Deployment and Beamforming Design for RIS-Assisted Indoor Wireless Communication in Smart Home

IF 9.9 2区计算机科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Consumer Electronics Pub Date : 2026-08-01 Epub Date: 2026-03-04 DOI:10.1109/TCE.2026.3670401

Shuang Liang;Guangliang Ren

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引用次数: 0

Abstract

Reconfigurable intelligent surfaces (RISs) assisted indoor wireless communication for smart home is investigated to improve the communication coverage efficiency and spectral efficiency by designing deployment and beamforming. A two-stage communication scheme is proposed. In the first stage, RIS deployment is designed with the location information of long-term stationary obstacles to maximize the normalized effective coverage efficiency (NE-CE). Three RIS deployment algorithms are proposed, which are the Heuristic Deployment (H-D) algorithm, the Simulated Annealing Angle Optimization-based Deployment (SAAO-D) algorithm, and the Simulated Annealing-based Deployment (SA-D) algorithm. In the second stage, partial channel state information (CSI)-based beamforming is designed to ensure spectral efficiency while reducing the complexity of channel estimation. In this stage, terminal association and passive beamforming are designed based on the deployed RISs and terminal location information. Additionally, closed-form active beamforming is derived based on partial CSI. Simulation results demonstrate that the NE-CE of the proposed algorithm is 1.45 times higher than that of the existing scheme when deploying 2 RISs with 64 elements each. The spectral efficiency of the partial CSI-based beamforming scheme reaches 96.5% that of the perfect-CSI-based scheme with 3 obstacles and 3 RISs.

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智能家居中ris辅助室内无线通信的部署与波束成形设计

研究了可重构智能表面（RISs）辅助的智能家居室内无线通信，通过设计部署和波束形成，提高通信覆盖效率和频谱效率。提出了一种两阶段通信方案。第一阶段利用长期静止障碍物的位置信息设计RIS部署，使归一化有效覆盖效率（NE-CE）最大化。提出了三种RIS部署算法，分别是启发式部署（H-D）算法、基于模拟退火角度优化的部署（SAAO-D）算法和基于模拟退火的部署（SA-D）算法。第二阶段，设计基于部分信道状态信息的波束形成，在保证频谱效率的同时降低信道估计的复杂度。在此阶段，根据已部署的RISs和终端位置信息，设计终端关联和无源波束形成。在此基础上，推导了基于部分CSI的闭式有源波束形成。仿真结果表明，当部署2个包含64个元素的RISs时，该算法的NE-CE是现有方案的1.45倍。在3个障碍物和3个RISs条件下，部分csi波束形成方案的频谱效率达到了完全csi波束形成方案的96.5%。

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来源期刊

IEEE Transactions on Consumer Electronics 工程技术-电信学

CiteScore

7.70

自引率

9.30%

发文量

审稿时长

3.3 months

期刊介绍： The main focus for the IEEE Transactions on Consumer Electronics is the engineering and research aspects of the theory, design, construction, manufacture or end use of mass market electronics, systems, software and services for consumers.