Telecommunications UAV Trajectory Optimization With The Aim Of Energy-EfficiencyMaximization Using Quadratic Transformation Method (QT)

Articles in Press

Document Type : Original Article

Authors

1 Department of Electrical Engineering, Imam Khomeini International University,

2 Department of Electrical Engineering at Imam Khomeini International University (IKIU)

Abstract

Wireless communication utilizing UAVs is recognized as a promising technology for future communication systems. In this paper, we investigate the energy-efficient communication between a UAV and a ground terminal by optimizing the UAV’s flight path, under the assumption that the UAV flies horizontally at a fixed altitude. This design approach jointly considers communication power and UAV energy consumption.To achieve this objective, we first introduce a theoretical model for the propulsion energy consumption of fixed-wing UAVs, which is a function of the UAV’s speed, direction, and flight acceleration. Building upon this derived model, and by disregarding signal processing energy consumption and radiated energy, we define the energy efficiency of UAV communication. This is quantified as the total number of transmitted information bits normalized by the propulsion energy consumed by the UAV over a defined time period. For an efficient design aimed at maximizing the energy efficiency of a UAV with general path constraints, including initial and final positions and speeds, as well as minimum or maximum speed and acceleration, we propose a Quadratic Transformation (QT) method. This method has demonstrated an increase in energy efficiency of 0.31 kbits/joule when compared to methods presented in previous research.

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Tabriz Journal of Electrical Engineering

Articles in Press, Corrected Proof
Available Online from 07 August 2025

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