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Deployment algorithms of multi-UAV-BS networks with frequency reuse and power optimization

Yanzhi Hu, Chunyuan Tian, Dawei Ma, Zhiyong Shi and Fengbin Zhang ()
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Yanzhi Hu: Army Engineering University of PLA
Chunyuan Tian: Army Engineering University of PLA
Dawei Ma: Army Engineering University of PLA
Zhiyong Shi: Army Engineering University of PLA
Fengbin Zhang: Army Engineering University of PLA

Telecommunication Systems: Modelling, Analysis, Design and Management, 2024, vol. 86, issue 4, No 8, 729-741

Abstract: Abstract Deploying unmanned aerial vehicle base stations (UAV-BSs) to provide wireless access for terrestrial users is an alternative solution in emergency scenarios. Due to the dynamic nature of UAV-BSs and strong line-of-sight (LoS) transmission, co-frequency networking worsens the interference suffered by edge users, while the use of fully orthogonal channels for all UAV-BSs also faces the problem of frequency resource constraints. This paper develops a new deployment scheme by combining multiple UAV-BS locations, limited frequency reuse and power optimization. Thus, the nonlinear constrained optimization model is proposed to maximize user coverage. To reduce the computational complexity, the basic multi-UAV-BS network layout is first determined by polycentric clustering and connectivity adjustment based on user location distribution. Then, a genetic algorithm is used to optimize the multi-UAV-BS frequency arrangement and power adjustment to obtain the model solution. Simulations verify the effectiveness of the proposed scheme and evaluate the impact of co-channel interference.

Keywords: UAV-BSs; Deployment; Frequency reuse; Power optimization (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11235-024-01164-z

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