arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1912.00752eess.SPcs.ITcs.LGmath.IT
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深度学习用于具有可见光通信的无人机的优化部署

Deep Learning for Optimal Deployment of UAVs with Visible Light Communications

Beijing University of Posts and Telecommunications(北京邮电大学);Chinese University of Hong Kong(香港中文大学);Princeton University(普林斯顿大学);Kings College London(伦敦国王学院);Virginia Tech(弗吉尼亚理工大学)

Yining Wang, Mingzhe Chen, Zhaohui Yang, Tao Luo, Walid Saad

摘要:

研究了具有可见光通信能力的无人机(UAV)的动态部署问题,以优化UAV网络的能量效率。在所研究的模型中,无人机可以同时为服务地面用户提供通信和照明。由于环境光照在降低无人机光照阈值的同时增加了VLC链路上的干扰,因此在无人机部署优化中需要考虑目标区域的光照分布。该问题被公式化为一个优化问题,该优化问题在满足用户的照明和通信需求的同时,联合优化无人机部署、用户关联和功率效率。为了解决这个问题,提出了一种将门控递归单元(GRU)的机器学习框架与卷积神经网络(CNN)相结合的算法。使用GRU和CNN,无人机可以对长期的历史光照分布进行建模,并预测未来的光照分布。给定光照分布的预测,原始的非凸优化问题可以分为两个子问题,然后使用低复杂度的迭代算法来求解。然后,该算法使无人机确定其部署和用户关联,以最小化总发射功率。使用NOAA/NCEI的地球观测组(EOG)的真实数据的仿真结果表明,所提出的方法可以实现高达68.9%的总发射功率减少相比,传统的最佳无人机部署,不考虑光照分布和用户关联。

英文摘要:

In this paper, the problem of dynamical deployment of unmanned aerial vehicles (UAVs) equipped with visible light communication (VLC) capabilities for optimizing the energy efficiency of UAV-enabled networks is studied. In the studied model, the UAVs can simultaneously provide communications and illumination to service ground users. Since ambient illumination increases the interference over VLC links while reducing the illumination threshold of the UAVs, it is necessary to consider the illumination distribution of the target area for UAV deployment optimization. This problem is formulated as an optimization problem which jointly optimizes UAV deployment, user association, and power efficiency while meeting the illumination and communication requirements of users. To solve this problem, an algorithm that combines the machine learning framework of gated recurrent units (GRUs) with convolutional neural networks (CNNs) is proposed. Using GRUs and CNNs, the UAVs can model the long-term historical illumination distribution and predict the future illumination distribution. Given the prediction of illumination distribution, the original nonconvex optimization problem can be divided into two sub-problems and is then solved using a low-complexity, iterative algorithm. Then, the proposed algorithm enables UAVs to determine the their deployment and user association to minimize the total transmit power. Simulation results using real data from the Earth observations group (EOG) at NOAA/NCEI show that the proposed approach can achieve up to 68.9% reduction in total transmit power compared to a conventional optimal UAV deployment that does not consider the illumination distribution and user association.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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