{"title":"Joint Beamforming and Resource Allocation Design for STAR-RIS Aided RSMA-BiBC System","authors":"Chenyan Xiao;Fei Du;Dacai Wei;Xiaoqing Wang;Xiongwen Zhao","doi":"10.1109/LCOMM.2024.3520125","DOIUrl":null,"url":null,"abstract":"A novel framework of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided rate-splitting multiple access (RSMA)-enabled bistatic backscatter communication (BiBC) is proposed in this letter, considering double reflections and transmissions at STAR-RIS. An optimization problem is formulated to maximize the sum rate at the reader by the joint design of beamforming at the STAR-RIS and power allocation at the tag, guaranteeing the targeted rate requirement and energy harvesting constraint of each tag. To solve the coupling non-convex problem, an alternating optimization (AO) algorithm based on the successive convex approximation (SCA) and sequential rank-one constraint relaxation (SROCR) is presented. Simulation results reveal that the proposed framework provides ~61 % and ~40 % gains in system sum rate over benchmarks and achieves better trade-off between harvested energy and data rate.","PeriodicalId":13197,"journal":{"name":"IEEE Communications Letters","volume":"29 2","pages":"378-382"},"PeriodicalIF":3.7000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10807234/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"TELECOMMUNICATIONS","Score":null,"Total":0}
引用次数: 0
Abstract
A novel framework of simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-aided rate-splitting multiple access (RSMA)-enabled bistatic backscatter communication (BiBC) is proposed in this letter, considering double reflections and transmissions at STAR-RIS. An optimization problem is formulated to maximize the sum rate at the reader by the joint design of beamforming at the STAR-RIS and power allocation at the tag, guaranteeing the targeted rate requirement and energy harvesting constraint of each tag. To solve the coupling non-convex problem, an alternating optimization (AO) algorithm based on the successive convex approximation (SCA) and sequential rank-one constraint relaxation (SROCR) is presented. Simulation results reveal that the proposed framework provides ~61 % and ~40 % gains in system sum rate over benchmarks and achieves better trade-off between harvested energy and data rate.
期刊介绍：
The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
