混合远近场太赫兹通信中波束色散分析及预编码设计  

Beam Split Analysis and Precoding Design for Hybrid Far-and Near-field Terahertz Communications

作　　者：赵笑洁 郝万明[1] 王芳[1] 杨守义[1] 黄崇文 ZHAO Xiaojie;HAO Wanming;WANG Fang;YANG Shouyi;HUANG Chongwen(School of Electrical and Information Engineering,Zhengzhou University,Zhengzhou 450001,China;College of Information Science and Electronic Engineering,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]郑州大学电气与信息工程学院,河南郑州450001 [2]浙江大学信息与电子工程学院,浙江杭州310027

出　　处：《无线电通信技术》2024年第1期143-151,共9页Radio Communications Technology

摘　　要：为解决宽带太赫兹通信中传统混合预编码架构中的波束色散问题,将时延器引入到该架构中,并研究基于时延器的混合预编码架构性能。讨论了混合远近场太赫兹通信中的波束色散问题,分析了引入时延器后的混合预编码架构及其性能,提出了一种基于远近场的混合预编码算法,对所提算法和传统的混合预编码算法进行了仿真。仿真结果表明,所提算法在性能上优于传统算法,可以有效缓解混合远近场中的波束色散。To solve the beam split problem in traditional hybrid precoding architecture for broadband terahertz communication,time delayers are introduced into this architecture and the performance of hybrid precoding architecture based on time delayers is studied.Specifically,the issue of beam split in mixed far-and near-field terahertz communication is first discussed.Next,a hybrid precoding a rchitecture and its performance are analyzed after introducing time delayers.Then,a hybrid precoding algorithm based on far-and near-field is proposed.Finally,simulations are conducted on the proposed algorithm and traditional hybrid precoding algorithm.Simulation results show that the proposed algorithm outperforms traditional algorithms in terms of performance,so it can effectively alleviate beam split effect in mixed far-and near-field.

关 键 词：远场 近场 混合远近场 混合预编码 波束色散 

分 类 号：TN820.1[电子电信—信息与通信工程] TN928