Browsing by Author "García-Naya, José A."
Now showing items 1-20 of 33
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60-GHz Millimeter-Wave Propagation Inside Bus: Measurement, Modeling, Simulation, and Performance Analysis
Chandra, Aniruddha; Rahman, Aniq Ur; Ghosh, Ushasi; García-Naya, José A.; Prokes, Ales; Blumenstein, Jiri (Institute of Electrical and Electronics Engineers, 2019)[Abstract] Millimeter-wave (mmWave) transmission over the unlicensed 60-GHz spectrum is a potential solution to realize high-speed internet access, even inside mass transit vehicles. The solution involves communication ... -
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 MATLAB Interface for Analyzing Conformal Arrays Composed of Polarized Heterogeneous Elements
Brégains, Julio; García-Naya, José A.; González-López, Miguel; Castedo, Luis (Institute of Electrical and Electronics Engineers, 2011-10)[Abstract] As an extension and improvement of a previous work, this paper presents a graphical interface designed with MATLAB®, which is capable of representing both the spatial and electrical configurations of a conformal ... -
A MATLAB Tool for Visualizing the 3D Polar Power Patterns and Excitations of Conformal Arrays
Brégains, Julio; García-Naya, José A.; González-López, Miguel; Dapena, Adriana (Institute of Electrical and Electronics Engineers, 2010-08)[Abstract] This paper describes the implementation of a MATLAB® tool to plot the three-dimensional polar radiation diagram generated by a conformal antenna array. A related tool has also been developed for visualizing the ... -
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 ... -
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 ... -
An overview of IoT architectures, technologies, and existing open-source projects
Domínguez-Bolaño, Tomás; Campos Fernández, Omar; Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A. (Elsevier, 2022-11)[Abstract]: Today’s needs for monitoring and control of different devices in organizations require an Internet of Things (IoT) platform that can integrate heterogeneous elements provided by multiple vendors and using ... -
Analog Video Encoding and Quality Evaluation
Balsa, José; Fresnedo, Óscar; García-Naya, José A.; Domínguez-Bolaño, Tomás; Castedo, Luis (M D P I AG, 2019-07-23)[Abstract] The most widespread analog video encoding systems in the literature are based on the use of the 2D and 3D DCT. These systems use both transformations indistinctly without assessing their suitability. In this ... -
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 ... -
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 ... -
Contextos Universitarios Transformadores: a innovación como eixo vertebrador da docencia. VI Xornadas de Innovación Docente
García-Naya, José A. (Centro Universitario de Formación e Innovación Educativa (CUFIE), Universidade da Coruña, 2022) -
Contextos universitarios transformadores: a nova normalidade académica. Leccións aprendidas e retos de futuro. V Xornadas de Innovación Docente
García-Naya, José A. (Universidade da Coruña, Servizo de Publicacións, 2021) -
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 ... -
Dual-Beam Steerable TMAs Combining AM and PM Switched Time-Modulation
Maneiro-Catoira, Roberto; Brégains, Julio; García-Naya, José A.; Castedo, Luis (MDPI, 2022)[Abstract] Wireless sensor networks (WSN) are increasingly requiring directional antennas that not only provide higher capacity, security, transmission range or robustness against interference, but also contribute with ... -
Environmental Cross-Validation of NLOS Machine Learning Classification/Mitigation with Low-Cost UWB Positioning Systems
Barral Vales, Valentín; Escudero, Carlos J.; García-Naya, José A.; Suárez-Casal, Pedro (M D P I AG, 2019-12-10)[Abstract] Indoor positioning systems based on radio frequency inherently present multipath-related phenomena. This causes ranging systems such as ultra-wideband (UWB) to lose accuracy when detecting secondary propagation ... -
Experimental Evaluation of Flexible Duplexing in Multi-Tier MIMO Networks
Fanjul, Jacobo; Fernández, Renzo D.; Ibáñez, Jesús; García-Naya, José A.; Santamaría, Ignacio (SpringerOpen, 2020-09-24)[Abstract] In this paper, we present an experimental evaluation of the performance benefits provided by flexible duplexing, an access technique that allows uplink and downlink cells to coexist within the same time-frequency ... -
Fine Time Measurement for the Internet of Things: A Practical Approach Using ESP32
Barral Vales, Valentín; Campos Fernández, Omar; Domínguez-Bolaño, Tomás; Escudero, Carlos J.; García-Naya, José A. (Institute of Electrical and Electronics Engineers Inc. (IEEE), 2022)[Abstract]: In the world of Internet of Things (IoT), obtaining the physical location of devices has always been a task of great interest for developing increasingly complex location-based services (LBS). That is why in ... -
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) ...
