Global equalizer self interference cancelation for hybrid MIMO systems

A device comprising:

• a transceiver configured to concurrently transmit one or more signals over multiple transmit paths and receive one or more receive signals over multiple receive paths, the transceiver comprising multiple transmit antennas and multiple receive antennas;
• a processor operably connected to the transceiver, the processor configured to:
• determine an equalizer array comprising a predetermined channel model;
• and
• for at least one of the multiple receive antennas:
• receive one or more feedback signals from one or more power amplifiers associated with the one or more transmitted signals;
• calculate one or more estimated self-interference (SI) signals based on the one or more feedback signals using the equalizer array;
• and
• subtract the one or more estimated SI signals from the one or more receive signals to obtain one or more residual signals,
• wherein to determine the equalizer array, the processor is configured to broadcast second transmit signals on all of the multiple transmit antennas, and receive (i) second feedback signals associated with the second transmit signals and (ii) second receive signals received by the multiple receive antennas.

A non-transitory computer readable medium comprising program code that, when executed by a processor of a device, causes the device to:

• control a transceiver to transmit one or more signals, the transceiver configured to concurrently transmit over multiple transmit paths and receive over multiple receive paths, the transceiver comprising multiple transmit antennas and multiple receive antennas;
• determine an equalizer array comprising a predetermined channel model;
• and
• for at least one of the multiple receive antennas:
• receive one or more feedback signals from one or more power amplifiers associated with the one or more transmitted signals;
• calculate one or more estimated self-interference (SI) signals based on the one or more feedback signals using the equalizer array;
• and
• subtract the one or more estimated SI signals from one or more receive signals received at the at least one receive antenna to obtain one or more residual signals,
• wherein to determine the equalizer array, the program code causes the device to broadcast second transmit signals on all of the multiple transmit antennas, and receive (i) second feedback signals associated with the second transmit signals and (ii) second receive signals received by the multiple receive antennas.