Adaptive DRL for IRS Mirror Orientation in Dynamic OWC Networks

2025/05/03 by Hamad, Ahrar N., Qidan, Ahmad Adnan, El-Gorashi, Taisir E. H. +1
#FOS: Electrical engineering #Systems and Control (eess.SY) #electronic engineering #information engineering

paper · doi:10.48550/arxiv.2505.01818

Abstract

Intelligent reflecting surfaces (IRSs) have emerged as a promising solution to mitigate line-of-sight (LoS) blockages and enhance signal coverage in optical wireless communication (OWC) systems with minimal additional power. In this work, we consider a mirror-based IRS to assist a dynamic indoor visible light communication (VLC) environment. We formulate an optimization problem that aims to maximize the sum rate by adjusting the orientation of the IRS mirrors. To enable real-time adaptability, the problem is modelled as a Markov decision process (MDP), and a deep reinforcement learning (DRL) algorithm is developed based on the deterministic policy gradient for real-time mirror-based IRS optimization in dynamic VLC networks. The proposed DRL is employed to optimize mirror orientation toward mobile users under blockage and mobility constraints. Simulation results demonstrate that our proposed DRL algorithm outperforms the conventional deep Q- learning (DQL) algorithm and achieves substantial improvements in sum rate compared to random-orientation IRS configurations

Citations

• Reinforcement Learning for Rate Maximization in IRS-aided OWC Networks
• Intelligent Reflecting Surfaces for Enhanced NOMA-based Visible Light Communications
• Reinforcement Learning for Resource Allocation in Steerable Laser-based\n Optical Wireless Systems
• Secure Visible Light Communications via Intelligent Reflecting Surfaces
• Continuous control with deep reinforcement learning
• Reinforcement Learning: An Introduction

Related

• Reinforcement Learning for Rate Maximization in IRS-aided OWC Networks
• Two-Agent DRL for Power Allocation and IRS Orientation in Dynamic NOMA-based OWC Networks
• Resource Allocation in IRS-aided Optical Wireless Communication Systems
• A Novel Deep Reinforcement Learning-based Approach for Enhancing Spectral Efficiency of IRS-assisted Wireless Systems
• Integration of IRS in Indoor VLC Systems: Challenges, Potential and\n Promising Solutions