Mostrando ítems 21-40 de 287

    • Ranura de Banda Ancha en Doble T Sobre Cavidad para Arrays Alimentados en Serie 

      Hernández Escobar, Alberto; Abdo-Sánchez, Elena; Camacho-Peñalosa, Carlos; H (2019-09-16)
      A previous radiating element for series-fed arrays proposed by the authors and based on a Cavity-Backed Slot (CBS) is modified to improve its bandwidth. In order to do that, the slot is modified to reduce its resonance ...
    • Statistical Characterization of the Chunk Size Distribution in DASH 

      Vaca-Rubio, Cristian J.; Gómez, Gerardo; Aguayo-Torres, Maria del Carmen; López Martínez, Francisco Javier (2019-09-13)
      We present a statistical characterization of the segment size distribution of video streaming services based on dynamic adaptive streaming over HTTP (DASH). We first obtain the empirical distributions from traffic captures ...
    • Diseño analítico de filtros multibanda con líneas de transmisión multiconductoras y stubs en abierto 

      Pérez Escribano, Mario; Sánchez Martínez, Juan José; Márquez-Segura, Enrique (2019-09-12)
      A new topology for implementing multiband bandpass filters is presented in this paper. Two identical shortcircuited multiconductor transmission lines (MTL) and several shunt open stubs are interconnected to achieve the ...
    • Mejora de la calidad de experiencia en redes LTE multi-portadora 

      Gijón, Carolina; Marí-Altozano, María Luisa; Luna-Ramírez, Salvador; Toril-Genoves, Matias (2019-09-12)
      In multi-tier cellular networks, effective handover schemes are required to assign users to the most adequate layer. In this paper, a data-driven strategy for traffic steering is proposed to improve the overall Quality of ...
    • Comparación de servicios de video streaming de YouTube 

      Jiménez, Luis Roberto; Solera-Delgado, Marta; Toril-Genoves, Matias (2019-09-12)
      YouTube is one of the most popular services on the Internet, enabling easy streaming of a video (conventional or live) with acceptable video quality. In March 2015, YouTube added 360o video streaming service which provides ...
    • Optimización de la calidad de experiencia en redes LTE mediante el reparto de tráfico 

      Marí-Altozano, María Luisa; Luna-Ramírez, Salvador; Toril-Genoves, Matias; Gijón, Carolina (2019-09-11)
      Due to the huge increase in traffic and services in mobile networks, network management has changed its main focus from Quality of Service (QoS) to a Quality of Experience (QoE) perspective. In addition, SON (Self organization ...
    • Extracción de modelos casi-estáticos para dispositivos no-lineales a partir de medidas en el dominio de la frecuencia 

      Pérez Parras, Sergio; Martín-Guerrero, Teresa M.; Baños Polglase, Juana Daphne; Camacho-Peñalosa, Carlos (2019-09-11)
      In this contribution an extraction method already proposed by authors and suitable for FET-type devices that could be represented by a quasi-static model is illustrated. For the first time, the method is applied to a FET ...
    • Throughput-based quality adaptation for DASH in 5G mobile networks 

      Gomez-Paredes, Gerardo; Aguayo-Torres, Maria del Carmen; Entrambasaguas-Muñoz, José Tomás; Aguilar-Armijo, Jesús; Vaca-Rubio, Cristian J. (2019-09-10)
      Video streaming in mobile networks is currently the most widely used service and its usage is expected to grow exponentially in the next years. Due to the changing conditions of the radio interface, techniques likes Dynamic ...
    • Gestión emocional y del estrés a través del mindfulness para el alumnado de la UMA 

      Aranda-Garrido, Maria Carmen; Gómez, Gerardo; Delgado-Rios, Miriam; Moniche-Bermejo, Laura Maria (2019-09-10)
      En este trabajo se presentan los resultados de la aplicación de un programa basado en mindfulness para la gestión emocional y del estrés de los alumnos de la Universidad de Málaga (UMA). El programa consta de 8 sesiones ...
    • Diseño de filtros ópticos integrados con respuesta espectral arbitraria en tecnología de silicio sobre aislante 

      Pereira-Martín, Daniel; Wangüemert-Pérez, J. Gonzalo; Molina-Fernández, Íñigo; Cheben, Pavel; Schmid, Jens H.; [et al.] (2019-09-10)
      Silicon photonics is one of the most promising technologies nowadays, with myriads of potential applications in communications and sensing. Many of these applications require spectral filters synthesizing arbitrary frequency ...
    • Long-term calibration analysis of scientific echosounders used in research vessels 

      Córdoba Sellés, Pilar; Iglesias Marroig, Magdalena; Ventero Martín, Ana; Nava-Baro, Enrique (2019-07-31)
      The use of scientific multifrequency echosounders like SIMRAD EK60 in resource-assessment surveys of small pelagic fish like sardine or anchovy, has been employed by the Spanish Institute of Oceanography (IEO) for more ...
    • Self-Organizing and Scalable Routing Protocol (SOSRP) for Underwater Acoustic Sensor Networks 

      Kumar Hindu, Sateesh; Hyder, Waheeduddin; Luque-Nieto, Miguel-Angel; Otero-Roth, Pablo; Poncela-Gonzalez, Javier (MDPI, 2019-07-16)
      Underwater Acoustic Sensor Networks (UASN) have two important limitations: a very aggressive (marine) environment, and the use of acoustic signals. This means that the techniques for terrestrial wireless sensor networks ...
    • ¡Las máquinas nos quitan el trabajo! Una introducción a la inteligencia artificial y al deep learning 

      Martínez Murcia, Francisco Jesús (2019-07-30)
      Cada vez aparecen más soluciones tecnológicas que hacen a las máquinas más inteligentes, por lo que el miedo a que nos quiten el trabajo aflora con frecuencia. En esta charla explicaremos como funcionan algunos sistemas ...
    • Throughput-based quality adaptation for DASH in 5G mobile networks 

      Aguilar-Armijo, Jesús; Vaca-Rubio, Cristian J.; Gomez-Paredes, Gerardo; Aguayo-Torres, Maria del Carmen; Entrambasaguas-Muñoz, José Tomás (2019-07-24)
      Video streaming in mobile networks is currently the most widely used service and its usage is expected to grow exponentially in the next years. Due to the changing conditions of the radio interface, techniques likes Dynamic ...
    • Suspended silicon integrated platform for the long-wavelength mid-infrared band 

      Sanchez-Postigo, Alejandro; Wangüemert-Pérez, J. Gonzalo; Soler-Penadés, Jordi; Ortega-Moñux, Alejandro; Nedeljkovic, Milos; [et al.] (2019-07-18)
      The atmospheric-transmission window and the fingerprint region of many substances overlaps with the long-wave infrared band. This has enabled the emergence of a new path for photonic integrated circuits, which could exploit ...
    • On the use of bianisotropic huygens' metasurfaces to build leaky-wave antennas 

      Abdo-Sánchez, Elena; Chen, M.; Epstein, A.; Eleftheriades, G. V. (2019-07-16)
      Huygens' metasurfaces are considered a powerful tool to achieve anomalous electromagnetic field transformations. They consist of an artifcial surface built of pairs of collocated electric and magetic dipoles that force ...
    • Enhanced sensitivity subwavelength grating waveguides for silicon photonics sensing applications 

      Wanguemert Perez, J. Gonzalo; Hadij-El-Houati, Abdelfettah; Sanchez-Postigo, Alejandro; Leuermann, Jonas; Pereira-Martín, Daniel; [et al.] (2019-07-16)
      In this work we will review the enormous potential of subwavelength grating waveguides for sensing applications in the near and mid-infrared bands, demonstrating the capability to engineer the mode profile to maximize the ...
    • Additive manufacturing of rectangular waveguide devices for teaching microwave laboratory 

      Márquez-Segura, Enrique (2019-07-16)
      In this paper the outline of using of low-cost additive manufacturing FDM/FFF technology to build waveguide devices is presented. The focus is set in a full design from specifications to final measurements in a microwave ...
    • High performance silicon photonic devices based on practical metamaterials 

      Halir, Robert; Luque-González, Jose Manuel; Sánchez-Postigo, Alejandro; Herrero-Bermello, Alaine; González-Andrade, David; [et al.] (2019-07-15)
      Subwavelength grating metamaterials are enabling a new generation of high-performance silicon photonic devices. Here we discuss the fundamental physics along with some of the latest advances in this rapidly expanding field.
    • Design of arbitrary optical filters in silicon-on-insulator using evanescently-coupled Bragg gratings 

      Pereira-Martín, Daniel; Ortega-Moñux, Alejandro; Molina-Fernández, Íñigo; Luque-González, José Manuel; Cheben, Pavel; [et al.] (2019-07-10)
      Spectral filters are experiencing an increasing demand in several applications of the silicon- on-insulator (SOI) platform. Many works have demonstrated that arbitrary frequency responses can be synthesized by apodizing ...