Patent ID: 8693574

Claim:
Method for determining a precoding matrix for precoding symbols to be transmitted to a plurality of wireless devices by a node of a wireless communication system, wherein the precoding matrix comprises a precoding vector for each wireless device of the plurality of wireless devices, wherein each precoding vector comprises a precoding element for each transmit antenna of a plurality of transmit antennas of the node, wherein each precoding element represents a phase shifter being able to shift a phase of a symbol to be transmitted through the corresponding transmit antenna to the corresponding wireless device by a phase angle, the method comprising: calculating a plurality of interference strength indicators for different phase angles, wherein the different phase angles are applied successively to a precoding element of a precoding vector for the calculation of the interference strength indicators, wherein an interference strength indicator is calculated based on a precoding matrix comprising the precoding element considering the respective different phase angle; and selecting for the precoding element of the precoding vector a phase angle corresponding to a calculated interference strength indicator fulfilling a predefined interference strength criterion.