成都大学学报（自然科学版）2023，Vol.42Issue(4)：372-377,6.DOI:10.3969/j.issn.1004-5422.2023.04.007
基于虚拟子阵列的多用户大规模MIMO混合预编码
Hybrid Precoding Based on Virtual Subarray for Multiuser Massive MIMO Systems
摘要
Abstract
In order to obtain more spatial diversity gain in multiuser massive multiple-input multiple-out-put(MIMO)systems,a hybrid precoding scheme based on virtual subarray(VS A)for partially-connect-ed structure(PCS)is proposed in this paper.The scheme allows the RF chain to be connected with the transmitting antennas dynamically.The analog precoding matrix is firstly designed by extracting the con-jugate phase of the air interface channel,and an algorithm maximizing the VSA gain element-by-element is proposed to obtain greater analog precoding gain.Then a zero-forcing digital precoding is performed for the equivalent channel.Simulation results show that the VSA scheme achieves much higher spectral effi-ciency than the conventional PCS ones in Rayleigh fading channels,and is also insensitive to the phase quantized error.关键词
混合预编码/大规模多入多出系统/部分连接结构/虚拟子阵列Key words
hybrid precoding/massive MIMO system/partially-connected structure/virtual subarray分类
信息技术与安全科学引用本文复制引用
张雷,高俊枫,向博..基于虚拟子阵列的多用户大规模MIMO混合预编码[J].成都大学学报（自然科学版）,2023,42(4):372-377,6.基金项目
四川省科技计划重点研发基金资助项目(2021YFG0151) （2021YFG0151）
