Improved Iterative Phase Based Hybrid Precoding with Low-Resolution Phase Shifter

被引:0
|
作者
Li M.-Z. [1 ,2 ]
Liu N. [1 ]
机构
[1] School of Computer and Information Security, Guilin University of Electronic Technology, Guilin, 541004, Guangxi
[2] School of Electronic Information Engineering, Shanghai Dianji University, Pudong, Shanghai
来源
Liu, Ning (335872413@qq.com) | 1600年 / Univ. of Electronic Science and Technology of China卷 / 49期
关键词
Hybrid precoding; Millimeter wave; Multiple-input multiple-output; Phase shifters;
D O I
10.12178/1001-0548.2019167
中图分类号
学科分类号
摘要
In the millimeter-wave massive multiple-input multiple-output (Massive-MIMO) system, the analog precoding algorithm with low-resolution phase shifter has a high algorithm complexity. To cope with the computational complexity problem, an improved iterative phase hybrid precoding algorithm is proposed. It decomposes the analog precoding optimization matrix into column vectors one by one, and uses the second-order rank matrix to obtain the suboptimal optimization function approximately. Then, the optimization function is transformed into a summation form and the optimal phase is obtained by iterative convergence. Meanwhile, in order to maximize hardware efficiency, an analog beamforming scheme with 1 bit resolution phaser is designed. Theoretical analysis and simulation results show that the proposed algorithm has lower computational complexity and improving spectral efficiency. © 2020, Editorial Board of Journal of the University of Electronic Science and Technology of China. All right reserved.
引用
收藏
页码:548 / 554
页数:6
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