| 摘要 |
Embodiments of the present invention provide a method for determining a precoding matrix indicator, a receiving device, and a sending device. The method for determining a precoding matrix indicator includes: selecting, by a receive end, a precoding matrix W from a codebook based on a reference signal sent by a transmit end, where the precoding matrix W is a product of two matrices W1 and W2, where the W1 includes N B block matrices X i , N B ‰¥ 1, and the W1 is indicated as: W 1 =diag { X 1 ,..., X N B }, where 1 ‰¤ i ‰¤ N B , and a column x i,j of each block matrix X i is a Kronecker kronecker product of a first vector A ij and a second vector B ij , that is, X ij = A ij Š— B ij ; and sending, by the receive end, a precoding matrix indicator PMI corresponding to the precoding matrix W to the transmit end, so that the transmit end obtains the precoding matrix W according to the PMI. According to the method for determining a precoding matrix indicator, the receiving device, and the sending device in the embodiments of the present invention, precoding precision can be improved, and therefore, a system throughput is improved. |
