毫米波大规模MIMO系统混合连接天线结构的混合预编码算法研究  

HYBRID PRECODING ALGORITHM FOR HYBRID-CONNECTED STRUCTURE OF MILLIMETER WAVE MASSIVE MIMO SYSTEM

作　　者：周围[1] 马茂琼 陈星宇 冉靖宣 彭洋 Zhou Wei;Ma Maoqiong;Chen Xingyu;Ran Jingxuan;Peng Yang(School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Chongqing Key Laboratory of Mobile Communications Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《计算机应用与软件》2023年第6期83-88,共6页Computer Applications and Software

基　　金：国家自然科学基金面上项目(61771085);重庆市基础与前沿研究计划项目(cstc2015jcyjA40040)。

摘　　要：在大规模多输入多输出(Multiple Input Multiple Output,MIMO)系统中,混合连接天线结构结合全连接和部分连接的结构优势,能更好地平衡频谱效率和能量效率。但是当前该结构的混合预编码算法繁杂。针对这一问题,研究混合连接天线结构的低复杂度混合预编码算法设计。为了简化该结构的混合预编码算法,将信道矩阵划分成一系列子信道矩阵,分别对每一个子信道矩阵采用交替迭代矩阵分解(Alternating Iterative Matrix Decomposition,Alt-IMD)算法求解最优混合预编码矩阵。通过理论分析该算法复杂度,并且通过仿真实验分别对全连接天线结构、部分连接天线结构混合预编码算法、混合预编码算法的频谱效率和能量效率进行对比。结果表明:与当前混合预编码算法相比,该算法能获得更高的频谱效率和能量效率。In a large-scale multiple input multiple output(MIMO)system,a hybrid-connected structure integrates the advantages of a fully-connected structure and a partially-connected structure,which can better balance the relationship between spectral efficiency and energy efficiency.However,the existing hybrid precoding algorithm of this structure has a high complexity.To solve this problem,the design of low-complexity hybrid precoding algorithm for hybrid-connected structure is studied.In order to simplify the hybrid precoding algorithm of the structure,the channel matrix was divided into a series of sub-channel matrices,and the alternating iterative matrix decomposition(Alt-IMD)algorithm was applied to obtain the optimal hybrid precoding matrix for each sub-channel matrix.The complexity of the algorithm was analyzed theoretically,and the spectrum efficiency and energy efficiency of algorithms for the fully-connected,the partially-connected structure and the proposed hybrid precoding algorithm were compared through simulation experiments respectively.The results show that the proposed algorithm can achieve higher spectral efficiency and energy efficiency than existing hybrid precoding algorithms.

关 键 词：毫米波 大规模多输入多输出 低复杂度 混合连接天线结构 交替迭代矩阵分解 

分 类 号：TP3[自动化与计算机技术—计算机科学与技术] TN929.5[电子电信—通信与信息系统]