interference channel that correspond to the defined number of smallest singular values of the self-interference channel;
• and
• a transmitter configured to transmit the modified version of the transmission data via the plurality of transmit antennas, wherein
• receiving data via the plurality of receive antennas occurs simultaneously with the transmitting the modified version of the transmission data from the transmitter.