Mostrando ítems 1-20 de 273

    • Autonomous monitoring framework for cellular networks 

      Trujillo, José Antonio; De la Bandera Cascales, Isabel; Burgueño, Jesús; Palacios, David; Barco-Moreno, Raquel (2022-07)
      The arrival of a new generation of mobile networks as 5G (5th Generation), brings with it greater complexity in the management of the network due to new services and scenarios. In this context, SON (Self-Organizing Networks) ...
    • NB-IoT latency evaluation with real measurements 

      Segura, David; Jatib Khatib, Emil; Munilla-Fajardo, Jorge; Barco-Moreno, Raquel (2022-07)
      In the 3GPP LTE Release 13, NB-IoT was standardized to provide wide-area connectivity for IoT. To optimize network signaling and power consumption, control plane (CP) optimization was introduced. In Release 15, to support ...
    • Metamaterial antenna array fed by distributed Bragg deflector for SOI platform 

      Ginel Moreno, Pablo; Hadij El-Houat, Abdelfettah; Sánchez-Postigo, Alejandro; Wangüemert-Pérez, J. Gonzalo; Molina-Fernández, Íñigo; [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 . ...
    • Inter-channel Granger Causality for Estimating EEG Phase Connectivity Patterns in Dyslexia 

      Rodríguez Rodríguez, Ignacio; Ortiz-Garcia, Andres; Formoso, Marco A.; Gallego-Molina, Nicolás J.; Luque, J.L. (2022)
      Methods like Electroencephalography (EEG) and magnetoencephalogram (MEG) record brain oscillations and provide an invaluable insight into healthy and pathological brain function. These signals are helpful to study and ...
    • Desarrollo de antena espiral con alimentación lateral realizada mediante fabricación aditiva 

      Martín-Bayona, Francisco-José; Pérez-Escribano, Mario; Márquez-Segura, Enrique (2022)
      This contribution presents an step-by-step design and manufacturing of a spiral antenna with lateral feeding mainly for automotive applications. The spiral antenna is intended to work in Ultra-Wide Band (UWB), a new ...
    • Fuentes de error aleatorio en la estimación de la constante de propagación de líneas de transmisión usando medidas de dos puertos 

      Pérez-Escribano, Mario; Márquez-Segura, Enrique (2022)
      In this contribution, we study different error sources that affect the estimation of the propagation constant in broadband methods. For this purpose, a study on the state-of-the-art has been made. The behavior of different ...
    • Temporal phase synchrony disruption in dyslexia: anomaly patterns in auditory processing 

      Formoso Trigo, Marco Antonio; Ortiz-Garcia, Andres; Martınez Murcia, Francisco J.; Aquino Brıtez, Diego; Escobar, Juan José; [et al.] (2022)
      The search for a dyslexia diagnosis based on exclusively objective methods is currently a challenging task. Usually, this disorder is analyzed by means of behavioral tests prone to errors due to their subjective nature; ...
    • Systemic comparison of dielectric and plasmonic biosensors on a silicon photonics platform 

      Sánchez-Ramírez, Ana; Luque-González, Jose Manuel; Wanguemert-Perez, Juan Gonzalo; Molina-Fernandez, Iñigo (2022)
      Plasmonic and dielectric based waveguides are widely used for biosensing applications. However, the use of different sensing architectures and platforms hinders the fair comparison of their respective figures of merit. In ...
    • On the eigenstate equivalent circuit for lossy asymmetric two-ports and its applications 

      Esteban, Jaime; Hernández Escobar, Alberto; Abdo Sánchez, Elena; Mateos Ruíz, Pablo; Martin-Guerrero, Teresa Maria; [et al.] (2022)
      An equivalent-circuit topology for two-port lossy non-symmetric reciprocal networks is presented [1]. The circuit topology is based on the eigenstate decomposition. The proposed circuit consists of two immittances and two ...
    • Polarization-insensitive multimode interference coupler based on bricked subwavelength gratings 

      Pérez-Armenta, Carlos; Ortega-Moñux, Alejandro; Luque-González, Jose Manuel; Halir, Robert; Reyes Iglesias, Pedro José; [et al.] (2022)
      The recently proposed bricked patterning enables enhanced performance in integrated photonics devices based on subwavelength gratings, including polarization insensitivity. We report on the design of a polarization-agnostic ...
    • Curved waveguide grating demultiplexer (CWG) with a flattened response via bimodal output waveguides 

      Hadij ElHouati, Abdel; Halir, Robert; Ortega-Moñux, Alejandro; Wanguemert-Perez, Juan Gonzalo; Schmid, J.H.; [et al.] (2022-05-08)
      We demonstrate a compact wavelength demultiplexer for the silicon-on-insulator platform based on the curved waveguide grating (CWG) architecture. The proposed device uses bi- modal output waveguides to achieve a low-loss ...
    • Performance analysis of equivalent-circuit topologies for periodic leaky-wave antenna rsymmetric Radiators 

      Hernández Escolar, Alberto; Abdo Sánchez, Elena; Mateos Ruíz, Pablo; Esteban, Jaime; Martin-Guerrero, Teresa Maria; [et al.] (2022-04)
      The traditional problem of broadside radiation degradation in leaky-wave antennas has been overcome in the past years with the introduction of some asymmetry in the radiator. This article analyses the performance of two ...
    • Eigenstate equivalent circuit for bi-periodic surfaces: Application to three parallel dipoles 

      Hernández Escobar, Alberto; Abdo Sánchez, Elena; Esteban, Jaime; Martin-Guerrero, Teresa Maria; Camacho-Peñalosa, Carlos (2022-03-29)
      An equivalent circuit for the unit cell of bi-periodic surfaces is proposed. The equivalent circuit is general and simple. It is based on the decomposition of the eigenmodes of the structure and it takes into account the ...
    • Non-homogeneous Fabry-Pérot antenna design process to improve aperture efficiency 

      Mateos Ruíz, Pablo; Abdo Sánchez, Elena; Camacho-Peñalosa, Carlos (2022-03-27)
      A novel technique to design Fabry-Pérot antennas with non-homogeneous partially reflective surfaces (PRSs) is described. It uses a transmission line circuit model to efficiently obtain all necessary unit cell designs that ...
    • Subwavelength-engineered metamaterial devices for integrated photonics 

      Sánchez-Postigo, Alejandro; Ginel-Moreno, Pablo; Pereira-Martín, Daniel; Hadij-ElHouati, Abdelfettah; Luque-González, José Manuel; [et al.] (2022)
      The engineering of subwavelength grating metamaterials has become an essential design strategy in silicon photonics. The lithographic segmentation of integrated waveguides at the subwavelength scale enables the synthesis ...
    • Close detection robotic platform for Search And Rescue missions based on Bluetooth Low Energy 

      Cantizani Estepa, Juan; Bravo Arrabal, Juan; Fernández Lozano, Juan Jesús; Fortes Rodríguez, Sergio; Barco-Moreno, Raquel; [et al.] (2022-02)
      Improvements in telecommunications and digitalization directly improve the efficacy of a wide variety of processes. Recently, detection systems have received considerable attention because of the importance of tracking ...
    • KQI evaluation for 360-Video services over mobile networks 

      Peñaherrera Pulla, Oswaldo; Baena González, Carlos; Fortes Rodríguez, Sergio; Baena Martínez, Eduardo; Barco-Moreno, Raquel (2022-02)
      New generation services have become the pillars and basis for the development of cutting-edge mobile networks as 5G and 6G. These technologies are intended to provide high-quality services which currently are not available, ...
    • UWB and WiFi characterization for localization in construction sites 

      Álvarez Merino, Carlos Simón; Luo Chen, Hao Qiang; Llanes Michel, Joel; Jatib Khatib, Emil; Barco-Moreno, Raquel (2022-02)
      High-precision location is becoming a necessity in the future Industry 4.0 applications that will come up in the near future. However, the construction sector remains particularly obsolete in the adoption of Industry 4.0 ...
    • Failure management insights in 5G using ns-3 network simulator 

      Tarrías Muñoz, Antonio; Fortes Rodríguez, Sergio; Barco-Moreno, Raquel (2022-02)
      Failure management has been one of the most researched fields in cellular networks paradigm. Networks operators has experienced many problems on their deployments with each of the past generations. 5G networks aim high to ...
    • Coordination and load analysis of C-RAN in HetNets by graph-partitioning 

      Sánchez, Joaquín; Toril, Matías; Gijón, Carolina; Luna-Ramírez, Salvador; Fernández-Navarro, Mariano (2022-02)
      In 5G systems, ultra-dense networks are a promising technique to cope strong increase of traffic data in mobile communications. In addition, the deployment of indoor small cells offloads the wireless system from macrocells ...