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Showing 1 to 20 of 29 for “"VLC"”.

  1. MAC Layer DATA/ACK Handshake in the Hybrid VLC-RF System

    Zhang, JunyiRice University2016

    The hybrid VLC-RF system utilizes a uni-directional VLC link for downlink and the legacy Wi-Fi link for uplink transmission. However, simply integrating the two links without any modi cation in the MAC layer would cause problems for the MAC layer DATA/ACK handshake. The acknowledgements for VLC …

    rice Repository record

  2. Improvements of VLC (Visible Light Communication) transmissions under illumination constraints : theoretical studies and experiments

    Le Priol, RobinUniversité de Sherbrooke2022

    Les réseaux de communication en lumière visible (VLC) s’appuyant sur l’utilisation de diodes électroluminescentes (LED) bénéficient actuellement d’un intérêt grandissant, en partie grâce à leur robustesse face aux interférences électromagnétiques, leur large bande disponible non-régulée, leur …

    sherbrooke Repository record

  3. Multiple-input multiple-output visible light communication receivers for high data-rate mobile applications

    Chau, Jimmy C.2016

    Visible light communication (VLC) is an emerging form of optical wireless communication that transmits data by modulating light in the visible spectrum. To meet the growing demand for wireless communication capacity from mobile devices, we investigate multiple-input multiple-output (MIMO) VLC to …

    bu Repository record

  4. Simulation, performance and interference analysis of multi-user visible light communication systems

    Aldalbahi, Adel

    … study considers Visible Light Communications (VLC), which is expected to coexist with legacy and future radio frequency (RF) media. While most of the research on VLC has been done on optimizing the physical medium, research on higher network layers is only beginning to gain attention, requiring …

    njit Repository record

  5. High-Speed Organic Photodetectors for Visible Light Communication

    Singh, GurashishUniversity of Cambridge2023

    … In recent years, visible light communication (VLC) has attracted considerable interest for use in in-home and sensor networks. Organic optoelectronic devices such as organic light-emitting diodes (OLEDs) and organic photodetectors (OPDs) have great potential for VLC links because of low-cost …

    cambridge Repository record

  6. Heterogeneous integration of optical wireless communications within next generation networks

    Rahaim, Michael2015

    … OW connection. Visible light communication (VLC) is considered as a potential OW technology due to the increasing adoption of solid state lighting for indoor illumination. Results of this work focus on a full system view of RF/OW HetNets with three primary areas of analysis. First, the need …

    bu Repository record

  7. Resonating Frequencies of a Virtual Learning Community: An Ethnographic Case Study of Online Faculty Development at Columbia College Chicago

    Noffs, David S2016

    … <p>The Virtual Learning Community (VLC) Fellowship program at Columbia College Chicago supports informal, faculty led online communities in an arts-based institution historically resistant to online instruction. The author presents findings from an Ethnographic Case Study of the VLC …

    national-louis Repository record

  8. Fast-Response Switching-Mode Power Converters/Amplifiers for Envelope Tracking Applications and Visible Light Communication

    García Meré, Juan Ramón2025

    … emergentes como la comunicación por luz visible (VLC). Para mejorar el rendimiento de los LPAs, las técnicas de seguimiento de envolvente (ET) han sido ampliamente utilizadas en transmisores RF, modulando la tensión de alimentación en función de la envolvente de la señal. En VLC, que utiliza la …

    oviedo Repository record

  9. High performance III-nitride light-emitting diodes for visible light communications and micro-displays

    Zhang, ShuailongUniversity of Strathclyde2015

    … of micro-LEDs in visible light communications (VLC) and micro-displays. Due to a reduced current crowding effect and superior thermal management capabilities, micro-LEDs can be driven at very high current densities, resulting in high modulation bandwidths of the devices. For this reason, optical …

    strathclyde Repository record

  10. Coexistence of directional and non-directional technologies in 6G wireless dense networks

    Abdalla, Iman2021

    … performance of a visible light communication (VLC) link and propose algorithmic methods as well as novel receiver structures to enhance its quality. Secondly, we study handover algorithms and investigate an AP placement strategy that ties to the system outage probability. Thirdly, we use a …

    bu Repository record

  11. A Machine Learning Based Visible Light Communication Model Leveraging Complementary Color Channel

    Jiang, Ruizhe2020

    … of unobtrusive Visible Light Communication (VLC) using screen-camera channels. They overcomes the inherent drawbacks of traditional approaches based on coded images like bar codes. One popular unobtrusive method is the utilizing of alpha channel or color channels to encode bits into the pixel …

    iupui Repository record

  12. Prompting meaningful analysis from pre-service teachers using elementary mathematics video vignettes

    Beilstein, Shereen OcaUniversity of Illinois at Urbana-Champaign2016

    … Everyday Mathematics Virtual Learning Community (VLC). By altering the framing conditions that accompany video clips on the VLC, this experiment tested whether differences in prompts caused variations in pre-service teachers' depth of commentary. Findings highlight the malleability of pre-service …

    uiuc Repository record

  13. Elucidating the Role of Two Inotropic Agents in Cardiac Hypertrophy: the Ceramides and Apelins

    Wiley, Alexandra M.2024

    … of the putative protective very long-chain (VLC) ceramides 22:0 and 24:0 (CERS2) and detrimental long-chain (LC) 16:0 ceramide (CERS5/6) on cardiomyocyte health and induced hypertrophy. In this work, we demonstrate that the VLC and LC ceramides play contrasting roles in cardiomyocyte health. …

    washington Repository record

  14. Conception et réalisation d'un système portable de communication à travers la lumière visible

    Jebali, AbderrahimUniversité de Moncton2017

    … la communication à travers la lumière visible (VLC) qui assure la transmission de vidéo ou autre type de fichier vers un Smartphone ou autre appareil. la réception de vidéo est assurée par un circuit capable de se connecter à des plates-formes Android, Windows, iOs ou MacOs. La vidéo est …

    moncton Repository record

  15. The Chemical Analysis and Biological Activities of the Secondary Metabolites from Dalea mollis and Dalea albiflora

    Hansen, Nicholas Peter2019

    … of <em>D. albiflora</em> did show activity. VLC fractions three and four of <em>D. albiflora</em> inhibited the growth of the <em>S. cerevisiae</em> expression host and <em>S. cerevisiae</em> overexpressing Snq2 with minimal inhibitory concentrations (MIC) of 42 μg/mL and 87 μg/mL, …

    central-wash Repository record

  16. A Genetic Algorithm Framework using Variable Length Chromosomes for Vehicle Maneuver Planning

    Yu, Benjamin JamesMassachusetts Institute of Technology2022

    … framework with Variable Length Chromosomes (VLC) to find this optimal set of maneuvers. Said framework generates Pareto optimal sets of maneuvers using non-dominated sorting genetic algorithm II (NSGA-II). The use of VLC removes the necessity for a human designer to impose a priori …

    mit Repository record

  17. A new optimization uniformity for indoor visible light communication systems using optical attocells configuration

    Mohammed Gismalla, Mohammed SalihUniversiti Tun Hussein Onn Malaysia2021

    … technology called visible light communications (VLC) was adopted to overcome these challenges. This technology is expected to support 5G and beyond due to its high and free frequency offered, as well as robust security. The main problem of this research is, the distribution of a few numbers of …

    uthm Repository record

  18. A Low-Infrastructure Approach to Indoor Localization and Tracking using Lighting Information

    Edwards, Eric2017

    … the addition of visible light communication (VLC) enabled light fixtures is shown to further improve performance. An experimental demonstration of the proposed system is provided, which indicates that tracking accuracy on the order of ten’s of centimetres is possible with very low …

    mcmaster Repository record

  19. Training the Staff of Vineyard Life Church in Indianapolis, Indiana, in Hermeneutics and Bible Study Methods

    Fox, Charles D.The Southern Baptist Theological Seminary2024

    … The first chapter describes the context at VLC in which the class was offered and explains why it was necessary. Chapter 2 examines selected texts from the Old and New Testaments that illustrate why church leaders are tasked with becoming good students of Scripture. The reason proposed was …

    sbts Repository record

  20. Exposure of 3D organotypic vaginal tissues to semen induces expression of the chemokine MCP-1, but does not alter tissue integrity

    Singh, Subha2018

    … comprised of differentiated epithelium only, and VLC, which has a normal epithelium in addition of fibroblasts and Langerhans cells. We hypothesized that semen is not toxic to the EpiVaginalTM tissue, which is morphologically similar to native vaginal mucosa, and does not induce a proinflammatory …

    bu Repository record

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