A Novel Beam Tracking Scheme in RIS for Wideband THz Communication Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-03-03 DOI:10.1109/LCOMM.2025.3547435

Abdulrahman S. Dughri;Taissir Y. Elganimi;Khaled M. Rabie

引用次数: 0

Abstract

Terahertz (THz) massive multiple-input multiple-output (mMIMO) has recently gained significant attention because of its ability to deliver a high data rate and offer a high capacity. In this letter, a novel sub-surface of sub-arrays (SSoSA)-based beam tracking scheme is proposed to track mobile users in reconfigurable intelligent surface (RIS)-aided wideband THz mMIMO systems. By considering the sub-connected phase-delay-phase architecture, the proposed scheme can simultaneously track the physical directions of users, unlike traditional schemes that generate one frequency-independent beam in each time slot. Simulation results show that the proposed scheme offers near-optimal achievable rate performance with low training overhead.

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一种适用于宽带太赫兹通信系统的RIS波束跟踪新方案

太赫兹（THz）大规模多输入多输出（mMIMO）由于其提供高数据速率和高容量的能力，最近受到了极大的关注。在本文中，提出了一种新的基于子阵列子表面（SSoSA）的波束跟踪方案，用于在可重构智能表面（RIS）辅助的宽带太赫兹mimo系统中跟踪移动用户。通过考虑子连接相位-延迟-相位结构，该方案可以同时跟踪用户的物理方向，而不像传统方案在每个时隙产生一个频率无关波束。仿真结果表明，该方案具有较低的训练开销和接近最优的可达速率性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.