In this paper, we study the performance of multiple reconfigurable intelligent surfaces (RISs)-aided unmanned aerial vehicle (UAV) communication networks over Nakagami-$m$ fading channels. For that purpose, we used accurate closed-form approximations for the channel distributions to derive closed-form approximations for the outage probability (OP), average symbol error probability (ASEP), and the average channel capacity assuming independent non-identically distributed (i.ni.d.) channels. Furthermore, we derive the asymptotic OP at the high signal-to-noise ratio (SNR) regime to get more insights into the system performance. We also study some practical scenarios related to RISs, UAV, and destination locations and illustrate their impact on the system performance through simulations. Finally, we provide an optimization problem on the transmit power of each channel.

翻译：本文研究了在Nakagami-$m$衰落信道下，多个可重构智能表面（RIS）辅助的无人机（UAV）通信网络的性能。为此，我们利用信道分布的精确闭式近似，推导了在独立非同分布（i.ni.d.）信道条件下，中断概率（OP）、平均符号错误概率（ASEP）以及平均信道容量的闭式近似表达式。此外，我们还推导了高信噪比（SNR）区域下的渐近中断概率，以更深入地理解系统性能。同时，我们考察了与RIS、UAV和目的节点位置相关的若干实际场景，并通过仿真分析了它们对系统性能的影响。最后，我们提出了针对各信道发射功率的优化问题。