Listar Ingeniería de Comunicaciones - (IC) por título
Mostrando ítems 284-303 de 446
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NB-IoT latency evaluation with real measurements
(2022-07)In the 3GPP LTE Release 13, NB-IoT was standardized to provide wide-area connectivity for IoT. To optimize network signaling and power consumption, control plane (CP) optimization was introduced. In Release 15, to support ... -
Network Anomaly Classification by Support Vector Classifiers Ensemble and Non-linear Projection Techniques
(Springer, 2013-09)Network anomaly detection is currently a challenge due to the number of different attacks and the number of potential attackers. Intrusion detection systems aim to detect misuses or network anomalies in order to block ports ... -
New open access software designed for the recognition of daily microstructures used in ageing fish
(2014-10-28)Ageing methods for most of the exploited fish species are not validated, and consequently age data series often have important gaps and uncertainty manifesting its consequences on age-based fisheries assessment. In ... -
Next-Generation Self-Organizing Networks through a Machine Learning Approach
(UMA Editorial, 2018-12-17)Para reducir los costes de gestión de las redes celulares, que, con el tiempo, aumentaban en complejidad, surgió el concepto de las redes autoorganizadas, o self-organizing networks (SON). Es decir, la automatización de ... -
Non-homogeneous Fabry-Pérot Antenna Design at Ku-band
(2021-09-21)A novel technique to design Fabry-Pérot antennas with non-homogeneous PRS is described. It takes advantage of a transmission line circuit model to efficiently obtain all necessary unit cell designs that satisfy the cavity ... -
Non-homogeneous Fabry-Pérot antenna design process to improve aperture efficiency
(2022-03-27)A novel technique to design Fabry-Pérot antennas with non-homogeneous partially reflective surfaces (PRSs) is described. It uses a transmission line circuit model to efficiently obtain all necessary unit cell designs that ... -
Novel Implementation for a Cavity-Backed Slot Fed in Transmission Configuration
(2018-04-23)A novel radiating element proposed previously by the authors is alternatively implemented using enclosed microstrip configuration. The radiating element shows broad impedance bandwidth and unidirectional radiation pattern. ... -
Nuevas tendencias en el sector aeroespacial: Space Situational Awareness
(2016-06-30)La conferencia "Nuevas tendencias en el sector aeroespacial: Space Situational Awareness", impartida por el experto José María Hermoso Garnica (INDRA Espacio, ex-ESA, ...) se centra en el nuevo escenario que surge en los ... -
Nuevos esquemas de recepción coherente multipuerto para comunicaciones ópticas
(Servicio de Publicaciones y Divulgación Científica, 2015)Los objetivos de esta Tesis se centran en el estudio y evaluación numérica de nuevos esquemas de recepción coherente multipuerto de sistemas de comunicación por fibra óptica. Se ha desarrollado y validado una herramienta ... -
Obtaining quasi-static models using a frequency domain extraction methodology
(2018-07-02)This contribution illustrates how a realistic nonlinear quasi-static model for FET-type devices can be extracted using an original frequency domain extraction technique. An ideal ‘made-up’ device is built from the measured ... -
Obtención de intervalos de confianza en redes neuronales para predicción en redes celulares
(2022-09)Hoy en día, las redes celulares presentan una complejidad extrema y un alto grado de dinamismo, lo que hace que predecir las fluctuaciones en el rendimiento de la red sea una tarea extremadamente difícil. Gracias a ... -
On Some Unifications Arising from the MIMO Rician Shadowed Model
(IEEE, 2016)This paper shows that the proposed Rician shadowed model for multi-antenna communications allows for the unification of a wide set of models, both for multiple-input multiple-output (MIMO) and single- input single-output ... -
On the Calculation of the Incomplete MGF with Applications to Wireless Communications
(IEEE, 2017)The incomplete moment generating function (IMGF) has paramount relevance in communication theory, since it appears in a plethora of scenarios when analyzing the performance of communication systems. We here present a general ... -
On the connection between noncircularly-symmetric and noncentral fading models: univariate and multivariate analysis
(UMA Editorial, 2017-06-01)This thesis provides new statistical connections between noncircularly-symmetric central and circularly-symmetric noncentral underlying complex Gaussian models. This is particularly interesting since it facilitates the ... -
On the effect of random power availability in wireless power transfer systems with physical layer security
(2020-10-22)In this paper, we evaluate the performance of wireless powered communication systems from a physical layer security perspective. Our aim is to determine under which conditions the random power availability due to wireless ... -
On the eigenstate equivalent circuit for lossy asymmetric two-ports and its applications
(2022)An equivalent-circuit topology for two-port lossy non-symmetric reciprocal networks is presented [1]. The circuit topology is based on the eigenstate decomposition. The proposed circuit consists of two immittances and two ... -
On the Phase Response and Radiation Efficiency of the Complementary Strip-Slot as an Array Element
(2015-05-05)The complementary strip-slot element is a broadlymatched microstrip radiator that has been used to design innovative series-fed arrays. It consists of a microstrip series-fed slot that have its complementary stub on the ... -
On the system performance of DFT-S-OFDM and CP-OFDM for 5G Uplink in mmWave band
(2021-09-20)Both conventional Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) and Discrete Fourier Transform Spread OFDM (DFT-S-OFDM) have been adopted for their use in the Physical Uplink Shared Channel (PUSCH) in ... -
On the use of bianisotropic huygens' metasurfaces to build leaky-wave antennas
(2019-07-16)Huygens' metasurfaces are considered a powerful tool to achieve anomalous electromagnetic field transformations. They consist of an artifcial surface built of pairs of collocated electric and magetic dipoles that force ... -
On the Utility of the Inverse Gamma Distribution in Modeling Composite Fading Channels
(2020-01-20)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 means ...