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Resource and trajectory optimization in UAV-powered wireless communication system

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Abstract

The unmanned aerial vehicle (UAV) is a promising enabler of Internet of Things (IoT) owing to its highly flexible features. Combined with wireless power transfer (WPT) techniques, a UAV can provide energy for IoT nodes, which can extend the lifetime of energy constrained communication systems. This paper studies resource and trajectory optimization in UAV-powered wireless communication systems, which consists of two UAVs and two ground nodes (GNs). The system works in a way that the two UAVs alternately charge the two GNs through wireless power transfer and two GNs also alternately send their information to the corresponding UAV with the harvested energy, which can effectively reduce the interference while receiving the information of GNs. Aiming to maximize the minimum throughput of two GNs, wireless resource and UAVs’ trajectories are jointly optimized with the constraints of UAV collision avoidance, flying speed, and transmit power. Successive convex programming (SCP) and block coordinate descent (BCD) are utilized to solve the optimization problem. Simulation results show that the proposed scheme achieves larger minimum throughput than the benchmark scheme.

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Acknowledgements

This work was supported in part by National Natural Science Foundation of China (Grant No. 61871348), Project Founded by China Postdoctoral Science Foundation (Grant No. 2019T120531), and Fundamental Research Funds for the Provincial Universities of Zhejiang (Grant No. RFA2019001).

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Authors and Affiliations

  1. College of Information Engineering, Zhejiang University of Technology, Hangzhou, 310023, China

    Weidang Lu & Peiyuan Si

  2. School of Information Science and Engineering, Harbin Institute of Technology, Weihai, 264209, China

    Fangwei Lu & Bo Li

  3. School of Computer Science and Electronics Engineering, University of Essex, Colchester, CO4 3SQ, UK

    Zilong Liu

  4. National Key Laboratory on Communications, University of Electronic Science and Technology of China, Chengdu, 611731, China

    Su Hu

  5. University Key Laboratory of Advanced Wireless Communications of Guangdong Province, Southern University of Science and Technology, Shenzen, 518055, China

    Yi Gong

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  1. Weidang Lu
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  2. Peiyuan Si
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  3. Fangwei Lu
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  4. Bo Li
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  5. Zilong Liu
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  6. Su Hu
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  7. Yi Gong
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Correspondence to Bo Li.

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Lu, W., Si, P., Lu, F. et al. Resource and trajectory optimization in UAV-powered wireless communication system. Sci. China Inf. Sci. 64, 140304 (2021). https://doi.org/10.1007/s11432-020-3060-4

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  • DOI: https://doi.org/10.1007/s11432-020-3060-4

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