Deep Learning-Based Link Quality Estimation for RIS-Assisted UAV-Enabled Wireless Communications System

Author:

Tesfaw Belayneh Abebe1ORCID,Juang Rong-Terng2ORCID,Tai Li-Chia3ORCID,Lin Hsin-Piao2ORCID,Tarekegn Getaneh Berie3ORCID,Nathanael Kabore Wendenda4

Affiliation:

1. Department of Electrical Engineering and Computer Science, National Taipei University of Technology, Taipei 10608, Taiwan

2. Institute of Aerospace and System Engineering, National Taipei University of Technology, Taipei 10608, Taiwan

3. Department of Electrical and Computer Engineering, National Yang Ming Chiao Tung University, Hsinchu 30010, Taiwan

4. Department of Electronic Engineering, National Taipei University of Technology, Taipei 10608, Taiwan

Abstract

In recent years, unmanned aerial vehicles (UAVs) have become a valuable platform for many applications, including communication networks. UAV-enabled wireless communication faces challenges in complex urban and dynamic environments. UAVs can suffer from power limitations and path losses caused by non-line-of-sight connections, which may hamper communication performance. To address these issues, reconfigurable intelligent surfaces (RIS) have been proposed as helpful technologies to enhance UAV communication networks. However, due to the high mobility of UAVs, complex channel environments, and dynamic RIS configurations, it is challenging to estimate the link quality of ground users. In this paper, we propose a link quality estimation model using a gated recurrent unit (GRU) to assess the link quality of ground users for a multi-user RIS-assisted UAV-enabled wireless communication system. Our proposed framework uses a time series of user channel data and RIS phase shift information to estimate the quality of the link for each ground user. The simulation results showed that the proposed GRU model can effectively and accurately estimate the link quality of ground users in the RIS-assisted UAV-enabled wireless communication network.

Funder

National Science and Technology Council

Publisher

MDPI AG

Subject

Electrical and Electronic Engineering,Biochemistry,Instrumentation,Atomic and Molecular Physics, and Optics,Analytical Chemistry

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