基于物理层网络编码的无人机中继网络资源优化

doi:10.11959/j.issn.1000-436x.2021172

Abstract

Abstract:

To solve the problem of low resource utilization of the traditional two-way communication network with unmanned aerial vehicle (UAV) as relays, a resource optimization algorithm based on physical-layer network coding was proposed.Considering the transmission power constraints of the UAV relay communication network, the maximum speed constraints of the UAV and the synchronization requirements of the physical-layer network coding, a resource allocation model for joint optimization of transmission power and UAV trajectory design was formulated to minimize the system outage probability.By decoupling the original non-convex problem into two sub-problems, an iterative algorithm was proposed to realize the joint implementation of optimal trajectory design and optimal system power distribution based on the Karush-Kuhn-Tucker (KKT) conditions, Lagrangian duality method and subgradient method.Simulation results show that the proposed algorithm can significantly improve the system performance and reduce the possibility of communication interruption.

Key words: UAV relay communication, physical-layer network coding, outage probability, power allocation, trajectory optimization

CLC Number:

TN929.5

Junyi YANG, Bo LI, Qinyu ZHANG. Resource optimization for UAV relay networks based on physical-layer network coding[J]. Journal on Communications, 2021, 42(9): 12-20.

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References 18

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P_max/dBm	UAV位置/m	UAV功率/dBm	S ₁/S ₂功率/dBm
20	207.11	17.47	13.45
23	211.16	20.30	16.64
26	207.44	23.46	19.46
29	216.93	26.02	22.94
32	248.11	27.47	27.10

Resource optimization for UAV relay networks based on physical-layer network coding

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