RIS-SWIPT for Batteryless Users in Disaster Areas

Hanyun Zhang;Wenchi Cheng
{"title":"RIS-SWIPT for Batteryless Users in Disaster Areas","authors":"Hanyun Zhang;Wenchi Cheng","doi":"10.23919/JCIN.2022.10005220","DOIUrl":null,"url":null,"abstract":"For trapped users in disaster areas, the available energy of affected user equipment (UE) is limited due to the breakdown of the ground power system. When complex geographical condition prevents ground emergency vehicles from reaching disaster-stricken areas, unmanned aerial vehicle (UAV) can effectively work as a temporary aerial base station for serving terrestrial trapped users. Simultaneous wireless information and power transfer (SWIPT) system is intriguing for distributed batteryless users (BUs) by transferring data and energy simultaneously. However, how to achieve the maximum energy efficiency (EE) and energy transfer efficiency (ETE) for distributed BUs in UAV-enabled SWIPT systems is not very clear. In this paper, we develop three novel reconfigurable intelligent surface (RIS)-based SWIPT algorithms to solve this nonconvex joint optimization problem using deep reinforcement learning (RL) algorithms. Through the deployment of RIS-assisted UAVs, we aim to maximize the EE along with the ETE via jointly designing the UAV trajectory, the phase matrix, and the power splitting ratio within strict time and energy constraints. The obtained numerical results show that our developed RL-based algorithms can effectively improve the cost time, the average charging rate, data rate, and the EE/ETE performance of the RIS-assisted SWIPT systems as compared with benchmark solutions.","PeriodicalId":100766,"journal":{"name":"Journal of Communications and Information Networks","volume":"7 4","pages":"433-446"},"PeriodicalIF":0.0000,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Communications and Information Networks","FirstCategoryId":"1085","ListUrlMain":"https://ieeexplore.ieee.org/document/10005220/","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

For trapped users in disaster areas, the available energy of affected user equipment (UE) is limited due to the breakdown of the ground power system. When complex geographical condition prevents ground emergency vehicles from reaching disaster-stricken areas, unmanned aerial vehicle (UAV) can effectively work as a temporary aerial base station for serving terrestrial trapped users. Simultaneous wireless information and power transfer (SWIPT) system is intriguing for distributed batteryless users (BUs) by transferring data and energy simultaneously. However, how to achieve the maximum energy efficiency (EE) and energy transfer efficiency (ETE) for distributed BUs in UAV-enabled SWIPT systems is not very clear. In this paper, we develop three novel reconfigurable intelligent surface (RIS)-based SWIPT algorithms to solve this nonconvex joint optimization problem using deep reinforcement learning (RL) algorithms. Through the deployment of RIS-assisted UAVs, we aim to maximize the EE along with the ETE via jointly designing the UAV trajectory, the phase matrix, and the power splitting ratio within strict time and energy constraints. The obtained numerical results show that our developed RL-based algorithms can effectively improve the cost time, the average charging rate, data rate, and the EE/ETE performance of the RIS-assisted SWIPT systems as compared with benchmark solutions.
RIS-SWIPT灾区无电池用户
对于灾区受困用户,由于地面电力系统的故障,受影响用户设备的可用能量有限。当复杂的地理条件导致地面应急车辆无法到达灾区时,无人机可以有效地作为临时空中基站,为地面受困用户提供服务。同时无线信息与电力传输系统(SWIPT)是分布式无电池用户(BUs)的一种有趣的系统,它可以同时传输数据和能量。然而,如何在无人机支持的SWIPT系统中实现分布式总线的最大能效(EE)和能量传输效率(ETE)还不是很清楚。在本文中,我们开发了三种新的基于可重构智能表面(RIS)的SWIPT算法,利用深度强化学习(RL)算法来解决这种非凸关节优化问题。通过ris辅助无人机的部署,在严格的时间和能量约束下,通过联合设计无人机的轨迹、相位矩阵和功率分割比,实现EE和ETE的最大化。数值结果表明,与基准解决方案相比,我们开发的基于rl的算法可以有效地提高ris辅助SWIPT系统的成本时间、平均充电速率、数据速率和EE/ETE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。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信