100 citations · 143 across the 10 of their papers we have counts for
11 papers
Underwater Multi-Wavelength Optical Links With Blue Targets and Constraints: Opportunities and Challenges
Alain R. Ndjiongue, Octavia A. Dobre, Hyundong Shin +1
Underwater optical wireless technologies offer multiple advantages over the acoustic technology. Acoustic signals, for instance, are susceptible to noise from marine sources due to…
Maximal Transmission Rate in Omni-DRIS-Assisted Indoor Visible Light Communication Systems
Alain R. Ndjiongue, Octavia A. Dobre, Hyundong Shin
Given the importance of reconfigurable intelligent surfaces (RISs) in next-generation mobile systems, several RIS variants have been proposed in recent years. Omni-digital-RIS (omn…
Liquid Crystal-Based RIS for VLC Transmitters: Performance Analysis, Challenges, and Opportunities
Sylvester Aboagye, Telex M. N. Ngatched, Alain R. Ndjiongue +2
This article presents a novel approach of using reconfigurable intelligent surfaces (RISs) in the transmitter of indoor visible light communication (VLC) systems to enhance data ra…
RIS-Assisted Visible Light Communication Systems: A Tutorial
Sylvester Aboagye, Alain R. Ndjiongue, Telex M. N. Ngatched +2
Recent development of the fifth-generation (5G) of cellular networks has led to their deployment worldwide. As part of the implementation, one of the challenges that must be addres…
Double-Sided Beamforming in OWC Systems Using Omni-Digital Reconfigurable Intelligent Surfaces
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
In this paper, we introduce a variant of reconfigurable intelligent surfaces (RISs) called omni-digital-RISs (DRISs), which allow multiple physical processes, with application to o…
Digital RIS (DRIS): The Future of Digital Beam Management in RIS-Assisted OWC Systems
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
Reconfigurable intelligent surfaces (RIS) have been recently introduced to optical wireless communication (OWC) networks to resolve skip areas and improve the signal-to-noise ratio…
Design of a Power Amplifying-RIS for Free-Space Optical Communication Systems
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
The steering dynamics of re-configurable intelligent surfaces (RIS) have hoisted them to the front row of technologies that can be exploited to solve skip-zones in wireless communi…
Performance Analysis of RIS-Based nT-FSO Link Over G-G Turbulence With Pointing Errors
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +2
One of the main problems faced by communication systems is the presence of skip-zones in the targeted areas. With the deployment of the fifth-generation mobile network, solutions a…
Re-configurable Intelligent Surface-based VLC Receivers Using Tunable Liquid-crystals: The Concept
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
Visible light communication (VLC) enables access to huge unlicensed bandwidth, a higher security level, and no radio frequency interference. With these advantages, VLC emerges as a…
Towards the Use of Re-configurable Intelligent Surfaces in VLC Systems: Beam Steering
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
The emergence of visible light communication (VLC) technology as a solution to solve radio frequency impediments, such as spectrum shortage, is continuously appealing. In addition…
VLC-Based Networking: Feasibility and Challenges
Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre +1
Visible-light communication (VLC) has emerged as a prominent technology to address the radio spectrum shortage. It is characterized by the unlicensed and unexploited high bandwidth…