论文标题
启用URLLC无人机继电器系统的联合传输功率和放置优化
Joint Transmit Power and Placement Optimization for URLLC-enabled UAV Relay Systems
论文作者
论文摘要
这封信考虑了一个无人驾驶飞机（UAV）支持的继电器通信系统，用于传递具有超高可靠性的延迟关键消息，而继电器在放大器和前向（AF）模式下运行。我们的目标是共同优化无人机位置和功率，以最大程度地减少解码误差概率，同时保证延迟约束。都考虑了自由空间通道模型和三维（3-D）通道模型。对于第一个模型，我们提出了一种低复杂性迭代算法来解决该问题，而对于信噪比（SNR）非常高的情况下，全球最佳解决方案是获得了全球最佳解决方案。对于第二个模型，我们还提出了一种低复杂性迭代算法来解决该问题。仿真结果证实了我们提出的算法的性能优势。
This letter considers an unmanned aerial vehicle (UAV)-enabled relay communication system for delivering latency-critical messages with ultra-high reliability, where the relay is operating under amplifier-and-forward (AF) mode. We aim to jointly optimize the UAV location and power to minimize decoding error probability while guaranteeing the latency constraints. Both the free-space channel model and three-dimensional (3-D) channel model are considered. For the first model, we propose a low-complexity iterative algorithm to solve the problem, while globally optimal solution is derived for the case when the signal-to-noise ratio (SNR) is extremely high. For the second model, we also propose a low-complexity iterative algorithm to solve the problem. Simulation results confirm the performance advantages of our proposed algorithms.
