信息与控制2023，Vol.52Issue(6)：701-710,10.DOI:10.13976/j.cnki.xk.2023.2476
基于非正交多址接入的无人机通感一体化系统
UAV Integrated Sensing and Communication System Based on Non-orthogonal Multiple Access
张睿智 1厉俊 1沈晓峰1
作者信息
- 1. 电子科技大学信息与通信工程学院,四川成都 611731
- 折叠
摘要
Abstract
To cope with spectrum resource shortage and channel link interference in integrated sensing and communication(ISAC)systems,we investigate unmanned aerial vehicle(UAV)-integrated sensing and communication based on non-orthogonal multiple access(NOMA).A dual-function UAV sends superimposed signals to multiple communication users according to the downlink non-orthogonal mul-tiple access,and the superimposed signals can also be used for target perception simultaneously.To balance the performance of communication and perception,we propose a beamforming design based on a successive convex approximation that aims to maximize the weighted sum of effective sensing power and total bit rate under the constraint of minimum bit rate requirements.To deal with the fact that the optimal solution obtained using the semi-definite relaxation algorithm does not strictly satisfy the rank-one constraint,we further propose a reconstruction method based on an improved semi-defi-nite relaxation algorithm that can reconstruct the beamforming design results to satisfy the maximum transmit power and the minimum communication rate while maintaining system performance.Simulation results show that the performance of the proposed ISAC is improved by 7.37％compared with the ISAC system of ground base stations based on orthogonal multiple access,and that of the proposed beamform-ing design is increased by 10.31％based on the conventional semi-definite relaxation algorithm.关键词
通感一体化/非正交多址接入/无人机/波束成形设计/凸优化Key words
integrated sensing and communication(ISAC)/non-orthogonal multiple access(NOMA)/unmanned aerial vehicle(UAV)/beamforming design/convex optimization分类
信息技术与安全科学引用本文复制引用
张睿智,厉俊,沈晓峰..基于非正交多址接入的无人机通感一体化系统[J].信息与控制,2023,52(6):701-710,10.
