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Energy Efficient Aerial RIS: Phase Shift Optimization and Trajectory Design by Hammouti, Hajar El; Saoud, Adnane; Ennahkami, Asma; Bergou, El Houcine is a scholarly article available to read on EtoBox.

What is Energy Efficient Aerial RIS: Phase Shift Optimization and Trajectory Design about?

Reconfigurable Intelligent Surface (RIS) technology has gained significant attention due to its ability to enhance the performance of wireless communication systems. The main advantage of RIS is that it can be strategically placed in the environment to control wireless signals, enabling improvements in coverage, capacity, and energy efficiency. In this paper, we investigate a scenario in which a drone, equipped with a RIS, travels from an initial point to a target destination. In this scenario, the aerial RIS (ARIS) is deployed to establish a direct link between the base station and obstructed users. Our objective is to maximize the energy efficiency of the ARIS while taking into account its dynamic model including its velocity and acceleration along with the phase shift of the RIS. To this end, we formulate the energy efficiency problem under the constraints of the dynamic model of the drone. The studied problem is challenging to solve. To address this, we proceed as follows. First, we introduce an efficient solution that involves decoupling the phase shift optimization and the trajectory design. Specifically, the closed-form expression of the phase-shift is obtained using a conve

Author

Hammouti, Hajar El; Saoud, Adnane; Ennahkami, Asma; Bergou, El Houcine

Published

2024

Language

EN