Browsing by Author "Castro-Castro, Paula-María"

Now showing items 1-20 of 71

    • A Comparative Study of Low Cost Open Source EEG Devices 

      Laport López, Francisco; Vázquez Araújo, Francisco Javier; Iglesia, Daniel I.; Castro-Castro, Paula-María; Dapena, Adriana (MDPI AG, 2019-08-05)
      [Abstract] A comparison of two open source electroencephalography devices designed to acquire signals associated to the brain activity is presented in this work. The experiments are developed considering the task of ...

    • A framework to learn graph theory using simple wireless network models 

      Dapena, Adriana; Vázquez Araújo, Francisco Javier; Castro-Castro, Paula-María; Souto Salorio, María José (Wiley, 2016-11)
      [Abstract]: In order to improve the student learning process, we present a framework to define attractivecomputer laboratory lessons in Engineering Degrees. Theoretical concepts are illustrated from a practical point ofview ...

    • 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 Channel Estimation Scheme Combining Adaptive Supervised and Unsupervised Algorithms 

      Dapena, Adriana; Labrador, Josmary; Castro-Castro, Paula-María; García-Naya, José A. (IOS Press, 2012)
      [Abstract]: Channel estimation is a fundamental operation in digital communication systems that could be done using supervised or unsupervised (blind) strategies. Supervised techniques estimate the channel parameters using ...

    • 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 ...

    • Adapting Side Information to Transmission Conditions in Precoding Systems 

      Labrador, Josmary; Castro-Castro, Paula-María; Dapena, Adriana; Vázquez-Araújo, Francisco J. (Springer, 2017-05-27)
      [Abstract]: This work proposes an hybrid precoding method in a Multiple-Input/Multiple-Output Frequency Division Duplex (MIMO FDD) system with the objective of reducing the load associated to transmit side information ...

    • 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 ...

    • Avaliación 4.0: avaliación cooperativa en metodoloxías con aprendizaxe invertida 

      Castro-Castro, Paula-María; Dapena, Adriana; Vázquez Araújo, Francisco Javier; Laport López, Francisco (Universidade da Coruña, Cufie, 2019)
      [Resumo] A palabra CAMBIO describe claramente a situación da Educación a todos os niveis (primaria, secundaria e superior) na nosa comunidade e fóra dela, polo que nos preguntamos se estamos preparados para este cambio. ...

    • Brain-Computer Interfaces for Internet of Things 

      Laport López, Francisco; Vázquez Araújo, Francisco Javier; Castro-Castro, Paula-María; Dapena, Adriana (M D P I AG, 2018-09-17)
      [Abstract] A brain-computer interface for controlling elements commonly used at home is presented in this paper. It includes the electroencephalography device needed to acquire signals associated to the brain activity, the ...

    • 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 Covariance Identification in FDD Massive MIMO Systems 

      González-Coma, José P.; Suárez-Casal, Pedro; Castro-Castro, Paula-María; Castedo, Luis; Joham, Michael (IEEE, 2018-11)
      [Abstract]: Many channel estimation methods in Massive MIMO FDD systems usually rely on the knowledge of the channel covariance matrix to operate. However, in real scenarios, this covariance is not known beforehand, and ...

    • 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 ...

    • Design of limited feedback for robust MMSE precoding in multiuser MISO systems 

      Castro-Castro, Paula-María (2009)
      [Resumen] En este trabajo consideramos un sistema multiusuario con múltiples antenas en transmisión y una única antena en cada uno de los usuarios receptores y que se denota por brevedad como MU-MISO, del inglés Multi–User ...

    • 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 ...