{"title":"具有RFID后向散射体的noma支持ISAC系统的优化资源分配","authors":"Rojith K;Raviteja Allu;Keshav Singh;Chih-Peng Li;Sudip Biswas","doi":"10.1109/LWC.2025.3559494","DOIUrl":null,"url":null,"abstract":"This letter investigates a non-orthogonal multiple access (NOMA)-enabled multi-user transmission system in a backscatter communication environment with integrated sensing and communication (ISAC). In this configuration, a base station (BS) simultaneously serves multiple users through a communication beam while utilizing a sensing beam to detect the presence of an radio frequency identification (RFID) tag. A joint beamforming design problem is formulated to maximize the sum-rate for the users while considering the constraints for successive interference cancellation (SIC) and the minimum quality of service (QoS) for all the communication users and the detection of the tag. Lagrangian dual transformation is used to address the non-convex nature of the objective function. Due to the coupling of variables, an alternating optimization (AO) based algorithm is proposed with guaranteed convergence. Through numerical simulations, we validate the efficacy of our proposed algorithm. Furthermore, we assess the impact of several key parameters on system performance, including the number of transmitting antennas at the BS, the available transmit power at the BS, the minimum QoS for the communication users, and the number of communication users.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"14 7","pages":"1934-1938"},"PeriodicalIF":5.5000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Optimized Resource Allocation in NOMA-Enabled ISAC Systems With RFID Backscatterers\",\"authors\":\"Rojith K;Raviteja Allu;Keshav Singh;Chih-Peng Li;Sudip Biswas\",\"doi\":\"10.1109/LWC.2025.3559494\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This letter investigates a non-orthogonal multiple access (NOMA)-enabled multi-user transmission system in a backscatter communication environment with integrated sensing and communication (ISAC). In this configuration, a base station (BS) simultaneously serves multiple users through a communication beam while utilizing a sensing beam to detect the presence of an radio frequency identification (RFID) tag. A joint beamforming design problem is formulated to maximize the sum-rate for the users while considering the constraints for successive interference cancellation (SIC) and the minimum quality of service (QoS) for all the communication users and the detection of the tag. Lagrangian dual transformation is used to address the non-convex nature of the objective function. Due to the coupling of variables, an alternating optimization (AO) based algorithm is proposed with guaranteed convergence. Through numerical simulations, we validate the efficacy of our proposed algorithm. Furthermore, we assess the impact of several key parameters on system performance, including the number of transmitting antennas at the BS, the available transmit power at the BS, the minimum QoS for the communication users, and the number of communication users.\",\"PeriodicalId\":13343,\"journal\":{\"name\":\"IEEE Wireless Communications Letters\",\"volume\":\"14 7\",\"pages\":\"1934-1938\"},\"PeriodicalIF\":5.5000,\"publicationDate\":\"2025-04-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Wireless Communications Letters\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10960385/\",\"RegionNum\":3,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"COMPUTER SCIENCE, INFORMATION SYSTEMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10960385/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}
Optimized Resource Allocation in NOMA-Enabled ISAC Systems With RFID Backscatterers
This letter investigates a non-orthogonal multiple access (NOMA)-enabled multi-user transmission system in a backscatter communication environment with integrated sensing and communication (ISAC). In this configuration, a base station (BS) simultaneously serves multiple users through a communication beam while utilizing a sensing beam to detect the presence of an radio frequency identification (RFID) tag. A joint beamforming design problem is formulated to maximize the sum-rate for the users while considering the constraints for successive interference cancellation (SIC) and the minimum quality of service (QoS) for all the communication users and the detection of the tag. Lagrangian dual transformation is used to address the non-convex nature of the objective function. Due to the coupling of variables, an alternating optimization (AO) based algorithm is proposed with guaranteed convergence. Through numerical simulations, we validate the efficacy of our proposed algorithm. Furthermore, we assess the impact of several key parameters on system performance, including the number of transmitting antennas at the BS, the available transmit power at the BS, the minimum QoS for the communication users, and the number of communication users.
期刊介绍:
IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. 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 wireless communication systems.