VLC Systems Research Articles

Performance Improvement in MIMO-OFDM VLC Systems through Combined Adaptive Modulation and Coding with Symbol Decomposition

Performance Improvement in MIMO-OFDM VLC Systems through Combined Adaptive Modulation and Coding with Symbol Decomposition

Performance Analysis of OIRS-Aided Indoor VLC Systems Under Dynamic Human Blockages and Random UE Orientation

Performance Analysis of OIRS-Aided Indoor VLC Systems Under Dynamic Human Blockages and Random UE Orientation

Towards Low Complexity VLC Systems: A Multi-Task Learning Approach

Towards Low Complexity VLC Systems: A Multi-Task Learning Approach

Probabilistic Constellation Shaping for Enhancing Spectral Efficiency in NOMA VLC Systems

Probabilistic Constellation Shaping for Enhancing Spectral Efficiency in NOMA VLC Systems

Fairness Optimization for VLC Systems With Liquid Crystal-Based RIS-Enabled Transmitters

Fairness Optimization for VLC Systems With Liquid Crystal-Based RIS-Enabled Transmitters

Efficient User-Centric AP Clustering Through Stable UE-AP Matching for Indoor VLC Systems

Efficient User-Centric AP Clustering Through Stable UE-AP Matching for Indoor VLC Systems

Neural Network-Based Optimization for SLIPT-Enabled Indoor VLC Systems With Energy Constraints

Neural Network-Based Optimization for SLIPT-Enabled Indoor VLC Systems With Energy Constraints

Interference Mitigation in VLC Systems using a Variable Focus Liquid Lens

Interference Mitigation in VLC Systems using a Variable Focus Liquid Lens

Power Allocation with Meta-heuristic Algorithms for Indoor MIMO-NOMA Based VLC Systems

Power Allocation with Meta-heuristic Algorithms for Indoor MIMO-NOMA Based VLC Systems

A Systematic Review on Non-Orthogonal Multiple Access (NOMA) Based on Visible Light Communication for Intelligent Transportation Systems

Non-Orthogonal Multiple Access (NOMA) is a cutting-edge technology that permits several users to use the same frequency resources and transfer data at once. Visible light communication also known as VLC, is an innovative technology that offers access to an unoccupied spectrum, enables fast data transmission speeds, thereby making it a complementary addition to current radio frequency technology. Although VLC has its advantages, it also comes with some downsides. One major issue is the modulation bandwidth of LEDs, which can be quite challenging when creating high speed VLC systems. Non-orthogonal multiple access (NOMA), particularly power-domain NOMA (PD-NOMA), has become a viable multiple access approach, ensuring sufficient bandwidth allocation for VLC systems. This study delves into multiple access techniques in VLC systems, in particular NOMA, and discusses its fundamental principles, key ideas and practical implementations like vehicular communication. It also addresses the associated hurdles, such as ensuring equitable distribution of optical power among users, leveraging MIMO technology, and grappling with LED nonlinearity issues. In summary, we underscore the significance of utilizing NOMA-VLC technology to enhance wireless communication systems and optimize spectral efficiency.

Efficient downlink MU-MIMO VLC systems with NOMA-OTFS modulation for indoor applications

Efficient downlink MU-MIMO VLC systems with NOMA-OTFS modulation for indoor applications

Double-Sided Beamforming in VLC Systems Using Omni-Digital Reconfigurable Intelligent Surfaces

In this paper, we propose a variant of reconfigurable intelligent surfaces (RISs) called omni-digital-RISs (omni-DRISs), which allows both light reflection and refraction, with application to indoor visible light communication systems. The omni-DRIS contains elements which can be either reflectors or refractors, or both simultaneously. We describe and explain the concept of omni-DRIS, suggest and analyze an omni-DRIS coding structure, discuss metamaterials to be used in the omni-DRIS module, and provide a design example. Furthermore, we demonstrate that the achievable rate of an omni-DRIS system depends on the number of omni-DRIS elements, bits per phase shift, and actively absorbing elements. In addition, we show that the upper bound of the achievable rate is related to the number of omni-DRIS elements, and conclude by discussing future research directions.

Implementation of channel equalization and intrusion detection in VLC systems

Implementation of channel equalization and intrusion detection in VLC systems

PAPR reduction using a combination between precoding and non-linear companding techniques for ACO-OFDM-based VLC systems

PAPR reduction using a combination between precoding and non-linear companding techniques for ACO-OFDM-based VLC systems

Dimming control schemes combining IEEE 802.15.7 and SC-LPPM modulation schemes with an adaptive M-QAM OFDM for indoor LOS VLC systems

Dimming control schemes combining IEEE 802.15.7 and SC-LPPM modulation schemes with an adaptive M-QAM OFDM for indoor LOS VLC systems

Hybrid PAPR reduction schemes for different OFDM-based VLC systems

Hybrid PAPR reduction schemes for different OFDM-based VLC systems

Performance evaluation of UFMC-based VLC systems using a modified SLM technique

Performance evaluation of UFMC-based VLC systems using a modified SLM technique

A proposed preamble channel estimation scheme for flip FBMC-based indoor VLC systems

A proposed preamble channel estimation scheme for flip FBMC-based indoor VLC systems

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

A complexity efficient PAPR reduction scheme for FBMC-based VLC systems

Leveraging IRS Induced Time Delay for Enhanced Physical Layer Security in VLC Systems

Leveraging IRS Induced Time Delay for Enhanced Physical Layer Security in VLC Systems