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Browsing by Author "Soto, Ismael"

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  • On the path loss performance of underwater visible light communication schemes evaluated in several water environments
    Publication . Almonacid, Lucas; Játiva, Pablo Palacios; Meza, Cesar A. Azurdia; Dujovne, Diego; Soto, Ismael; Firoozabadi, Ali Dehghan; Gutiérrez Gaitán, Miguel
    This paper presents an in-depth study into the necessity of efficient communication systems in underwater environments, with a primary focus on Underwater Visible Light Communication (UVLC). A novel path loss model that adapts to different water types is proposed to improve existing UVLC channel models. Validation against various scenarios, including different water types and receiver aperture diameters, is carried out using Monte Carlo simulations. The results demonstrate the efficiency and accuracy of the model by carefully fitting the actual performance of the UVLC systems. The results show a considerable improvement over previous models that only considered Lambert’s path loss and geometric path loss. Despite some variations observed at larger distances between the transmitter and receiver, the proposed model exhibits significant promise in the understanding and application of UVLC in different underwater environments. This study serves as a preliminary step toward developing more sophisticated and efficient models for UVLC systems.
    2023Conference object Restricted access Show more
  • Performance analysis of a VLC system applied to a hospital environment for IoT- based smart patient monitoring
    Publication . Fernández, Benjamín; Játiva, Pablo Palacios; Azurdia Meza, Cesar A.; Boettcher, Nicolás; Zabala Blanco, David; Gutiérrez Gaitán, Miguel; Soto, Ismael
    This article discusses the deployment of effective communication networks for smart IoT-based smart patient monitoring in medical facilities, advocating for the adoption of Visible Light Communication (VLC) technology. Initially, the physical scenario is analyzed, taking into account factors such as line-of-sight (LOS) and nonline-of-sight (NLOS) channel components. Furthermore, a transmitter is designed to offer a substitute in the event of potential disruptions due to patient motion or loss of line-of-sight elements. The performance of the proposed system is verified under certain performance metrics, such as the Channel Impulse Response (CIR) and the Cumulative Distribution Function (CDF), with respect to power measurements at different points. The results highlight the effects that NLOS rays have on the received data and the received power. Therefore, this study serves as a step towards the development of more sophisticated systems for patient monitoring using enabling technologies such as VLC.
    2024Conference object Restricted access Show more