{"title":"A multi-antenna multi-tag monostatic backscatter system","authors":"AbbasAli Atarodi Kozehkonan, Masoumeh Azghani","doi":"10.1007/s12243-025-01121-0","DOIUrl":null,"url":null,"abstract":"<div><p>This work presents a novel iterative optimization approach for multi-antenna multi-tag monostatic backscatter systems (MBS). The proposed method maximizes the collective communication rate (sum-rate) of multiple tags while incorporating constraints on transmission power, combiner design, and tag limitations. A closed-form solution is derived for the combiners, while beamforming vectors and backscattering coefficients are optimized through a two-step iterative algorithm. The block coordinate descent technique is employed to solve the optimization problem, where variables are updated sequentially while others are held constant. Furthermore, the model is simplified for low-SNR regimes, providing tractable benchmarks for performance evaluation. Extensive simulations demonstrate that the proposed iterative approach achieves superior performance compared with existing methods, resulting in a significant improvement in the communication rate within the MBS system.</p></div>","PeriodicalId":50761,"journal":{"name":"Annals of Telecommunications","volume":"81 5-6","pages":"331 - 343"},"PeriodicalIF":2.2000,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Annals of Telecommunications","FirstCategoryId":"94","ListUrlMain":"https://link.springer.com/article/10.1007/s12243-025-01121-0","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
This work presents a novel iterative optimization approach for multi-antenna multi-tag monostatic backscatter systems (MBS). The proposed method maximizes the collective communication rate (sum-rate) of multiple tags while incorporating constraints on transmission power, combiner design, and tag limitations. A closed-form solution is derived for the combiners, while beamforming vectors and backscattering coefficients are optimized through a two-step iterative algorithm. The block coordinate descent technique is employed to solve the optimization problem, where variables are updated sequentially while others are held constant. Furthermore, the model is simplified for low-SNR regimes, providing tractable benchmarks for performance evaluation. Extensive simulations demonstrate that the proposed iterative approach achieves superior performance compared with existing methods, resulting in a significant improvement in the communication rate within the MBS system.
期刊介绍：
Annals of Telecommunications is an international journal publishing original peer-reviewed papers in the field of telecommunications. It covers all the essential branches of modern telecommunications, ranging from digital communications to communication networks and the internet, to software, protocols and services, uses and economics. This large spectrum of topics accounts for the rapid convergence through telecommunications of the underlying technologies in computers, communications, content management towards the emergence of the information and knowledge society. As a consequence, the Journal provides a medium for exchanging research results and technological achievements accomplished by the European and international scientific community from academia and industry.
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