13 papers
Secrecy Sum Rate Maximization for OIRS-Aided Visible Light Communications with Confidential Messages
Trinh K. Nguyen, Hung K. Hoang, Thanh V. Pham +1
This paper investigates the secrecy sum-rate (SSR) performance of optical intelligent reflecting surface (OIRS)-assisted multi-user visible light communication (VLC) systems under…
Secure RSMA-based Visible Light Networks under Spatial Correlation
Hung K. Hoang, Chuyen T. Nguyen, Thang K. Nguyen +2
This paper investigates the secrecy sum rate (SSR) of rate-splitting multiple access (RSMA)-based visible light communication (VLC) systems considering internal eavesdropping, wher…
Efficient Numerical Modeling of Near-Field Diffraction in ORIS-Assisted Free-Space Optical Links
Tuan A. Hoang, Phuc V. Trinh, Shinya Sugiura +3
This paper investigates near-field propagation in optical reconfigurable intelligent surface (ORIS)-assisted free-space optical (FSO) communication systems. Unlike conventional far…
Multi-user Visible Light Communications with Probabilistic Constellation Shaping and Precoding
Thang K. Nguyen, Thanh V. Pham, Hoang D. Le +2
This paper proposes a joint design of probabilistic constellation shaping (PCS) and precoding to enhance the sum-rate performance of multi-user visible light communications (VLC) b…
Joint Design of Probabilistic Constellation Shaping and Precoding for Multi-user VLC Systems
Thang K. Nguyen, Thanh V. Pham, Hoang D. Le +2
This paper proposes a joint design of probabilistic constellation shaping (PCS) and precoding to enhance the sum-rate performance of multi-user visible light communications (VLC) b…
Practical Design of Probabilistic Constellation Shaping for Physical Layer Security in Visible Light Communications
Thanh V. Pham, Susumu Ishihara
This paper studies a practical design of probabilistic constellation shaping (PCS) for physical layer security in visible light communications (VLC). In particular, we consider a w…
Q-learning-based Joint Design of Adaptive Modulation and Precoding for Physical Layer Security in Visible Light Communications
Duc M. T. Hoang, Thanh V. Pham, Anh T. Pham +1
There has been an increasing interest in physical layer security (PLS), which, compared with conventional cryptography, offers a unique approach to guaranteeing information confide…
Energy-Efficient Precoding Designs for Multi-User Visible Light Communication Systems with Confidential Messages
Son T. Duong, Thanh V. Pham, Chuyen T. Nguyen +1
This paper studies energy-efficient precoding designs for multi-user visible light communication (VLC) systems from the perspective of physical layer security where users' messages…
Design of Energy-Efficient Artificial Noise for Physical Layer Security in Visible Light Communications
Thanh V. Pham, Anh T. Pham, Susumu Ishihara
This paper studies the design of energy-efficient artificial noise (AN) schemes in the context of physical layer security in visible light communications (VLC). Two different trans…
On the Design of Artificial Noise for Physical Layer Security in Visible Light Communication Channels with Clipping
Thanh V. Pham, Steve Hranilovic, Susumu Ishihara
Though visible light communication (VLC) systems are contained to a given room, improving their security is an important criterion in any practical deployment. In this paper, the d…
Design of Artificial Noise for Physical Layer Security in Visible Light Systems with Clipping
Thanh V. Pham, Steve Hranilovic, Susumu Ishihara
Though visible light communication (VLC) systems are contained to a given room, ensuring their security amongst users in a room is essential. In this paper, the design of artificia…
Energy-Efficient Precoding for Multi-User Visible Light Communication with Confidential Messages
Son T. Duong, Thanh V. Pham, Chuyen T. Nguyen +1
In this paper, an energy-efficient precoding scheme is designed for multi-user visible light communication (VLC) systems in the context of physical layer security, where users' mes…
A General Conditional BER Expression of Rectangular QAM in the Presence of Phase Noise
Thanh V. Pham, Thang V. Nguyen, Anh T. Pham
In this paper, we newly present a closed-form bit-error rate (BER) expression for an -ary pulse-amplitude modulation (-PAM) over additive white Gaussian noise (AWGN) channels…