Results 21 to 30 of about 114 (102)

Fading Evaluation in the 60 GHz Band in Line‐of‐Sight Conditions

open access: yesInternational Journal of Antennas and Propagation, Volume 2014, Issue 1, 2014., 2014
An exhaustive analysis of the small‐scale fading amplitude in the 60 GHz band is addressed for line‐of‐sight conditions (LOS). From a measurement campaign carried out in a laboratory, we have estimated the distribution of the small‐scale fading amplitude over a bandwidth of 9 GHz. From the measured data, we have estimated the parameters of the Rayleigh,
J. Reig   +5 more
wiley   +1 more source

ANÁLISIS DE LOS SISTEMAS MIMO MASIVO MEDIANTE LA COMPARACIÓN DE LOS DETECTORES ZF Y MMSE

open access: yesTelemática, 2023
En el presente artículo se hace un análisis de los sistemas masivos para múltiples entradas y múltiples salidas (MIMO). Se estudia su influencia en lograr una mayor capacidad de transmisión de datos, flexibilidad y confiabilidad para el despliegue de la
Jorge Luis Blanco Orta   +1 more
doaj  

Control predictivo/adaptativo de sistemas complejos utilizando técnicas de ingeniería neuronal

open access: yesRevista Ingenierías Universidad de Medellín, 2018
Se presenta el diseño e implementación de un sistema de control predictivo/adaptativo, utilizando técnicas de ingeniería neuronal para controlar un sistema MIMO no lineal con el objeto de controlar, en una etapa posterior, la temperatura y el nivel en ...
José Gallardo Arancibia   +2 more
doaj   +1 more source

Differences in User Influence on MIMO Handset Antenna Performance in Reverberation Chamber

open access: yesInternational Journal of Antennas and Propagation, Volume 2012, Issue 1, 2012., 2012
User influence on multiple‐input multiple‐output (MIMO) performance is studied for different dual antenna handsets specially designed to have good and bad MIMO performance. The study reveals that user influence can cause either improvement or degradation for different test objects, including a spread effect over the parameters.
Juan D. Sánchez-Heredia   +5 more
wiley   +1 more source

Análisis de controladores por realimentación de estados, control óptimo y lógica difusa, para un péndulo de Furuta

open access: yesIngenius: Revista de Ciencia y Tecnología, 2013
Este trabajo presenta el desarrollo y control de un péndulo invertido rotacional (péndulo de Furuta) mediante controladores en el espacio de estados, control óptimo y lógica difusa. Este tipo de sistemas son las aeronaves, vehículos espaciales, vehículos
Juan Ortiz, Manuel Reinoso
doaj   +1 more source

Design and Implementation of a Hardware Module for MIMO Decoding in a 4G Wireless Receiver

open access: yesVLSI Design, Volume 2008, Issue 1, 2008., 2008
Future 4th Generation (4G) wireless multiuser communication systems will have to provide advanced multimedia services to an increasing number of users, making good use of the scarce spectrum resources. Thus, 4G system design should pursue both higher‐transmission bit rates and higher spectral efficiencies. To achieve this goal, multiple antenna systems
Alberto Jiménez-Pacheco   +3 more
wiley   +1 more source

Validación de modelos neuronales mediante la matriz de ganancias relativas

open access: yesRevista Iberoamericana de Automática e Informática Industrial RIAI
Este trabajo tiene como objetivo principal presentar un procedimiento que complemente a los tradicionales, como es el análisis del error cuadrático medio, en los procesos de validación de modelos neuronales de sistemas multivariables dinámicos (MIMO) no ...
Lucía Iturbe   +3 more
doaj   +1 more source

Experimental Active Vibration Control in Truss Structures Considering Uncertainties in System Parameters

open access: yesMathematical Problems in Engineering, Volume 2008, Issue 1, 2008., 2008
This paper deals with the study of algorithms for robust active vibration control in flexible structures considering uncertainties in system parameters. It became an area of enormous interest, mainly due to the countless demands of optimal performance in mechanical systems as aircraft, aerospace, and automotive structures.
Douglas Domingues Bueno   +5 more
wiley   +1 more source

Control of systems with asymmetric bounds using linear programming: Application to a hydrogen reformer

open access: yesMathematical Problems in Engineering, Volume 2006, Issue 1, 2006., 2006
This paper studies controller design for feedback systems in the presence of asymmetrically bounded signals, using a case study. An asymmetric objective functional is used to consider the asymmetrically bounded signals, which makes possible to derive a linear programming problem.
M. Naib, F. Tadeo, A. Benzaouia
wiley   +1 more source

Análisis objetivo y subjetivo de la compensaciónde salas mediante técnicas Wave-Field Synthesis

open access: yesIteckne, 2009
En el campo de la reproducción de audio espacial, uno de los sistemas más prometedores hoy en día es el sistema de reproducción Wave-Field Synthesis. Dicho sistema proporciona con gran precisión espacial un campo sonoro en una amplia zona de escucha. Sin
Laura Fúster   +3 more
doaj   +1 more source

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