| 摘要 |
According to one aspect of the invention, an arrangement for calibrating transmission and/or reception of signals in a radio communications system is realised, the arrangement comprising transceiving means (TX,RX) each connected to one of an array of antenna elements (#1...#n), a coupling network (CN) arranged between the transceiving means (TX,RX) and the antenna elements (#1...#n), and connected to calibration transmitting and/or receiving means (TXc,RXc) for feeding test signals to and/or receiving the test signals from the coupling network (CN), a calibration processor for determining variations of the test signals in the transceiving means (TX,RX), and a beamforming processor for taking into account the determined variations for beamforming and/or determination of direction of arrival of respectively transmitted or received radio signals by the antenna elements (#1...#n). <IMAGE> |
