Picallo Guembe, Imanol

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https://academica-e.unavarra.es/handle/2454/49789

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Picallo Guembe

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Imanol

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Ingeniería Eléctrica, Electrónica y de Comunicación

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0000-0003-2109-4731

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751389

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811834

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2016 - 20193
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Now showing 1 - 3 of 3
  • Thumbnail Image
    PublicationOpen Access
    A radio channel model for D2D communications blocked by single trees in forest environments
    (MDPI, 2019) Picallo Guembe, Imanol; Klaina, Hicham; López Iturri, Peio; Aguirre Gallego, Erik; Celaya Echarri, Mikel; Azpilicueta Fernández de las Heras, Leyre; Eguizábal Garrido, Alejandro; Falcone Lanas, Francisco; Alejos, Ana V.; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; Ingeniería Eléctrica, Electrónica y de Comunicación
    In this paper we consider the D2D (Device-to-Device) communication taking place between Wireless Sensor Networks (WSN) elements operating in vegetation environments in order to achieve the radio channel characterization at 2.4 GHz, focusing on the radio links blocked by oak and pine trees modelled from specimens found in a real recreation area located within forest environments. In order to fit and validate a radio channel model for this type of scenarios, both measurements and simulations by means of an in-house developed 3D Ray Launching algorithm have been performed, offering as outcomes the path loss and multipath information of the scenarios under study for forest immersed isolated trees and non-isolated trees. The specific forests, composed of thick in-leaf trees, are called Orgi Forest and Chandebrito, located respectively in Navarre and Galicia, Spain. A geometrical and dielectric model of the trees were created and introduced in the simulation software. We concluded that the scattering produced by the tree can be divided into two zones with different dominant propagation mechanisms: an obstructed line of sight (OLoS) zone far from the tree fitting a log-distance model, and a diffraction zone around the edge of the tree. 2D planes of delay spread value are also presented which similarly reflects the proposed two-zone model.
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    PublicationOpen Access
    Implementation of radiating elements for radiofrequency front-ends by screen-printing techniques for Internet of Things applications
    (MDPI, 2019) Picallo Guembe, Imanol; Klaina, Hicham; López Iturri, Peio; Sánchez, Aitor; Méndez Giménez, Leire; Falcone Lanas, Francisco; Ingeniaritza Elektrikoa, Elektronikoaren eta Telekomunikazio Ingeniaritzaren; Institute of Smart Cities - ISC; Ingeniería Eléctrica, Electrónica y de Comunicación; Gobierno de Navarra / Nafarroako Gobernua, 0011-1365-2017-000103
    The advent of the Internet of Things (IoT) has led to embedding wireless transceivers into a wide range of devices, in order to implement context-aware scenarios, in which a massive amount of transceivers is foreseen. In this framework, cost-effective electronic and Radio Frequency (RF) front-end integration is desirable, in order to enable straightforward inclusion of communication capabilities within objects and devices in general. In this work, flexible antenna prototypes, based on screen-printing techniques, with conductive inks on flexible low-cost plastic substrates is proposed. Different parameters such as substrate/ink characteristics are considered, as well as variations in fabrication process or substrate angular deflection in device performance. Simulation and measurement results are presented, as well as system validation results in a real test environment in wireless sensor network communications. The results show the feasibility of using screen-printing antenna elements on flexible low-cost substrates, which can be embedded in a wide array of IoT scenarios.
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    PublicationOpen Access
    Diseño e implementación de un sistema de monitorización de práctica deportiva de baloncesto basada en entornos contextuales WPAN/WBAN
    (2016) Picallo Guembe, Imanol; Falcone Lanas, Francisco; Escuela Técnica Superior de Ingenieros Industriales y de Telecomunicación; Telekomunikazio eta Industria Ingeniarien Goi Mailako Eskola Teknikoa
    En este proyecto se centra en la tecnología ZigBee aplicada a un sistema de monitorización de práctica deportiva de baloncesto. Se ofrece un completo estudio radioeléctrico teórico y práctico sobre las situaciones que se pueden dar en este deporte. La implementación de esta tecnología en el baloncesto puede suponer un cambio radical tanto para los deportistas como para los espectadores. Ya que se obtienen grandes ventajas como puede ser la información en tiempo real de la colocación de los jugadores de baloncesto que puede servirle al entrenador para que realice la mejor distribución de sus jugadores a la hora de atacar el campo rival.