A RADIO TRANSMITTER WITH A NEURAL NETWORK, AND RELATED METHODS AND COMPUTER PROGRAMS

Radio transmitter devices and related methods and computer programs are disclosed. Uplink channel information is received at a radio transmitter device. The radio transmitter device determines resource element specific precoding matrices for a downlink channel based on the received uplink channel information. The radio transmitter device generates transmit antenna specific output signals for the transmit antenna array based on the determined resource element specific precoding matrices and symbols to be transmitted. 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 includes 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.