{"title":"Transmission design for ISAC-WPT backscatter RFID systems","authors":"Yi Wang, Junlei Zhi, Shaochuan Yang, Hui Guo","doi":"10.1049/ell2.70051","DOIUrl":null,"url":null,"abstract":"<p>In this letter, a novel integrated sensing and communication (ISAC) scenario with wireless power transfer (ISAC-WPT) is investigated. In this new setup, an access point simultaneously employs communication and sensing beams to serve a communication user, detect an RFID tag, and power an energy receiver. The objective is to design the sensing and communication beams to minimize the total transmit power while satisfying the requirements of tag detection, communication, and energy harvesting. To address the corresponding non-convex problem, the constraints are reformulated into convex second-order cone constraints, thereby obtaining the globally optimal solution. To further reduce computational complexity, zero-forcing is employed to design the beamforming vectors, followed by solving a convex optimization problem to determine the optimal power allocation between sensing and communication beams. The simulation results demonstrate the effectiveness of the proposed beamforming designs, highlighting the potential of ISAC-WPT Backscatter RFID systems.</p>","PeriodicalId":11556,"journal":{"name":"Electronics Letters","volume":null,"pages":null},"PeriodicalIF":0.7000,"publicationDate":"2024-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1049/ell2.70051","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Electronics Letters","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1049/ell2.70051","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
引用次数: 0
Abstract
In this letter, a novel integrated sensing and communication (ISAC) scenario with wireless power transfer (ISAC-WPT) is investigated. In this new setup, an access point simultaneously employs communication and sensing beams to serve a communication user, detect an RFID tag, and power an energy receiver. The objective is to design the sensing and communication beams to minimize the total transmit power while satisfying the requirements of tag detection, communication, and energy harvesting. To address the corresponding non-convex problem, the constraints are reformulated into convex second-order cone constraints, thereby obtaining the globally optimal solution. To further reduce computational complexity, zero-forcing is employed to design the beamforming vectors, followed by solving a convex optimization problem to determine the optimal power allocation between sensing and communication beams. The simulation results demonstrate the effectiveness of the proposed beamforming designs, highlighting the potential of ISAC-WPT Backscatter RFID systems.
在这封信中,我们研究了一种具有无线功率传输功能的新型集成传感和通信(ISAC)方案(ISAC-WPT)。在这种新设置中,接入点同时使用通信和传感波束为通信用户提供服务、检测 RFID 标签并为能量接收器供电。目标是设计传感和通信波束,在满足标签检测、通信和能量收集要求的同时,最大限度地降低总发射功率。为解决相应的非凸问题,将约束条件重新表述为凸二阶锥约束条件,从而获得全局最优解。为进一步降低计算复杂度,在设计波束成形矢量时采用了零强迫,然后求解凸优化问题,以确定传感波束和通信波束之间的最佳功率分配。仿真结果表明了所提波束成形设计的有效性,凸显了 ISAC-WPT 后向散射 RFID 系统的潜力。
期刊介绍:
Electronics Letters is an internationally renowned peer-reviewed rapid-communication journal that publishes short original research papers every two weeks. Its broad and interdisciplinary scope covers the latest developments in all electronic engineering related fields including communication, biomedical, optical and device technologies. Electronics Letters also provides further insight into some of the latest developments through special features and interviews.
Scope
As a journal at the forefront of its field, Electronics Letters publishes papers covering all themes of electronic and electrical engineering. The major themes of the journal are listed below.
Antennas and Propagation
Biomedical and Bioinspired Technologies, Signal Processing and Applications
Control Engineering
Electromagnetism: Theory, Materials and Devices
Electronic Circuits and Systems
Image, Video and Vision Processing and Applications
Information, Computing and Communications
Instrumentation and Measurement
Microwave Technology
Optical Communications
Photonics and Opto-Electronics
Power Electronics, Energy and Sustainability
Radar, Sonar and Navigation
Semiconductor Technology
Signal Processing
MIMO