Search Results for author: Telex M. N. Ngatched

Found 10 papers, 0 papers with code

Liquid Crystal-Based RIS for VLC Transmitters: Performance Analysis, Challenges, and Opportunities

no code implementations18 Aug 2023 Sylvester Aboagye, Telex M. N. Ngatched, Alain R. Ndjiongue, Octavia A. Dobre, Hyundong Shin

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 rate uniformity and maintain adequate illumination.

Deep Reinforcement Learning for RIS-Assisted FD Systems: Single or Distributed RIS?

no code implementations15 Aug 2022 Alice Faisal, Ibrahim Al-Nahhal, Octavia A. Dobre, Telex M. N. Ngatched

It is further shown that the proposed algorithm significantly improves the sum-rate compared to the non-optimized scenario in both single and distributed RIS deployment schemes.

reinforcement-learning Reinforcement Learning (RL)

RIS-Assisted Visible Light Communication Systems: A Tutorial

no code implementations14 Apr 2022 Sylvester Aboagye, Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia Dobre, H. Vincent Poor

Therefore, the skip-zone dilemma must be resolved to ensure the efficient operation of 5G and beyond networks.

Deep Reinforcement Learning for Optimizing RIS-Assisted HD-FD Wireless Systems

no code implementations10 Oct 2021 Alice Faisal, Ibrahim Al-Nahhal, Octavia A. Dobre, Telex M. N. Ngatched

The complexity analysis and Monte Carlo simulations illustrate that the proposed DRL algorithm significantly improves the rate compared to the non-optimized scenario in both HD and FD operating modes using a single parameter setting.

reinforcement-learning Reinforcement Learning (RL)

Design of a Power Amplifying-RIS for Free-Space Optical Communication Systems

no code implementations8 Apr 2021 Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre, Harald Haas

Leveraging on this capacity of a doped LC, we mitigate the double-attenuation faced by the transmitted signal.

Incremental Relaying for Power Line Communication: Performance Analysis and Power Allocation

no code implementations9 Mar 2021 Ankit Dubey, Chinmoy Kundu, Telex M. N. Ngatched, Octavia A. Dobre, Ranjan K. Mallik

By employing power allocation to minimize the outage probability, it is realized that the power should be allocated in accordance with the inter-node distances and channel parameters.

Performance Analysis of RIS-Based nT-FSO Link Over G-G Turbulence With Pointing Errors

no code implementations6 Feb 2021 Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre, Ana G. Armada, Harald Haas

One of the main problems faced by communication systems is the presence of skip-zones in the targeted areas.

Re-configurable Intelligent Surface-based VLC Receivers Using Tunable Liquid-crystals: The Concept

no code implementations7 Jan 2021 Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre, Harald Haas

Visible light communication (VLC) enables access to huge unlicensed bandwidth, a higher security level, and no radio frequency interference.

Towards the Use of Re-configurable Intelligent Surfaces in VLC Systems: Beam Steering

no code implementations15 Sep 2020 Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre, Harald Haas

On the other hand, re-configurable intelligent surface (RIS) is a technology exploited in radio frequency to solve dead zones and loss of signal.

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