3D (three-dimensional) MU-MIMO (multiple user-multiple input multiple output) precoding method based on orthogonal joint codebook set
A technology of precoding and precoding vector, applied in the field of precoding, can solve the problems of limited CCI suppression capability and no consideration of three-dimensional spatial characteristics, and achieve the effects 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] y i = H j W j X j + H j Σ i ...
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