| 摘要 |
The present invention provides a method for determining a precoding matrix indicator, a user equipment, and a base station. The method comprises: receiving a first reference signal set sent by a base station; determining one or more intermediate matrices according to the first reference signal set, and reporting, to the base station, a first index used for indicating the intermediate matrices; receiving a second reference signal set sent by the base station; determining a recoding matrix according to the second reference signal set, and reporting, to the base station, a precoding matrix indicator used for indicating the precoding matrix, the precoding matrix being a product of two matrices W1and W2, W=W1W2, W1 being a block diagonalizable matrix, W1=diag{X1,X2}, the block matrix &KHgr;i being a kronecker product of two matrices Ci and Di, Xi=Ci ⊗Di, i=1,2, and the matrix Ci or the matrix Di being a function of one or more intermediate matrices. In this manner, the transmission performance of an active antenna system can be improved. |
