Azpilicueta Fernández de las Heras, Leyre
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Azpilicueta Fernández de las Heras
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Leyre
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Ingeniería Eléctrica, Electrónica y de Comunicación
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ISC. Institute of Smart Cities
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Publication Open Access Evaluation of electromagnetic dosimetry of wireless systems in complex indoor scenarios with human body interaction(EMW Publishing, 2012) Aguirre Gallego, Erik; Arpón Díaz-Aldagalán, Javier; Azpilicueta Fernández de las Heras, Leyre; Ramos González, Victoria; Falcone Lanas, Francisco; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa; Gobierno de Navarra / Nafarroako GobernuaIn this work, the influence of human body within the estimation of dosimetric values is analyzed. A simplified human body model, including the dispersive nature of material parameters of internal organs, skin, muscle, bones and other elements has been implemented. Such a model has been included within an indoor scenario in which an in-house 3D ray launching code has been applied to estimate received power levels within the complete scenario. The results enhance previous dosimetric estimations, while giving insight on influence of human body model in power level distribution and enabling to analyze the impact in the complete volume of the scenario.Publication Open Access Analysis and description of HOLTIN service provision for AECG monitoring in complex indoor environments(MDPI, 2013) Led Ramos, Santiago; Azpilicueta Fernández de las Heras, Leyre; Aguirre Gallego, Erik; Martínez de Espronceda Cámara, Miguel; Serrano Arriezu, Luis Javier; Falcone Lanas, Francisco; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaIn this work, a novel ambulatory ECG monitoring device developed in-house called HOLTIN is analyzed when operating in complex indoor scenarios. The HOLTIN system is described, from the technological platform level to its functional model. In addition, by using in-house 3D ray launching simulation code, the wireless channel behavior, which enables ubiquitous operation, is performed. The effect of human body presence is taken into account by a novel simplified model embedded within the 3D Ray Launching code. Simulation as well as measurement results are presented, showing good agreement. These results may aid in the adequate deployment of this novel device to automate conventional medical processes, increasing the coverage radius and optimizing energy consumption.Publication Open Access Evaluation of the Brillouin precursor performance for ultra wide band intra-body technologies(Taylor&Francis, 2013) Falcone Lanas, Francisco; Dawood, Muhammad; Aguirre Gallego, Erik; Azpilicueta Fernández de las Heras, Leyre; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaIn this letter, we describe the formation and the evolution of Brillouin precursorfields through human tissues by using a frequency-domain analysis technique and amulti-pole Cole–Cole model to characterize the dielectric properties of the humanbody tissues, in a frequency band designated by the FCC for ultra wide bandmedical applications, which extends from 0.5 to 20 GHz. A 3D representation of thehuman body model has been implemented by employing a discretized mesh ofcuboids with a resolution of 8 mm3in which the frequency dispersive materialparameters for different tissues have been considered. The dispersive propagation isanalyzed for the purposes of radar imaging and intra-body communications. The per-formance of a classical rectangular pulse, a Brillouin pulse and a medium-matchedwaveform is described. The results show the potential application of this type ofcommunication scheme in order to improve the achievable measurement range andprovide better signal to noise ratios.Publication Open Access Characterization and consideration of topological impact of wireless propagation in a commercial aircraft environment [wireless corner](IEEE, 2013) Rajo-Iglesias, Eva; Aguirre Gallego, Erik; López Iturri, Peio; Azpilicueta Fernández de las Heras, Leyre; Arpón Díaz-Aldagalán, Javier; Falcone Lanas, Francisco; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta ElektronikoaWireless systems are gaining a relevant role for multiple communication tasks within commercial aircrafts. In this work, wireless propagation in an indoor commercial airplane cabin will be analyzed. The impact of indoor elements, such as passenger seats, luggage compartments and a dual deck structure will be considered, with the aid of in-house implemented 3D ray launching code. Multipath propagation plays a relevant role, given by the time domain characteristics obtained by spatially dependent power delay profiles and delay spread. The use of deterministic techniques in order to consider the inherent complexity of the airplane cabin can aid in wireless system planning in order to increase overall system capacity whilst reducing power consumption.