A Radio Transmitter with a Neural Network, and Related Methods and Computer Programs

A method, comprising:

• receiving, at a radio transmitter device, uplink channel information;
• determining, with the radio transmitter device, resource element specific precoding matrices for a downlink channel based on the received uplink channel information;
• and
• generating, with the radio transmitter device, transmit antenna specific output signals for the transmit antenna array based on the determined resource element specific precoding matrices and symbols to be transmitted;
• wherein the determining of the resource element specific precoding matrices for the downlink channel based on the received uplink channel information is performed with applying a neural network to the received uplink channel information, the neural network comprising at least one neural network layer executable to process the received uplink channel information to output the resource element specific precoding matrices for the downlink channel.

A non-transitory program storage device readable with an apparatus, tangibly embodying a program of instructions executable with the apparatus to perform at least the following:

• receiving uplink channel information;
• determining resource element specific precoding matrices for a downlink channel based on the received uplink channel information;
• and
• generating transmit antenna specific output signals for the transmit antenna array based on the determined resource element specific precoding matrices and symbols to be transmitted;
• wherein the determining of the resource element specific precoding matrices for the downlink channel based on the received uplink channel information is performed with applying a neural network to the received uplink channel information, the neural network comprising at least one neural network layer executable to process the received uplink channel information to output the resource element specific precoding matrices for the downlink channel.