Listar IC - Artículos por título
Mostrando ítems 143-162 de 182
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Random Errors in Broadband Characterization of the Propagation Constant of Transmission Lines Using Multiple Two-Port Measurements
Pérez-Escribano, Mario
; Márquez-Segura, Enrique (IEEE Access, 2021)
In this work, a comparison between three broadband methods used to estimate the propagation constant of planar transmission lines is presented. The goal of this comparison is to study how possible random measurement ... -
Reconfigurability mechanisms with scanning rate control for omega-bianisotropic Huygens’ metasurface leaky-wave antennas
Abdo-Sánchez, María Elena; Epstein, Ariel; Eleftheriades, George V. (IEEE, 2019)
In this paper, different reconfigurability mechanisms are proposed to scan the pointing direction at a fixed frequency of recently-proposed leaky-wave antennas based on omega-bianisotropic Huygens' metasurfaces. The ... -
Secure communication for FSO links in the presence of eavesdropper with generic location and orientation
Boluda-Ruiz, Rubén; Castillo-Vázquez, Beatriz; García-Zambrana, Antonio; Qaraqe, Khalid (Optica Publishing Group, 2019)
When the beam waist at the receiver is significantly larger than the receiver size, free-space optical (FSO) links may be vulnerable to some optical tapping risks at the physical layer. In this paper, we conduct a new ... -
Self-Healing Framework for Next-Generation Networks through Dimensionality Reduction.
Palacios, David; Fortes-Rodríguez, Sergio; De la Bandera Cascales, Isabel; Barco-Moreno, Raquel (IEEE, 2018-07-25)
Next generation self-organizing networks (NGSONs) are the key that will lead to the full automation of the network management in the forthcoming generations of cellular communications. New challenges, like the deployment of ... -
Self-healing in mobile networks with big data
Jatib Khatib, Emil; Barco-Moreno, Raquel; Muñoz, Pablo; De la Bandera Cascales, Isabel; Serrano, Inmaculada (IEEE, 2016-01)
Mobile networks have rapidly evolved in recent years due to the increase in multimedia traffic and offered services. This has led to a growth in the volume of control data and measurements that are used by self-healing ... -
Self-Organized Ad Hoc Mobile (SOAM) Underwater Sensor Networks.
Hyder, Waheeduddin; Kumar, Jitander; Luque-Nieto, Miguel Ángel; Laghari, Asif Ali; Otero-Roth, Pablo (IEEE, 2022)
The need of underwater wireless sensor networks (UWSNs) having mobile sensor nodes has been there for a long time in form of underwater warfare or explorations by autonomous underwater vehicles (AUVs) or remote unmanned ... -
Self-Organized Fast Routing Protocol for Radial Underwater Networks.
Hyder, Waheeduddin; Poncela-González, Javier; Luque-Nieto, Miguel Ángel; Otero-Roth, Pablo (MDPI, 2018-11-28)
An underwater wireless sensor networks (UWSNs) is an emerging technology for environmental monitoring and surveillance. One of the side effects of the low propagation speed of acoustic waves is that routing protocols of ... -
Self-Organizing and Scalable Routing Protocol (SOSRP) for Underwater Acoustic Sensor Networks
Kumar Hindu, Sateesh; Hyder, Waheeduddin; Luque-Nieto, Miguel Ángel; Otero-Roth, Pablo; Poncela-González, 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 ... -
Self-Tuning of Service Priority Parameters for Optimizing Quality of Experience in LTE
Oliver, Pablo; Toril-Genovés, Matías; Luna-Ramírez, Salvador; Garcia Garaluz, Rafael (IEEE Xplore, 2017-11-23)
Rising user expectations are changing the way mobile operators manage their networks. In this paper, a self-tuning algorithm for adjusting parameters in a multiservice packet scheduler of a Long-Term Evolution base station ... -
Silicon subwavelength modal Bragg grating filters with narrow bandwidth and high optical rejection
Oser, Dorian; Pérez-Galacho, Diego; Le Roux, Xavier; Tanzilli, Sébastien; Vivien, Laurent; Labonté, Laurent; Cassan, Éric; Alonso-Ramos, Carlos[et al.] (Optical Publishing Group, 2020-10-13)
Waveguide Bragg grating filters with narrow bandwidth and high optical rejection are key func- tions for several advanced silicon photonics circuits. Here, we propose and demonstrate a new Bragg grating geometry that ... -
Simplified colorless characterization scheme for coherent receivers in DWDM scenarios using a single interferer
Reyes-Iglesias, Pedro José; Ortega-Moñux, Alejandro; Izquierdo, D.; Garcés, Ignacio; Molina-Fernández, Íñigo (Elsevier, 2024)
Intradyne coherent receivers, capable of detecting an individual wavelength-division multiplexed channel just by tuning the local oscillator frequency, is of great interest for the development of high-capacity flexible ... -
Simplified modeling and optimization of silicon modulators based on free-carrier plasma dispersion effect
Pérez-Galacho, Diego; Marris-Morini, Delphine; Stoffer, R.; Cassan, E.; Baudot, C.; Korthorst, T.; Boeuf, F.; Vivien, L.[et al.] (Optical Publishing Group, 2016-11-04)
n this paper, a simplified model of silicon phase modulators is presented that enables favorable accuracy together with a substantial reduction in computational effort and without the requirement of semiconductor TCAD ... -
Six-Port-Based Architecture for Phase NoiseMeasurement in the UWB Band
Ávila Ruiz, Juan Manuel; Moscoso Mártir, Álvaro; Durán Valdeiglesias, Elena; Moreno-Pozas, Laureano; De-Oliva-Rubio, José; Molina-Fernández, Íñigo[et al.] (Hindawi Publishing Corporation, 2014-06)
A six-port-based frequency discriminator for phase noise measurement is proposed. This circuit makes use of a delay line discriminator configuration, thus not requiring reference oscillator. Furthermore, the use of a ... -
SOS Application Under Android: Help Pro
Yousuf Khan, Ali; Luque-Nieto, Miguel Ángel; Batool, Samiya; Ahmed, Hammad; Hadi Saeed, Abdul; Asif, Zaid[et al.] (Springer, 2022-10-08)
Information and Communication Technologies are regularly used in medical services and associations around the world. An increasing number of devices running Android as Smartphones, smart TV and tablets, are comprehensively ... -
Statistical Agnostic Mapping: A framework in neuroimaging based on concentration inequalities.
Górriz-Sáez, Juan Manuel; Jiménez-Mesa, Carmen; Romero-García, Raúl; Segovia, Fermín; Ramírez, Javier; Castillo-Barnes, Diego; Martínez-Murcia, Francisco Jesús; Ortiz-García, Andrés; Salas-González, Diego; Álvarez-Illán, Ignacio; Puntonet, Carlos; López-García, Diego; Gómez-Río, Manuel; Suckling, John[et al.] (Elsevier, 2020-09-26)
In the 1970s a novel branch of statistics emerged focusing its effort on the selection of a function for the pattern recognition problem that would fulfill a relationship between the quality of the approximation and ... -
Studying the Manifold Structure of Alzheimer’s Disease: A Deep Learning Approach Using Convolutional Autoencoders
Martínez-Murcia, Francisco Jesús; Ortiz-García, Andrés; Górriz-Sáez, Juan Manuel; Ramírez, Javier; Castillo-Barnes, Diego (IEEE, 2020-01-01)
Many classical machine learning techniques have been used to explore Alzheimer’s Disease, evolving from image decomposition techniques such as Principal Component Analysis towards higher-complexity, non-linear decomposition ... -
Subwavelength engineering and asymmetry: two efficient tools for sub-nanometer-bandwidth silicon Bragg filters
Oser, Dorian; Pérez-Galacho, Diego; Alonso-Ramos, Carlos; Le Roux, Xavier; Tanzilli, Sébastien; Vivien, Laurent; Labonté, Laurent; Cassan, Éric[et al.] (Optical Publishing Group, 2018-07-02)
Bragg filters stand as a key building blocks of the silicon- on-insulator (SOI) photonics platform, allowing the implementation of advanced on-chip signal manipulation. However, achieving narrowband Bragg filters with ... -
Suspended germanium waveguides with subwavelength-grating metamaterial cladding for the mid-infrared band
Sánchez-Postigo, Alejandro; Ortega-Moñux, Alejandro; Soler Penadés, Jordi; Osman, Ahmed; Nedeljkovic, Milos; Qu, Zhibo; Wu, Yangbo; Molina-Fernández, Íñigo; Cheben, Pavel; Mashanovich, Goran Z.; Wanguemert-Pérez, Juan Gonzalo[et al.] (Optica Publishing Group, 2021-05-24)
In recent years, sensing and communication applications have fueled important developments of group-IV photonics in the mid-infrared band. In the long-wave range, most platforms are based on germanium, which is transparent ... -
Suspended silicon waveguides for long-wave infrared wavelengths
Soler Penadés, Jordi; Sánchez-Postigo, Alejandro; Nedeljkovic, Milos; Ortega-Moñux, Alejandro; Wangüemert-Pérez, J. Gonzalo; Xu, Yolanda; Halir, Robert; Qu, Zhibo; Khokhar, Ali Z.; Osman, Ahmed; Cao, Wei; Littlejohns, Callum G.; Cheben, Pavel; Molina-Fernández, Íñigo; Mashanovich, Goran Z.[et al.] (Optica Publishing Group, 2018-02-09)
In this Letter, we report suspended silicon waveguides operating at a wavelength of 7.67 μm with a propagation loss of 3.1±0.3 dB/cm. To our knowledge, this is the first demonstration of low-loss silicon waveguides at such ... -
Synthesis of Dual-Band Bandpass Filters With Short-Circuited Multiconductor Transmission Lines and Shunt Open Stubs
Sánchez-Martínez, Juan José; Pérez-Escribano, Mario; Márquez-Segura, Enrique (IEEE, 2019-02-24)
The design of dual-band bandpass filters consisting of series short-circuited wire-bonded multiconductor transmission lines and shunt open stubs is thoroughly carried out in this paper. Two different configurations are ...