Listar GI-GTEC - Artigos por autor "Castro-Castro, Paula-María"
Mostrando ítems 1-20 de 33
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A low-cost decision-aided channel estimation method for Alamouti OSTBC
Castro-Castro, Paula-María; Dapena, Adriana; García-Naya, José A.; Labrador, Josmary (Springer, 2013-11)[Abstract] In wireless communication systems, channel state information (CSI) acquisition is typically performed at the receiver side every time a new frame is received, without taking into account whether it is really ... -
A Novel Criterion for Vehicle Classification using Inductive Vehicle Signatures
Lamas-Seco, José J.; Dapena, Adriana; Vázquez-Araújo, Francisco J.; Castro-Castro, Paula-María (Institute of Research Engineers and Doctors (IRED), 2016-04)[Abstract]: Inductive Loop Detectors (ILD) are the most commonly used sensors in traffic management systems. Using the acquired inductive signatures, most proposed systems classify the vehicles using a criterion based ... -
A Novel Hybrid Approach to Improve Performance on Frequency Division Duplex Systems with Linear Precoding
Castro-Castro, Paula-María; García-Naya, José A.; Iglesia, Daniel I.; Dapena, Adriana (Springer, 2010)[Abstrtact] Linear precoding is an attractive technique to combat interference in multiple-input multiple-output systems because it reduces costs and power consumption in the receiver equipment. Most of the frequency ... -
A Novel Strategy for Improving the Quality of Embedded Zerotree Wavelet Images Transmitted over Alamouti Coding Systems
Labrador, Josmary; Castro-Castro, Paula-María; Pérez-Iglesias, Héctor J.; Dapena, Adriana (Springer, 2011)[Abstract] This work deals with the transmission of images, previously coded using the Embedded Zerotree Wavelet (EZW) transform, over wireless systems in which Space-Time Coding (STC) is used. It is shown how the system ... -
A Prototype of EEG System for IoT
Laport López, Francisco; Dapena, Adriana; Castro-Castro, Paula-María; Vázquez Araújo, Francisco Javier; Iglesia, Daniel I. (World Scientific Publishing Co. Pte. Ltd., 2020-05-04)[Abstract] In this work, we develop open source hardware and software for eye state classification and integrate it with a protocol for the Internet of Things (IoT). We design and build the hardware using a reduced number ... -
Adaptación al EEES de las prácticas de Electricidad y Electrónica de la E.T.S. de Náutica y Máquinas de la Universidade da Coruña mediante un diseño basado en competencias
Castro-Castro, Paula-María; Dapena, Adriana; García-Naya, José A.; Iglesia, Daniel I. (Universidade de Vigo, Facultade de Ciencias da Educacion, 2010)[Summary] The adaptation to the European Higher Education Area (EHEA) of the subject of Electricity and Electronics at the Escuela Técnica Superior de Náutica y Máquinas of the University of A Coruña requires important ... -
Algorithms for determining relative position between spheroids and hyperboloids with one sheet
Castro-Castro, Paula-María; Dapena, Adriana; Souto Salorio, María José; Tarrío-Tobar, Ana D. (Elsevier, 2019-06)[Abstract]: In this work we present a new method for determining relative positions between one moving object, modelled by a bounding spheroid, and surrounding static objects, modelled by circular hyperboloids of one sheet. ... -
Aplicación web para evaluación y seguimiento del rendimiento de asignaturas y titulaciones universitarias
Dapena, Adriana; García-Naya, José A.; Castro-Castro, Paula-María; Pan, Christopher (Universidade de Vigo, Facultade de Ciencias da Educacion, 2010)[Summary] The adaptation of the university studies to the current European Higher Education Area (EHEA) requires the set up of mechanisms, which allow performance evaluation of the subjects compounding the new university ... -
Calculation of the Connected Dominating Set Considering Vertex Importance Metrics
Vázquez Araújo, Francisco Javier; Dapena, Adriana; Souto Salorio, María José; Castro-Castro, Paula-María (M D P I AG, 2018-01-28)[Abstract] The computation of a set constituted by few vertices to define a virtual backbone supporting information interchange is a problem that arises in many areas when analysing networks of different natures, like ... -
Channel estimation techniques for linear precoded systems: Supervised, unsupervised, and hybrid approaches
Castro-Castro, Paula-María; García-Naya, José A.; Dapena, Adriana; Iglesia, Daniel I. (Elsevier, 2011-07)[Abstract] Linear precoding is an attractive technique to combat interference in multiple-input multiple-output systems because it reduces cost and power consumption at the receiver. Frequency division duplex systems with ... -
DASBE: Decision-Aided Semi-Blind Equalization for MIMO Systems with Linear Precoding
García-Naya, José A.; Dapena, Adriana; Castro-Castro, Paula-María; Iglesia, Daniel I. (Akademie Ved Ceske Republiky * Ustav Informatiky, 2010)[Abstract] Multiple-Input Multiple-Output (MIMO) digital communications standards usually acquire Channel State Information (CSI) by means of supervised algorithms, which implies a loss of performance since pilot symbols ... -
Detection of channel variations to improve channel estimation methods
Dapena, Adriana; Castro-Castro, Paula-María; García-Naya, José A.; Zarzoso, Vicente (Springer, 2014-08)[Abstract] In current digital communication systems, channel information is typically acquired by supervised approaches that use pilot symbols included in the transmit frames. Given that pilot symbols do not convey user ... -
Una experiencia de aprendizaje basado en proyectos en Ingeniería Informática
Dapena, Adriana; Iglesia, Daniel I.; Castro-Castro, Paula-María; Vázquez Araújo, Francisco Javier (Educación Editora, 2019)[Resumen]: El Plan Bolonia ha provocado una profunda reforma de la enseñanza universitaria, no solo en el planteamiento de las titulaciones, sino también en las metodologías docentes y en las técnicas de evaluación, entre ... -
Eye State Detection Using Frequency Features from 1 or 2-Channel EEG
Laport López, Francisco; Dapena, Adriana; Castro-Castro, Paula-María; Iglesia, Daniel I.; Vázquez Araújo, Francisco Javier (World Scientific Publishing, 2023)[Abstract]: Brain–computer interfaces (BCIs) establish a direct communication channel between the human brain and external devices. Among various methods, electroencephalography (EEG) stands out as the most popular choice ... -
Eye State Identification Based on Discrete Wavelet Transforms
Laport López, Francisco; Castro-Castro, Paula-María; Dapena, Adriana; Vázquez Araújo, Francisco Javier; Fresnedo, Óscar (MDPI, 2021)[Abstract]: We present a prototype to identify eye states from electroencephalography signals captured from one or two channels. The hardware is based on the integration of low-cost components, while the signal processing ... -
FDD Channel Estimation Via Covariance Estimation in Wideband Massive MIMO Systems
González-Coma, José P.; Suárez-Casal, Pedro; Castro-Castro, Paula-María; Castedo, Luis (M D P I AG, 2020-02-10)[Abstract] A method for channel estimation in wideband massive Multiple-Input Multiple-Output systems using hybrid digital analog architectures is developed. The proposed method is useful for Frequency-Division Duplex at ... -
Hybrid Channel Estimation Strategy for MIMO Systems with Decision Feedback Equalizer
Pérez-Iglesias, Héctor J.; Dapena, Adriana; Castro-Castro, Paula-María; García-Naya, José A. (Springer, 2010)[Abstract] We propose to combine supervised and unsupervised algorithms in order to improve the performance of multiple-input multiple-output digital communication systems which make use of differential feedback equalizers ... -
Hybrid Supervised-Unsupervised Channel Estimation Scheme with Dynamic Transmission of Pilots
Dapena, Adriana; Castro-Castro, Paula-María; García-Naya, José A. (Springer, 2011-02)[Abstract] Multiple-Input Multiple-Output (MIMO) digital communications standards typically include pilot symbols in the definition of the transmit signals with the purpose of acquiring the Channel State Information (CSI) ... -
Moving to e-Service Learning in Higher Education
Dapena, Adriana; Castro-Castro, Paula-María; Ares-Pernas, Ana (MDPI, 2022)[Abstract] Service Learning is a methodology in which students achieve academic and transversal competences related to the curriculum of a subject while performing a service for the benefit of the community. With the ... -
New Computation of Resolving Connected Dominating Sets in Weighted Networks
Dapena, Adriana; Iglesia, Daniel I.; Vázquez Araújo, Francisco Javier; Castro-Castro, Paula-María (M D P I AG, 2019-11-29)[Abstract] In this paper we focus on the issue related to finding the resolving connected dominating sets (RCDSs) of a graph, denoted by G. The connected dominating set (CDS) is a connected subset of vertices of G selected ...