A 3d MU‑MIMO Precoding Method Based on Orthogonal Joint Codebook Set
A precoding and precoding vector technology, applied in the field of precoding, can solve the problems of not considering three-dimensional spatial characteristics, limited CCI suppression ability, etc., and achieve the effect of suppressing co-channel interference, improving overall performance, and strong precoding gain.
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[0021] The present invention is described below in conjunction with specific examples.
[0022] figure 1 It is a system block diagram of the 3D MU-MIMO precoding method based on the orthogonal joint codebook set in the present invention. The base station adopts an n×m-dimensional planar antenna array structure, where n represents the number of rows of the planar antenna array, m represents the number of columns of the planar antenna array, and n=m. Each transmitting antenna is required to be able to process information in the horizontal and vertical dimensions at the same time. The number of receiving antennas at the user end is represented by r. The signal received by the jth user can be expressed as:
[0023]
[0024] The received signal consists of three parts, among which, H j W j x jIndicates the useful signal part received by the receiver, Indicates the interference received by j users from other user signals, and nj represents the noise signal, which is subje...
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