Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming
This paper investigates secrecy solutions for integrated sensing and communication (ISAC) systems, leveraging the combination of a reflecting intelligent surface (RIS) and an unmanned aerial vehicle (UAV) to introduce new degrees of freedom for enhanced system performance. Specifically, we propose a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2025-01-01
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| Series: | Drones |
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| Online Access: | https://www.mdpi.com/2504-446X/9/1/51 |
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| author | Weichao Yang Yajing Wang Dawei Wang Yixin He Li Li |
| author_facet | Weichao Yang Yajing Wang Dawei Wang Yixin He Li Li |
| author_sort | Weichao Yang |
| collection | DOAJ |
| description | This paper investigates secrecy solutions for integrated sensing and communication (ISAC) systems, leveraging the combination of a reflecting intelligent surface (RIS) and an unmanned aerial vehicle (UAV) to introduce new degrees of freedom for enhanced system performance. Specifically, we propose a secure ISAC system supported by a UAV-mounted RIS, where an ISAC base station (BS) facilitates secure multi-user communication while simultaneously detecting potentially malicious radar targets. Our goal is to improve parameter estimation performance, measured by the Cramér–Rao bound (CRB), by jointly optimizing the UAV position, transmit beamforming, and RIS beamforming, subject to constraints including the UAV flight area, communication users’ quality of service (QoS) requirements, secure transmission demands, power budget, and RIS reflecting coefficient limits. To address this non-convex, multivariate, and coupled problem, we decompose it into three subproblems, which are solved iteratively using particle swarm optimization (PSO), semi-definite relaxation (SDR), majorization–minimization (MM), and alternating direction method of multipliers (ADMM) algorithms. Our numerical results validate the effectiveness of the proposed scheme and demonstrate the potential of employing UAV-mounted RIS in ISAC systems to enhance radar sensing capabilities. |
| format | Article |
| id | doaj-art-f0d084e9c95b4e99b119cf49177d9867 |
| institution | Kabale University |
| issn | 2504-446X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Drones |
| spelling | doaj-art-f0d084e9c95b4e99b119cf49177d98672025-01-24T13:29:47ZengMDPI AGDrones2504-446X2025-01-01915110.3390/drones9010051Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power BeamformingWeichao Yang0Yajing Wang1Dawei Wang2Yixin He3Li Li4School of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaCollege of Information Science and Engineering, Jiaxing University, Jiaxing 314001, ChinaSchool of Electronics and Information, Northwestern Polytechnical University, Xi’an 710072, ChinaThis paper investigates secrecy solutions for integrated sensing and communication (ISAC) systems, leveraging the combination of a reflecting intelligent surface (RIS) and an unmanned aerial vehicle (UAV) to introduce new degrees of freedom for enhanced system performance. Specifically, we propose a secure ISAC system supported by a UAV-mounted RIS, where an ISAC base station (BS) facilitates secure multi-user communication while simultaneously detecting potentially malicious radar targets. Our goal is to improve parameter estimation performance, measured by the Cramér–Rao bound (CRB), by jointly optimizing the UAV position, transmit beamforming, and RIS beamforming, subject to constraints including the UAV flight area, communication users’ quality of service (QoS) requirements, secure transmission demands, power budget, and RIS reflecting coefficient limits. To address this non-convex, multivariate, and coupled problem, we decompose it into three subproblems, which are solved iteratively using particle swarm optimization (PSO), semi-definite relaxation (SDR), majorization–minimization (MM), and alternating direction method of multipliers (ADMM) algorithms. Our numerical results validate the effectiveness of the proposed scheme and demonstrate the potential of employing UAV-mounted RIS in ISAC systems to enhance radar sensing capabilities.https://www.mdpi.com/2504-446X/9/1/51integrated sensing and communication (ISAC)physical layer securityreconfigurable intelligent surface (RIS)Cramér–Rao bound (CRB) |
| spellingShingle | Weichao Yang Yajing Wang Dawei Wang Yixin He Li Li Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming Drones integrated sensing and communication (ISAC) physical layer security reconfigurable intelligent surface (RIS) Cramér–Rao bound (CRB) |
| title | Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming |
| title_full | Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming |
| title_fullStr | Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming |
| title_full_unstemmed | Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming |
| title_short | Secrecy-Constrained UAV-Mounted RIS-Assisted ISAC Networks: Position Optimization and Power Beamforming |
| title_sort | secrecy constrained uav mounted ris assisted isac networks position optimization and power beamforming |
| topic | integrated sensing and communication (ISAC) physical layer security reconfigurable intelligent surface (RIS) Cramér–Rao bound (CRB) |
| url | https://www.mdpi.com/2504-446X/9/1/51 |
| work_keys_str_mv | AT weichaoyang secrecyconstraineduavmountedrisassistedisacnetworkspositionoptimizationandpowerbeamforming AT yajingwang secrecyconstraineduavmountedrisassistedisacnetworkspositionoptimizationandpowerbeamforming AT daweiwang secrecyconstraineduavmountedrisassistedisacnetworkspositionoptimizationandpowerbeamforming AT yixinhe secrecyconstraineduavmountedrisassistedisacnetworkspositionoptimizationandpowerbeamforming AT lili secrecyconstraineduavmountedrisassistedisacnetworkspositionoptimizationandpowerbeamforming |