no code implementations • 18 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.
no code implementations • 15 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.
no code implementations • 14 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.
no code implementations • 18 Dec 2021 • Alain R. Ndjiongue, Telex M. N. Ngatched, Octavia A. Dobre, Harald Haas
We discuss the concept of DRIS and the application of DSP methods to the physical material.
no code implementations • 10 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.
no code implementations • 8 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.
no code implementations • 9 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.
no code implementations • 6 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.
no code implementations • 7 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.
no code implementations • 15 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.