4 papers
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…
Optimization of Probabilistic Constellation Shaping for Optical OFDM Systems with Clipping Distortion
Thanh V. Pham, Susumu Ishihara
Optical orthogonal frequency-division multiplexing (OFDM) and probabilistic constellation shaping (PCS) have emerged as powerful techniques to enhance the performance of optical wi…
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…
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…