Coordinated Beamforming for RIS-Empowered ISAC Systems over Secure Low-Altitude Networks
Emerging as a cornerstone for next-generation wireless networks, integrated sensing and communication (ISAC) systems demand innovative solutions to balance spectral efficiency and sensing accuracy. In this paper, we propose a coordinated beamforming framework for a reconfigurable intelligent surface (RIS)-empowered ISAC system, where the active precoding at the dual-functional base station (DFBS) and the passive beamforming at the RIS are jointly optimized to provide communication services for legitimate unmanned aerial vehicles (UAVs) while sensing the unauthorized UAVs. The sum-rate of all legitimate UAVs are maximized, while satisfying the radar sensing signal-to-noise ratio requirements, the transmit power constraints, and the reflection coefficients of the RIS. To address the inherent non-convexity from coupled variables, we propose a low-complexity algorithm integrating fractional programming with alternating optimization, featuring convergence guarantees. Numerical results demonstrate that the proposed algorithm achieves higher data rate compared to disjoint optimization benchmarks. This underscores RIS's pivotal role in harmonizing communication and target sensing functionalities for low-altitude networks.
Code (0)
등록된 구현이 없습니다.
Tasks
Integrated sensing and communicationISACMethods 이 논문이 사용한 방법론
Similar Papers 제목 키워드 기반
Movable-Antenna Array Empowered ISAC Systems for Low-Altitude Economy
This paper investigates a movable-antenna (MA) array empowered integrated sensing and communications (ISAC) over low-altitude platform (LAP) system to support low-altitude economy (LAE) applications. In the considered sy…
ISACMultipath Exploitation for Fluctuating Target Detection in RIS-Assisted ISAC Systems
Integrated sensing and communication (ISAC) systems are typically deployed in multipath environments, which is usually deemed as a challenging issue for wireless communications. However, the multipath propagation can als…
DiversityIntegrated sensing and communicationISACCramer-Rao Bound Optimization for Active RIS-Empowered ISAC Systems
Integrated sensing and communication (ISAC), which simultaneously performs sensing and communication functions within a shared frequency band and hardware platform, has emerged as a promising technology for future wirele…
Integrated sensing and communicationISACparameter estimationTerahertz Integrated Sensing and Communication-Empowered UAVs in 6G: A Transceiver Design Perspective
Due to their high maneuverability, flexible deployment, and low cost, unmanned aerial vehicles (UAVs) are expected to play a pivotal role in not only communication, but also sensing. Especially by exploiting the ultra-wi…
Integrated sensing and communicationISACSignaling Design for Noncoherent Distributed Integrated Sensing and Communication Systems
The ultimate goal of enabling sensing through the cellular network is to obtain coordinated sensing of an unprecedented scale, through distributed integrated sensing and communication (D-ISAC). This, however, introduces …
Integrated sensing and communicationISAC