Listar IC - Artículos por título
Mostrando ítems 54-73 de 209
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Capacity of underwater optical wireless communication systems over salinity-induced oceanic turbulence channels with ISI
Boluda-Ruiz, Rubén
; Salcedo-Serrano, Pedro; Castillo-Vázquez, Beatriz; García-Zambrana, Antonio; Garrido-Balsells, José María (Optica Publishing Group, 2021-07-19)
Point-to-point underwater optical wireless communication (UOWC) links are mainly impaired by scattering due to impurities and turbidity in the open water, resulting in a significant inter-symbol interference (ISI) that ... -
Characterization of a Piezoelectric Acoustic Sensor Fabricated for Low-Frequency Applications: A Comparative Study of Three Methods
(MDPI, 2023-03-02)Piezoelectric transducers are widely used for generating acoustic energy, and choosing the right radiating element is crucial for efficient energy conversion. In recent decades, numerous studies have been conducted to ... -
Ciphered BCH Codes for PAPR Reduction in the OFDM in Underwater Acoustic Channels
Murad, Mohsin; Tasadduq, Imran A.; Otero-Roth, Pablo (IOAP-MDPI, 2022-01-10)
We propose an effective, low complexity and multifaceted scheme for peak-to-average power ratio (PAPR) reduction in the orthogonal frequency division multiplexing (OFDM) system for underwater acoustic (UWA) channels. In ... -
Circular Optical Phased Array with Large Steering Range and High Resolution
(IOAP-MPDI, 2022-08-16)Light detection and ranging systems based on optical phased arrays and integrated silicon photonics have sparked a surge of applications over the recent years. This includes applications in sensing, free-space communications, ... -
Coded-GFDM for Reliable Communication in Underwater Acoustic Channels
Murad, Mohsin; Tasadduq, Imran A.; Otero-Roth, Pablo (IOAP-MPDI, 2022-03-30)
The performance of the coded generalized frequency division multiplexing (GFDM) transceiver has been evaluated in a shallow underwater acoustic channel (UAC). Acoustic transmission is the scheme of choice for communication ... -
Combination of multiple diagnosis systems in self-healing networks
Palacios, David; Jatib Khatib, Emil; Barco-Moreno, Raquel (Elsevier, 2016-07)
The Self-Organizing Networks (SON) paradigm proposes a set of functions to automate network management in mobile communication networks. Within SON, the purpose of Self-Healing is to detect cells with service degradation, ... -
Comments on “Human Body Shadowing in Cellular Device-to-Device Communications: Channel Modeling Using the Shadowed κ−μ Fading Model”
Moreno-Pozas, Laureano; López-Martínez, Francisco Javier; Cotton, Simon L.; París-Ángel, José Francisco; Martos-Naya, Eduardo (Institute of Electrical and Electronics Engineers, 2017-02)
We provide some comments and subsequent corrections to a paper recently published in this Journal (see ibid., vol. 33, no. 1, pp. 111-119, Jan. 2015). More precisely, we show that the pdf for the κ-μ shadowed fading model ... -
Complex network modelling of EEG band coupling in dyslexia: An exploratory analysis of auditory processing and diagnosis
Gallego-Molina, Nicolás J.; Ortiz-García, Andrés; Martínez-Murcia, Francisco Jesús; Giménez-de-la-Peña, Almudena; Formoso, Marco A. (Elsevier, 2022-01-05)
Complex network analysis has an increasing relevance in the study of neurological disorders, enhancing the knowledge of brain’s structural and functional organization. Network structure and efficiency reveal different ... -
Composite Fading Models Based on Inverse Gamma Shadowing: Theory and Validation.
(IEEE, 2021-03-17)We introduce a general approach to characterize composite fading models based on inverse gamma (IG) shadowing. We first determine to what extent the IG distribution is an adequate choice for modeling shadow fading, by ... -
Constrained IoT-based machine learning for accurate glycemia forecasting in Type 1 Diabetes patients
(MDPI, 2023-03-31)Individuals with diabetes mellitus type 1 (DM1) tend to check their blood sugar levels multiple times daily and utilize this information to predict their future glycemic levels. Based on these predictions, patients decide ... -
Contactless AF-SIW phase shifters based on periodic structures at mmWaves
Segura-Gómez, Cleofás; Pérez-Escribano, Mario; Biedma-Pérez, Andrés; Palomares-Caballero, Ángel; Padilla, Pablo (Elsevier, 2024)
This document presents different phase shifter designs implemented in contactless air-filled substrate-integrated waveguide (CLAF-SIW) technology. The phase shifters are based on unit cells that avoid leakage losses in ... -
Cooperative Terrestrial-Underwater Wireless Optical Links by Using an Amplify-and-Forward Strategy
Jurado-Navas, Antonio; Álvarez-Roa, Carmen; Álvarez-Roa, María; Castillo-Vázquez, Miguel (IOAP-MPDI, 2022-03-23)
: In this paper, we analyze a combined terrestrial-underwater optical communication link for providing high-speed optical connectivity between onshore and submerge systems. For this purpose, different transmission signaling ... -
Coordinated Multicast/Unicast Transmission on 5G: A Novel Approach for Linear Broadcasting
Jiménez-Soria, David; Martín-Vega, Francisco-Javier; Aguayo-Torres, María del Carmen (Springer, 2021-09-16)
Linear broadcasting services, with a scheduled programming, constitute a paramount tel-ecommunication service for today’s society. Although the existing technology is mature, current linear broadcast ... -
Data mining for fuzzy diagnosis systems in LTE networks.
Jatib Khatib, Emil; Barco-Moreno, Raquel; Gómez-Andrades, Ana; Muñoz, Pablo; Serrano, Inmaculada (Elsevier, 2015-06-01)
The recent developments in cellular networks, along with the increase in services, users and the demand of high quality have raised the Operational Expenditure (OPEX). Self-Organizing Networks (SON) are the solution to ... -
A data-driven scheduler model for QoE assessment in a LTE radio network planning tool
Sánchez Ordóñez, Pablo Antonio; Luna-Ramírez, Salvador; Gijón-Martín, Carolina; Toril-Genovés, Matías; Bejarano-Luque, Juan Luis (2019-11-19)
The use of static system-level simulators is common practice for estimating the impact of re-planning actions in cellular networks. In this paper, a modification of a classical static Long Term Evolution (LTE) simulator ... -
Deep Residual Transfer Learning for Automatic Diabetic Retinopathy Grading.
Martínez-Murcia, Francisco Jesús; Ortiz-García, Andrés; Ramírez-Aguilar, Francisco Javier; Górriz-Sáez, Juan Manuel; Cruz, Ricardo (Elsevier, 2021-09-10)
Evaluation and diagnosis of retina pathology is usually made via the analysis of different image modalities that allow to explore its structure. The most popular retina image method is retinography, a technique that displays ... -
Design and development of a wayside aI-assisted vision system for online train wheel inspection
Zakir Shaikh, Muhammad; Mehran, Sanaullah; Nava-Baro, Enrique; Manolova, Agata; Aslam Uqaili, Mohammad; Hussain, Tanweer; Shankar Chowdhry, Bhawani[et al.] (Wiley, 2024)
Wayside inspection of rolling stock has been around for some time and wheel impact load and fiber-grating sensors are actively explored for getting high-fidelity data. Visual inspection from wayside provides the opportunity ... -
Design of a Broadband Polarization Splitter Based on Anisotropy-Engineered Tilted Subwavelength Gratings
Herrero-Bermello, Alaine; Luque-González, José Manuel; Villafranca Velasco, Aitor; Ortega-Moñux, Alejandro; Cheben, Pavel; Halir, Robert[et al.] (IEEE Xplore, 2019-06-01)
Polarization management is of paramount importance in integrated optics, partic- ularly for highly birefringent photonic platforms such as silicon-on-insulator. In this paper, we present a polarization beam splitter based ... -
Design of a suspended germanium micro-antenna for efficient fiber-chip coupling in the long-wavelength mid-infrared range
Sánchez-Postigo, Alejandro; Ortega-Moñux, Alejandro; Pereira-Martín, Daniel; Molina-Fernández, Íñigo; Halir, Robert; Cheben, Pavel; Soler Penadés, Jordi; Nedeljkovic, Milos; Mashanovich, Goran Z.; Wanguemert-Pérez, Juan Gonzalo[et al.] (Optica Publishing Group, 2019-08-05)
Recent developments of photonic integrated circuits for the mid-infrared band has opened up a new field of attractive applications for group IV photonics. Grating couplers, formed as diffractive structures on the chip ... -
Designing a 6G testbed for location: Use cases, challenges, enablers and Requirements
Jatib Khatib, Emil; Álvarez-Merino, Carlos Simón; Luo Chen, Hao Qiang; Barco-Moreno, Raquel (IEEE Xplore, 2023-01-30)
Location will have a central role in Research and Development (R&D) towards 6G networks, both as a service offered by the network (improving the current offering of 5G) and as an input to increasingly location-aware services ...