Listar Ingeniería de Comunicaciones - (IC) por título
Mostrando ítems 361-380 de 459
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Radio interference analysis tool based on GNU Radio
Yébenes Gálvez, José Antonio; Martos-Naya, Eduardo
; Aguayo-Torres, Maria del Carmen; Cárdenas-Angelat, Carlos; Baños-Polglase, Juana Daphne (2019-10-30)
Avoiding interference is one of the main challenges in radio communications. Interference hunting is usually done with costly instruments. In this work, a cost efficient portable tool is described for interference analysis ... -
Random Errors in Broadband Characterization of the Propagation Constant of Transmission Lines Using Multiple Two-Port Measurements
Perez-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 ... -
Ranura de Banda Ancha en Doble T Sobre Cavidad para Arrays Alimentados en Serie
A previous radiating element for series-fed arrays proposed by the authors and based on a Cavity-Backed Slot (CBS) is modified to improve its bandwidth. In order to do that, the slot is modified to reduce its resonance ... -
Re-inventing Multimode Interference Couplers Using Subwavelength Gratings
Ortega-Moñux, Alejandro; Halir, Robert; Maese Novo, Alejandro; Alonso-Ramos, C.; Zavargo-Peche, Luis; Perez-Galacho, Diego; Molina-Fernandez, Iñigo; Wanguemert-Perez, Juan Gonzalo; Cheben, Pavel; Schmid, Jens H.; Lapointe, J.; Xu, D.; Janz, Siegfried[et al.] (European Physical Society, IEEE, The Optical Society, 2013)
We use the concept of subwavelength grating (SWG) refractive-index-engineering to propose and experimentally demonstrate a reduced size, slotted 2x2 MMI coupler. We also present an ultra-broadband 2x2 MMI coupler which ... -
Real-time audio interaction in serious games for music learning
In this LBD, we present several Apps for playing while learning music or for learning music while playing. The core of all the games is based on the good performance of the real-time audio interaction algorithms developed ... -
Receptor coherente integrado ‘colorless’ de gran margen dinámico basado en un acoplador a 120º
Un receptor ‘colorless’ requerirá en su banda de operación de un elevado rechazo en modo común CMRR para reducir eficientemente la interferencia en banda base ocasionada por los canales colindantes al detectado y conseguir ... -
Receptores con diversidad angular para sistemas de comunicaciones ópticas no guiadas
Castillo-Vazquez, Miguel (Universidad de Málaga,Servicio de Publicaciones, 2008)
Como fruto de esta investigación se van a proponer dos nuevos esquemas de receptores con diversidad angular que se caracterizan por estar dotados de capacidad de orientación propia. Con esta nueva capacidad y un algoritmo ... -
Recognizing complex gestures via natural interfaces
Poncela-Gonzalez, Javier; Ben Abdelmoumen, Houda (2018-04-02)
Natural interfaces have revolutionized the way we interact with computers. They have provided in many fields a comfortable and efficient mechanism that requires no computer knowledge, nor artificial controlling devices, ... -
Reparto de tráfico basado en métricas de rendimiento en escenarios con multiconectividad
Burgueño Romero, Jesús; De la Bandera Cascales, Isabel; Palacios, David; Barco-Moreno, Raquel (2019-10-30)
Multi-connectivity (MC) is one of the most relevant features to be introduced in 5G networks, allowing users to simultaneously aggregate radio resources from several network nodes to improve both reliability and data rates. ... -
Resilient RFID Grouping Proofs with Missing Tag Identification
Burmester, Mike; Munilla-Fajardo, Jorge (Springer, 2016)
The adoption of RFID (Radio Frequency Identification) technology has greatly improved the efficiency of inventory control, supply-chain management and logistics. With RFID group scanning, an RFID reader scans a group of ... -
Reutilización Fraccional de Frecuencia con Sectorización sobre Redes Celulares
(2017-09-06)In this paper, we investigate the downlink of homogeneous LTE cellular networks with Fractional Frequency Reuse (FFR) and sectorized antennas where non-ideal radiation patterns have been considered. Three frequency allocation ... -
Robust and tunable integrated polarization rotator
Alonso-Ramos, C.; Halir, Robert; Ortega-Moñux, Alejandro; Cheben, Pavel; Vivien, Laurent; Molina-Fernandez, Iñigo; Marris-Morini, Delphine; Janz, Siegfried; Xu, Danxia; Schmid, Jens[et al.] (2014-03-11)
Integrated polarization rotators suffer from very high sensitivity to fabrication errors. A polarization rotator scheme that substantially increases fabrication tolerances is proposed. In the proposed scheme, two tunable ... -
Sampling Frequency Error Estimators for PRIME v1.4 systems
Giménez, Javier; Cortes-Arrabal, Jose Antonio; Sanz, Alfredo; Díez-del-Río, Luis (2020-07-02)
The performance of PRIME v1.4 systems might be severely degraded by a sampling frequency offset (SFO). This work addresses the problem of the SFO estimation by means of the pilots transmitted in the header and payload ... -
Secure Distributed System inspired by Ant Colonies for Road Traffic Management in Emergency Situations
Peinado-Dominguez, Alberto; Ortiz-Garcia, Andres; Munilla-Fajardo, Jorge (2013-09-04)
In this work, we present a distributed system designed for road traffic management. The system is inspired by the behavior of the ant colonies. The distributed design responds to the particular limitations of an emergency ... -
Selección automática de características para una gestión proactiva eficiente de redes 5G
Mendoza, Jessica; Palacios, David; De la Bandera Cascales, Isabel; Barco-Moreno, Raquel (2019-10-30)
The growth in the number of services, functionalities and users expected with the arrival of the 5th Generation (5G) of mobile communications networks will produce an increase in the complexity of the network management ... -
Selección Dinámica de Celda en los Enlaces Ascendente y Descendente de Redes Heterogéneas: Estudio de las Estratégias Acoplada y Desacoplada
Dynamic cell selection (DCS) and decoupled access are two disruptive candidate schemes for cell association in future 5G networks. DCS provides adaptation to fast channel variations, which results in potential performance ... -
Self-organized Routing For Radial Underwater Networks
Poncela-Gonzalez, Javier (2016-11-29)
Due to significant propagation delay of acoustic waves in underwater communication, terrestrial routing protocols are not applicable for UWSN. To overcome this problem, some routing protocols have been proposed for UWSN ... -
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-Gonzalez, 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-organizing Fast Routing Protocols for Underwater Acoustic Communications Networks
(UMA Editorial, 2020-09-04)Underwater Wireless Sensor Networks (UWSNs) constitute an emerging technology for marine surveillance, natural disaster alert and environmental monitoring. Unlike terrestrial Wireless Sensor Networks (WSNs), electromagnetic ... -
Self-Organizing Networks use cases in commercial deployments
(UMA Editorial, 2021-09)Ince their origins, mobile communication networks have undergone major changes imposed by the need for networks to adapt to user demand. To do this, networks have had to increase in complexity. In turn, complexity has made ...