| 引用本文： |
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王正强,任昕志,万晓榆,等.IRS辅助无人机隐蔽通信系统平均速率最大化算法[J].电讯技术，2025，（12）：2132 - 2140. [点击复制]
- WANG Zhengqiang,REN Xinzhi,WAN Xiaoyu,et al.Average Rate Maximization Algorithm for IRS-assisted UAV Covert Communication Systems[J].，2025，（12）：2132 - 2140. [点击复制]
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| 摘要: |
| 提出了智能反射面(Intelligent Reflecting Surface，IRS)辅助的无人机隐蔽通信系统资源管理与轨迹优化算法。首先推导出监察者的最优检测阈值和能够实现隐蔽传输阈值的解析表达式，然后在满足隐蔽约束的前提下对无人机飞行轨迹、发射功率和IRS相移进行联合优化最大化平均隐蔽传输速率。利用块坐标下降算法将优化问题分解成3个子问题交替优化变量。仿真结果表明，所提算法优化的轨迹方案与初始直线轨迹方案相比平均速率提升了约93%。 |
| 关键词: 隐蔽通信 无人机通信 智能反射面 资源分配 轨迹优化 |
| DOI：10.20079/j.issn.1001-893x.240517003 |
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| 基金项目:四川省区域创新合作项目（2022YFQ0017） |
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| Average Rate Maximization Algorithm for IRS-assisted UAV Covert Communication Systems |
| WANG Zhengqiang,REN Xinzhi,WAN Xiaoyu,FAN Zifu |
| (School of Communications and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China) |
| Abstract: |
| An intellighrt reflecting sarface(IRS)-assisted resource management and trajectory optimization algorithm for unmanned aerial vehicle(UAV) covert communication system is proposed.First,the optimal detection threshold of the monitor and the analytical expression that can achieve the covert transmission threshold are derived.Then the UAV flight trajectory,the transmit power and the IRS phase shift are jointly optimized to maximize the average covert transmission rate under the premise of satisfying the covert constraints.The block coordinate descent algorithm is used to decompose the optimization problem into three subproblems to optimize the variables alternately.Simulation results show that the optimized trajectory scheme proposed by the algorithm improves the average rate by approximately 93% compared with the initial straight-line trajectory scheme. |
| Key words: covert communication UAV communication intelligent reflecting surface resource allocation trajectory optimization |
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