Obtaining a precoding matrix for a method and apparatus

The invention provides a method and device for acquiring a pre-coded matrix. Network equipment comprises a plurality of groups of cross polarized linear array antennas. The method comprises the following steps of: acquiring first channel indication information, wherein the first channel indication information indicates a first code word; acquiring second channel indication information, wherein the second channel indication information indicates a second code work; and determining a pre-coded matrix according to the first channel indication information and the second channel indication information, wherein the first code word and/or the second code word comprise phase deviation and/or amplitude difference among the plurality of groups of the cross polarized linear array antennas. The network equipment is used for determining that the first code word and the second code word of the pre-coded matrix comprise the phase deviation and the amplitude difference among the cross polarized linear array antennas and considering the phase deviation and the amplitude difference among the cross polarized linear array antennas during transmission of downlink data according to the pre-coded matrix, so that the receiving quality of transmitted data can be enhanced, and the system performance is effectively improved.