no code implementations • 5 Aug 2021 • Mohammed AL-Mekhlafi, Mohamed Amine Arfaoui, Mohamed Elhattab, Chadi Assi, Ali Ghrayeb
The eMBB allocation problem aims at maximizing the eMBB sum rate by jointly optimizing the power allocation at the BS and the RIS phase-shift matrix while satisfying the eMBB rate constraint.
no code implementations • 5 Aug 2021 • Mohamed Amine Arfaoui, Ali Ghrayeb, Chadi Assi, Marwa Qaraqe
In this paper, we investigate the dynamic power allocation for a visible light communication (VLC) cellular system consisting of two coordinating attocells, each equipped with one access-point (AP).
no code implementations • 21 Apr 2021 • Mohamed Amine Arfaoui, Ali Ghrayeb, Chadi Assi, Marwa Qaraqe
In this paper, a proactive-optimization (PO) approach that can alleviate the LiFi channel aging problem is proposed.
no code implementations • 15 Jan 2021 • Mohamed Amine Arfaoui, Ali Ghrayeb, Chadi Assi
Visible light communication (VLC) is an optical wireless communication technology that is considered a promising solution for high-speed indoor connectivity.
no code implementations • 5 Jan 2021 • Mohamed Elhattab, Mohamed Amine Arfaoui, Chadi Assi, Ali Ghrayeb
For the power allocation sub-problem, the optimal closed-form expressions for the power allocation coefficients are derived.
no code implementations • 27 Dec 2020 • Mohammed AL-Mekhlafi, Mohaned Chraiti, Mohamed Amine Arfaoui, Chadi Assi, Ali Ghrayeb, Amira Alloum
Specifically, coupling URLLC and conventional enhanced Mobile BroadBand (eMBB) through superposition/puncturing naturally arises as a promising option due to the tolerance of the latter in terms of latency and reliability.
no code implementations • 9 Nov 2020 • Moataz Samir, Mohamed Elhattab, Chadi Assi, Sanaa Sharafeddine, Ali Ghrayeb
We investigate the benefits of integrating unmanned aerial vehicles (UAVs) with reconfigurable intelligent surface (RIS) elements to passively relay information sampled by Internet of Things devices (IoTDs) to the base station (BS).
no code implementations • 21 Jul 2020 • Mohamed Amine Arfaoui, Mohammad Dehghani Soltani, Iman Tavakkolnia, Ali Ghrayeb, Chadi Assi, Majid Safari, Harald Haas
Light-fidelity (LiFi) is a fully-networked bidirectional optical wireless communication (OWC) that is considered a promising solution for high-speed indoor connectivity.
no code implementations • 28 Dec 2019 • ohaned Chraiti, Dmitry Chizhik, Jinfeng Du, Reinaldo A. Valenzuela, Ali Ghrayeb, Chadi Assi
We demonstrate that the training time required by the proposed scheme is only 5% of that of exhaustive search.
1 code implementation • IEEE Transactions on Wireless Communications 2019 • Moataz Samir, Sanaa Sharafeddine, Chadi M. Assi, Tri Minh Nguyen, Ali Ghrayeb
To this end, we jointly optimize the trajectory of a UAV and the radio resource allocation to maximize the number of served IoT devices, where each device has its own target data upload deadline.