重庆邮电大学学报（自然科学版）2024，Vol.36Issue(2)：220-228,9.DOI:10.3979/j.issn.1673-825X.202304180112
宽带太赫兹大规模MIMO系统中的混合预编码
Hybrid precoding in wideband terahertz large-scale MIMO systems
摘要
Abstract
To solve the problem of beam splitting caused by increased bandwidth and antenna number in broadband tera-hertz large-scale multiple input multiple output(MIMO)communication system,this paper constructs a novel hybrid pre-coding communication model integrating time delay.This model addresses the hardware constraints related to time delay val-ues and introduces an efficient joint optimization algorithm for broadband terahertz hybrid precoding,considering both ana-log and digital precoding matrices.The optimization process involves minimizing the difference between optimal and equiva-lent analog precoding matrices,converting the joint optimization problem into a target optimization task.This transformation enables the resolution of the global optimal solution by converting the non-convex problem into an equivalent convex one.Simulation results demonstrate that the proposed algorithm achieves near-optimal achievable rate performance and enhances energy efficiency in broadband terahertz MIMO systems.关键词
太赫兹/多输入多输出(MIMO)/混合预编码/波束分裂Key words
terahertz/multiple input multiple output(MIMO)/hybrid precoding/beam splitting分类
信息技术与安全科学引用本文复制引用
李贵勇,贾璐,宋利利..宽带太赫兹大规模MIMO系统中的混合预编码[J].重庆邮电大学学报（自然科学版）,2024,36(2):220-228,9.基金项目
重庆市自然科学基金项目(cstc2021jcyj-msxmX0454) The Natural Science Foundation of Chongqing(cstc2021jcyj-msxmX0454) （cstc2021jcyj-msxmX0454）
