Trajectory Optimization and Power Allocation for UAV Alternate Relay Communications
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摘要: 为了提高无人机中继通信系统的频谱利用率，该文提出一种交替中继方法，通过两个无人机中继交替工作，轮流将信息从源端转发到目的端。研究联合优化无人机中继的飞行轨迹和各发射端的发射功率，协调两条中继链路的相互干扰，实现端到端的吞吐量最大化。涉及的优化问题受限于无人机的高度约束、机动约束、防碰撞约束以及各发射端的平均与峰值发射功率约束，是难以求得最优解的非凸优化问题。该文提出一种基于交替最大化和连续凸优化技术的高效迭代算法求解次优解，并用计算机仿真验证了所提算法的有效性。Abstract: To improve the spectrum efficiency of the Unmanned Aerial Vehicle (UAV) relaying communication systems, a UAV alternate relay scheme is proposed, where two UAV relays alternately forward information from the source to the destination. To coordinate the interference among the two relaying data links, UAV trajectory and transmit power are investigated to maximize the end-to-end throughput of the UAV alternate relay system. The considered optimization problem is subject to the height, maneuver and collision avoidance constraints of the UAVs and the average and peak transmit power constraints of the source and UAV relays, which is non-convex and difficult to obtain the optimal solution. Nevertheless, an efficient iterative algorithm based on the alternating maximization and successive convex optimization techniques is proposed to obtain a suboptimal solution. Simulation results verify the effectiveness of the proposed algorithm.
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[1] 达新宇, 张宏伟, 胡航, 等. 认知无人机网络中次级链路吞吐量优化研究[J]. 电子与信息学报, 2020, 42(8): 1934–1941. doi: 10.11999/JEIT200056DA Xinyu, ZHANG Hongwei, HU Hang, et al. Throughput optimization of secondary link in cognitive UAV network[J]. Journal of Electronics &Information Technology, 2020, 42(8): 1934–1941. doi: 10.11999/JEIT200056 [2] 张广驰, 曾志超, 崔苗, 等. 无线供电混合多址接入网络的资源分配[J]. 电子与信息学报, 2018, 40(12): 3013–3019.ZHANG Guangchi, ZENG Zhichao, CUI Miao, et al. Resource allocation for wireless powered hybrid multiple access networks[J]. Journal of Electronics &Information Technology, 2018, 40(12): 3013–3019. [3] ZENG Yong, ZHANG Rui, and LIM T J. Wireless communications with unmanned aerial vehicles: Opportunities and challenges[J]. IEEE Communications Magazine, 2016, 54(5): 36–42. doi: 10.1109/MCOM.2016.7470933 [4] LYU Jiangbin, ZENG Yong, and ZHANG Rui. Cyclical multiple access in UAV-aided communications: A throughput-delay tradeoff[J]. IEEE Wireless Communications Letters, 2016, 5(6): 600–603. doi: 10.1109/LWC.2016.2604306 [5] LYU Jiangbin, ZENG Yong, ZHANG Rui, et al. Placement optimization of UAV-mounted mobile base stations[J]. IEEE Communications Letters, 2017, 21(3): 604–607. doi: 10.1109/LCOMM.2016.2633248 [6] ZHAN Cheng, ZENG Yong, and ZHANG Rui. Energy-efficient data collection in UAV enabled wireless sensor network[J]. IEEE Wireless Communications Letters, 2018, 7(3): 328–331. doi: 10.1109/LWC.2017.2776922 [7] ZENG Yong, XU Xiaoli, and ZHANG Rui. Trajectory design for completion time minimization in UAV-enabled multicasting[J]. IEEE Transactions on Wireless Communications, 2018, 17(4): 2233–2246. doi: 10.1109/TWC.2018.2790401 [8] LIU Tianyu, CUI Miao, ZHANG Guangchi, et al. 3D trajectory and transmit power optimization for UAV-enabled multi-link relaying systems[J]. IEEE Transactions on Green Communications and Networking, 2021, 5(1): 392–405. doi: 10.1109/TGCN.2020.3048135 [9] ZENG Yong, ZHANG Rui, and LIM T J. Throughput maximization for UAV-enabled mobile relaying systems[J]. IEEE Transactions on Communications, 2016, 64(12): 4983–4996. doi: 10.1109/TCOMM.2016.2611512 [10] ZHANG Guangchi, LI Quanzhong, ZHANG Qi, et al. Signal-to-interference-plus-noise ratio-based multi-relay beamforming for multi-user multiple-input multiple-output cognitive relay networks with interference from primary network[J]. IET Communications, 2015, 9(2): 227–238. doi: 10.1049/iet-com.2014.0494 [11] LUO Liping, ZHANG Ping, ZHANG Guangchi, et al. Outage performance for cognitive relay networks with underlay spectrum sharing[J]. IEEE Communications Letters, 2011, 15(7): 710–712. doi: 10.1109/LCOMM.2011.051011.110426 [12] CHEN Junting and GESBERT D. Optimal positioning of flying relays for wireless networks: A LOS map approach[C]. 2017 IEEE International Conference on Communications (ICC), Paris, France, 2017: 1–6. [13] CHEN Yunfei, FENG Wei, and ZHENG Gan. Optimum placement of UAV as relays[J]. IEEE Communications Letters, 2018, 22(2): 248–251. doi: 10.1109/LCOMM.2017.2776215 [14] WU Qingqing, ZENG Yong, and ZHANG Rui. Joint trajectory and communication design for multi-UAV enabled wireless networks[J]. IEEE Transactions on Wireless Communications, 2018, 17(3): 2109–2121. doi: 10.1109/TWC.2017.2789293 [15] WU Qingqing, ZENG Yong, and ZHANG Rui. Joint trajectory and communication design for UAV-enabled multiple access[C]. GLOBECOM 2017-2017 IEEE Global Communications Conference, Singapore, 2017: 1–6. [16] ZHANG Guangchi, Wu Qingqing, CUI Miao, et al. Securing UAV communications via joint trajectory and power control[J]. IEEE Transactions on Wireless Communications, 2019, 18(2): 1376–1389. doi: 10.1109/TWC.2019.2892461 [17] ZHANG Shuhang, ZHANG Hongliang, HE Qichen, et al. Joint trajectory and power optimization for UAV relay networks[J]. IEEE Communications Letters, 2018, 22(1): 161–164. doi: 10.1109/LCOMM.2017.2763135 [18] ZHANG Guangchi, YAN Haiqiang, ZENG Yong, et al. Trajectory optimization and power allocation for multi-hop UAV relaying communications[J]. IEEE Access, 2018, 6: 48566–48576. doi: 10.1109/ACCESS.2018.2868117 [19] HUANG Chuan and CUI Shuguang. On the alternative relaying Gaussian diamond channel with conferencing links[J]. IEEE Transactions on Wireless Communications, 2013, 12(2): 758–768. doi: 10.1109/TWC.2013.010413.120278 [20] BOYD S and VANDENBERGHE L. Convex Optimization[M]. Cambridge: Cambridge University Press, 2004. -
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