无线电工程2025，Vol.55Issue(10)：1996-2005,10.DOI:10.3969/j.issn.1003-3106.2025.10.006
面向室内可见光通信的液晶RIS辅助的角度分集发射机
Liquid Crystal RIS-assisted Angular Diversity Transmitter for Indoor Visible Light Communication
摘要
Abstract
Most current research on Reconfigurable Intelligent Surfaces(RIS)-assisted Visible Light Communication(VLC)systems primarily focuses on integrating RIS into the channel to address Line of Sight(LOS)blockage issues and enhance data rates.In recent years,some studies have begun to explore the combination of Liquid Crystal RIS(LC-RIS)with traditional VLC transmitters to further increase data rates.To expand the application of LC-RIS in VLC systems,a model of Angle Diversity Transmitter(ADT)assisted by LC-RIS is designed and used to assist indoor VLC system communication.Multiple sets of comparative experiments are set up to highlight the superior performance of the proposed model.This research not only improves communication efficiency but also effectively mitigates interference among multiple Light Emitting Diodes(LEDs)by utilizing the electrically controlled refractive index characteristics of transmissive RIS and the angular diversity of spatial optical signals.Simulation results show that the proposed transmitter model outperforms traditional VLC transmitter models in terms of illuminance and uniformity,achieving an improvement of approximately 130%in illuminance compared to traditional transmitter models.Furthermore,it still outperforms traditional transmitter models in terms of maximum achievable rate and worst-case achievable rate,with respective improvements of approximately 105%.This successfully verifies that the ADT assisted by LC-RIS has superior performance compared to previous transmitter models.关键词
可见光通信/智能超表面/角度分集发射机/液晶/电控调节Key words
VLC/RIS/ADT/LC/electrically controlled adjustment分类
信息技术与安全科学引用本文复制引用
余礼苏,张洛瑄,吕欣欣,王正海,夏勇,王玉皞..面向室内可见光通信的液晶RIS辅助的角度分集发射机[J].无线电工程,2025,55(10):1996-2005,10.基金项目
国家自然科学基金地区项目(62161024) （62161024）
江西省主要学科学术和技术带头人省级人才项目(20232BCJ23085) （20232BCJ23085）
江西省自然科学基金(20224BAB212002) （20224BAB212002）
江西省科技研发计划(20242BCC32016)National Natural Science Foundation of China(62161024) （20242BCC32016）
Jiangxi Provincial Talent Project for Academic and Technical Leaders of Ma-jor Disciplines(20232BCJ23085) （20232BCJ23085）
Jiangxi Provincial Natural Science Foundation of China(20224BAB212002) （20224BAB212002）
Jiangxi Province Science and Technolo-gy Development Programme(20242BCC32016) （20242BCC32016）
