Search Results for author: Majid Safari

Found 9 papers, 0 papers with code

Feasibility Conditions for Mobile LiFi

no code implementations20 Dec 2023 Shuai Ma, Haihong Sheng, Junchang Sun, Hang Li, Xiaodong Liu, Chen Qiu, Majid Safari, Naofal Al-Dhahir, Shiyin Li

Then, we derive the expression of LiFi transmission rate based on the m-pulse-amplitude-modulation (M-PAM).

Spatial and Wavelength Division Joint Multiplexing System Design for Visible Light Communications

no code implementations20 Sep 2022 Cheng Chen, Shenjie Huang, Iman Tavakkolnia, Majid Safari, Harald Haas

Instead of providing a new precoder/post-detector design, we investigate the considered joint multiplexing system from a system configuration perspective by tuning system parameters in both spatial and wavelength domains, such as LED positions and optical filter passband.

Multi-User Rate Splitting in Optical Wireless Networks

no code implementations23 Jul 2022 Ahmad Adnan Qidan, Khulood Alazwary, Taisir El-Gorashi, Majid Safari, Harald Haas, Richard V. Penty, Ian H. White, Jaafar M. H. Elmirghani

Rate splitting (RS) is proposed as a transmission scheme to serve multiple users simultaneously by splitting the message of a given user into common and private messages, and then, each user decodes the desired message following a certain procedure.

A Tb/s Indoor MIMO Optical Wireless Backhaul System Using VCSEL Arrays

no code implementations19 Feb 2021 Hossein Kazemi, Elham Sarbazi, Mohammad Dehghani Soltani, Majid Safari, Harald Haas

In this paper, the design of a multiple-input multiple-output (MIMO) optical wireless communication (OWC) link based on vertical cavity surface emitting laser (VCSEL) arrays is systematically carried out with the aim to support data rates in excess of 1 Tb/s for the backhaul of sixth generation (6G) indoor wireless networks.

Information Theory Information Theory

Safety Analysis for Laser-based Optical Wireless Communications: A Tutorial

no code implementations17 Feb 2021 Mohammad Dehghani Soltani, Elham Sarbazi, Nikolaos Bamiedakis, Priyanka de Souza, Hossein Kazemi, Richard V. Penty, Harald Haas, Majid Safari

In this paper, we provide a detailed study of beam propagation to evaluate the received power of various laser sources, based on which as well as the maximum permissible exposure (MPE) defined by the IEC 60825-1:2014 standard, we establish a comprehensive framework for eye safety analyses.

Information Theory Information Theory

End-to-End Energy Efficiency Evaluation for B5G Ultra Dense Networks

no code implementations28 Jul 2020 Yu Fu, Mohammad Dehghani Soltani, Hamada Alshaer, Cheng-Xiang Wang, Majid Safari, Stephen McLaughlin, Harald Haas

This paper proposes an end-to-end (e2e) power consumption model and studies the energy efficiency for a heterogeneous B5G cellular architecture that separates the indoor and outdoor communication scenarios in ultra dense networks.

Invoking Deep Learning for Joint Estimation of Indoor LiFi User Position and Orientation

no code implementations21 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.

Position

Analytical Channel Model and Link Design Optimization for Ground-to-HAP Free-Space Optical Communication Networks

no code implementations24 May 2020 Hossein Safi, Akbar Dargahi, Julian Cheng, Majid Safari

Furthermore, closed-form expressions for the outage probability of the considered link under different turbulence regimes are derived.

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