• ¡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 ...
    • Leaky-Wave antennas with arbitrary radiation based on bianisotropic Huygens’ metasurfaces 

      Abdo-Sanchez, Maria Elena; Epstein, Ariel; Eleftheriades, George V. (2018-06-05)
      In this contribution, we present the application of Huygens’ metasurfaces (HMS) to the arbitrary design of leaky-wave antennas (LWAs). These metasurfaces have demonstrated their capabiity to tailor the electromagnetic waves ...
    • Limitaciones del equilibrio de carga para la mejora de la calidad de experiencia en redes LTE 

      Marí-Altozano, María Luisa; Luna-Ramírez, Salvador; Toril-Genoves, Matias (URSI 2017, 2017)
      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 Quality of Experience (QoE). In addition, SON (Self Organizing Networks) ...
    • Load balance performance analysis with a quality of experience perspective in LTE networks 

      Marí-Altozano, María Luisa; Luna-Ramírez, Salvador; Toril-Genoves, Matias (2017-09-21)
      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, Self Organising ...
    • Logistic regression for BLER prediction in 5G 

      Ruiz Sicilia, Juan Carlos; Aguayo-Torres, Maria del Carmen (2020-10-09)
      In this work, a block error rate (BLER) predictor for 5G based on logistic regression is presented. The regression is fed with transmission parameters and channel statistics. With these features, the predictor can model ...
    • Long-term calibration analysis of scientific echosounders used in research vessels 

      Cordoba Selles, 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 ...
    • Low limit of detection silicon photonic sensor with extremely-low-cost laser source 

      Leuermann, Jonas; Fernández-Gavela, Adrián; Lechuga, Laura M.; Sánchez-Postigo, Alejandro; Halir, Robert; [et al.] (2020-10-06)
      Integrated photonic biosensors have demonstrated low bulk detection limits down to 1e−7 refractive index units. Nevertheless, most rely on expensive optical sources, such as DFB lasers. Here, we experimentally demonstrate ...
    • Low-cost step aerobics system with virtual aerobics trainer 

      Rosa, Alejandro; Barbancho-Perez, Isabel; Tardon-Garcia, Lorenzo Jose; Barbancho-Perez, Ana Maria (2014-06-30)
      In this paper a low-cost step-aerobics instructor simulation system is presented. The proposed system analyses a given song to iden- tify its rhythmic pattern. Subsequently, this rhythmic pattern is used in order to ...
    • Low-loss curved waveguide grating wavelength demultiplexer 

      Hadij ElHouati, Abdel; Ortega-Moñux, Alejandro; Wanguemert-Perez, Juan Gonzalo; Halir, Robert; Wang, Shurui; [et al.] (2021)
      We demonstrate a compact wavelength demultiplexer for the silicon on insulator platform based on the curved waveguide grating (CWG) architecture. We mitigate off-chip radiation loss by enforcing the single beam condition ...
    • Measuring odd- and even-mode propagation constants of coupled-lines by means of the lattice network 

      Hernández-Escobar, Alberto; Abdo-Sanchez, Maria Elena; Esteban, Jaime; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2019-10-30)
      A classic method for measuring the propagation constant of transmission lines is the one proposed by Bianco and Parodi more than four decades ago [1]. It is based on the invariance of the cross ratio of four complex numbers ...
    • Medida y análisis del tráfico para el control inmersivo de Drones. 

      González, Nuria; Ruiz-Vega, Fernando Jesus; Solera-Delgado, Marta; Luna-Ramírez, Salvador; Toril-Genoves, Matias (2021-09)
      Los vehículos aéreos no tripulados (UAV) han experimentado un creciente desarrollo como factores clave de nuevas aplicaciones en la actualidad, como los servicios vigilancia, control y rescate, la agricultura, la gestión ...
    • 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 ...
    • Metamaterial antenna array fed by distributed Bragg deflector for SOI platform 

      Ginel Moreno, Pablo; Hadij El-Houat, Abdelfettah; Sánchez-Postigo, Alejandro; Wanguemert-Perez, Juan Gonzalo; Molina-Fernandez, Iñigo; [et al.] (2022)
      We propose a distributed Bragg deflector working as a low loss (<0.3 dB) ultra compact beam expander, which generates an on chip Gaussian beam that illuminates a 1D array of 112 optical antennas with a length of 1.5 mm . ...
    • Metamaterial engineered C+L band 90º hybrid with 150 nm feature size 

      Hadij-El-Houati, Abdelfettah; Halir, Robert; Ortega-Moñux, Alejandro; Wanguemert-Perez, Juan Gonzalo; Podmore, Hugh; [et al.] (2020-09-28)
      90º hybrids are important components for coherent optical communications. Conventional implementations only cover the C band, while broadband, metamaterial-based devices require sub-100nm feature sizes. We propose a ...
    • Método Basado en Multilateración para Geolocalización y Sincronización en Redes UMTS 

      García-Fernández, Juan Antonio; Jurado-Navas, Antonio; Fernández-Navarro, Mariano; Úbeda, Carlos (2014-09-16)
      In this work, a method in order to jointly estimate the position of the different User Equipments (UEs) and the Relative Time Differences (RTDs) between base stations in UMTS networks is proposed. This method is based ...
    • Método de Análisis Temporal para Root Cause Analysis en Redes Móviles 

      Luo Chen, Hao Qiang; Khatib, Emil J.; Suárez Peña, José Ramón; Barco-Moreno, Raquel (2019-10-08)
      Troubleshooting encompasses a variety of processes required for the solution of mobile network degradations. These netwoks usually operate correctly, thanks to automatized processes of configuration and optimization, but ...
    • Método de posicionamiento de drones LTE-5G para compensación de fallos en situaciones de emergencia 

      Romero, Ana Rosa; Burgueño, Jesús; De la Bandera Cascales, Isabel; Barco-Moreno, Raquel (2022-09)
      The failures resulting from cells outages or the partial loss of communications infrastructures make it impossible to serve users in the affected area. Such services would allow them to establish communication in order to ...
    • Metodología de monitorización autónoma de redes móviles 

      Trujillo Saborido, José Antonio; De la Bandera Cascales, Isabel; Burgueño Romero, Jesús; Palacios, David; Barco-Moreno, Raquel (2021-09)
      The fifth generation (5G) of mobile networks leads to novel services and heterogeneous scenarios that increase the complexity of management and orchestration tasks. In this context, Self-Organizing Networks (SON) are highly ...
    • Mid-infrared Suspended Waveguide Platform and Building Blocks 

      Wanguemert-Perez, Juan Gonzalo; Sánchez-Postigo, Alejandro; Soler-Penades, Jordi; Ortega-Moñux, Alejandro; Nedeljkovic, Milos; [et al.] (2018-06-05)
      In this work we present our recent progress in the development of a platform for the mid-infrared wavelength range, based on suspended silicon waveguide with subwavelength metamaterial cladding. The platform has some ...
    • Miniaturized top-metallized rectangular dielectric resonator antenna 

      Pérez Escribano, Mario; Herraiz Martínez, Francisco Javier; Márquez-Segura, Enrique (Sección Española de la Unión Científica Internacional de Radio, 2018-09)
      In this paper, a modal analysis of a rectangular dielectric resonator antenna (DRA), with unconventional boundary conditions, is carried out. Analytical equations of the fields inside the resonator and simulations are ...