Optimization on Multiuser Physical Layer Security of Intelligent Reflecting Surface-Aided VLC

This letter investigates physical layer security in intelligent reflecting surface (IRS)-aided VL communication (VLC). Under the point source assumption, we first elaborate system model scenario with multiple legitimate users and one eavesdropper, where secrecy rate maximization problem is transformed into an assignment by objective function approximation. Then, iterative Kuhn-Munkres algorithm proposed to optimize problem, its computational complexity second-order form of numbers IRS units transmitters. Moreover, numerical simulations are carried out verify approximation performance VLC improvement IRS.