Patent ID: 8903004
Filing Date: 2014-12-02
Classification: H04B

Abstract:
1. A precoding processing method, comprising: selecting, by a user equipment (UE), a codebook vector for performing precoding processing for data among a codebook set of N  and a second codebook vector  generated according to the first codebook vector, A is a (N sending, by the UE, an index number of the codebook vector to a base station; wherein: N  corresponding to K/2 codebooks in the K codebooks is respectively obtained by using an 8-dimensional discrete Fourier transformation codebook structure, and a number of discrete Fourier transformation groups is K/(2N  where A is a vector composed of first 4 elements in the 8×1 codebook vector, and B is a vector composed of last 4 elements in the 8×1 codebook vector; and a codebook design of the first codebook vector  utilizes a discrete Fourier transformation codebook structure; wherein the discrete Fourier transformation codebook structure is as follows: where superscript T represents a transpose operation, M is a number of dimensions of discrete Fourier transformation and M=8, with m=0, 1 . . . M−1 and n=0, 1 . . . M−1, G is the number of discrete Fourier transformation groups, with g=0, 1, . . . , G−1, and e