发表机构
Phenikaa University; University of Technology Sydney; Van Lang University; Ho Chi Minh City University of Technology and Engineering; Henan Polytechnic University（phenikaa大学; 悉尼科技大学; van lang大学; 胡志明市工程技术大学; 河南理工大学）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
针对高机动无人机OTFS通信，提出基于延迟SINR反馈的功率控制框架，兼顾可靠性与公平性，仿真显示较OFDM和等功率分配显著提升性能。
AI 中文摘要
本文针对高机动性下运行的正交时频空间（OTFS）无人机（UAV）通信，开发了一种由延迟信号与干扰加噪声比（SINR）反馈驱动的功率控制框架，以可靠性和公平性作为主要设计目标。一个配备均匀线性阵列的基站在一个共同的OTFS帧上服务多架无人机，而路径延迟、多普勒频移和无人机间干扰由三维传播几何和基站阵列响应决定，而非由假定的耦合模型决定。所提出的控制器不依赖瞬时信道状态信息，仅根据延迟的SINR测量值刷新发射功率向量，这符合快速衰落空中链路的实际限制。一种预测-平滑-投影规则混合了可靠性份额、公平性份额和频谱效率份额，每个份额分别归一化，使得效用权重直接控制闭环。仿真表明，在相同参数配置下，速度为70 m/s时，OTFS的有效SINR每帧变化比正交频分复用（OFDM）少37.8%，并且所得到的控制器在40 m/s时将平均最小SINR比等功率分配提高1.21 dB，同时将Jain公平指数从0.833提升至0.970，而总速率代价为24.6%，该代价由效用权重保持在设计者的控制之下。在同一控制器内，OTFS相对于OFDM的优势从10 m/s时的0.18 dB扩大到90 m/s时的0.81 dB，表明波形对陈旧SINR反馈有用性的贡献随移动性增加而增大。
英文摘要
This paper develops a power control framework driven by delayed signal-to-interference-plus-noise ratio (SINR) feedback for orthogonal time frequency space (OTFS) unmanned aerial vehicle (UAV) communications operating under high mobility, with reliability and fairness as the primary design targets.A base station with a uniform linear array serves several UAVs on a common OTFS frame, while the path delays, Doppler shifts, and inter-UAV interference are determined by the three-dimensional propagation geometry and the base-station array response rather than by a postulated coupling model. In place of instantaneous channel state information, the proposed controller refreshes the transmit-power vector from delayed SINR measurements alone, which matches the practical limitations of fast-fading aerial links. A prediction-smoothing-projection rule mixes a reliability share, a fairness share and a spectral-efficiency share, each normalized separately, so that the utility weights control the closed loop directly. Simulations show that the effective SINR of OTFS changes 37.8% less per frame than that of orthogonal frequency division multiplexing (OFDM) at 70 m/s under the same numerology, and that the resulting controller raises the average minimum SINR by 1.21 dB over equal power allocation at 40 m/s while lifting Jain's fairness index from 0.833 to 0.970, at a sum-rate cost of 24.6% that the utility weights keep under the designer's control. The margin of OTFS over OFDM within the same controller widens from 0.18 dB at 10 m/s to 0.81 dB at 90 m/s, showing that the waveform contribution to the usefulness of stale SINR feedback increases with mobility.
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