Abstract: There is provided mechanisms for downlink symbol-level precoding as part of multiuser MISO communication. A method is performed by a network node. The method comprises obtaining a data vector of a current time instant to be precoded. The data vector comprises data symbols for 1 users. The current time instant corresponds to a single symbol. The method comprises precoding the obtained data vector by determining an output vector for the data vector of the current time instant. Determining the output vector for the current time instant comprises searching for a data vector of a previous time instant that is co-linear with the data vector of the current time instant according to a co-linearity factor. When such a data vector of the previous time instant is found, the output vector is equal to an output vector of the previous time instant multiplied with the co-linearity factor.

Abstract: The invention provides a method and device for sending K data messages simultaneously from a data transmission device to K receivers, over a Multiple Input Single Output, MISO, channel. The transmitter uses a Faster-than-Nyquist signaling rate. By making use of spatio-temporal channel interference model at the transmitter, the benefits of FTN in terms of effective rate and energy efficiency do not come at the expense of increased receiver complexity.

Abstract: The invention provides a method and device for sending K data messages simultaneously from a data transmission device to K receivers, over a Multiple Input Single Output, MISO, channel. The transmitter uses a Faster-than-Nyquist signaling rate. By making use of spatio-temporal channel interference model at the transmitter, the benefits of FTN in terms of effective rate and energy efficiency do not come at the expense of increased receiver complexity.