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Listar por Entidad UPV "Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia"

Mostrando ítems 41-60 de 1287

A Proof of Concept Study for a Fast Acquisition in a LEO Satellite GPS Receiver

Alcaide-Guillén, Carlos; Vidal Pantaleoni, Ana; Martín-Romero, José Ramón (John Wiley & Sons, 2018)

[EN] The aim of this work is to perform a proof of concept study in order to assess if the pre-correlation differential detector can be used to tackle the GPS signal acquisition in a high dynamics scenario problem. The ...
A QoS-aware routing protocol with adaptive feedback scheme for video streaming for mobile networks

Castellanos Hernández, Wilder Eduardo; Guerri Cebollada, Juan Carlos; Arce Vila, Pau (Elsevier, 2016-03-01)

One of the major challenges for the transmission of time-sensitive data like video over mobile ad-hoc networks (MANETs) is the deployment of an end-to-end QoS support mechanism. Therefore, several approaches and enhancements ...
A Review and Mathematical Treatment of Infinity on the Smith Chart, 3D Smith Chart and Hyperbolic Smith Chart

Pérez Peñalver, María José; Sanabria-Codesal, Esther; Moldoveanu, F.; Moldoveanu, Alin; Asavei, Victor; Müller, Andrei; Ionescu, A. (MDPI AG, 2018)

[EN] This work describes the geometry behind the Smith chart, recent 3D Smith chart tool and previously reported conceptual Hyperbolic Smith chart. We present the geometrical properties of the transformations used in ...
A Second-Generation Digital Terrestrial Television Wireless Return Channel Standard for Providing Internet Connectivity in Rural Areas in Latin America

Radicelli García, Ciro Diego; Cardona Marcet, Narciso; Gómez Barquero, David (Institute of Electrical and Electronics Engineers (IEEE), 2015-09)

This paper proposes the development of a second-generation digital terrestrial television wireless return channel for providing universal Internet a ccess in rural areas in Latin America, namely DVB-RCT2. The ...
A steered response power iterative method for high-accuracy acoustic source localization

Martí Guerola, Amparo; Cobos Serrano, Máximo; López Monfort, José Javier; Escolano Carrasco, José (Acoustical Society of America, 2013-10)

Source localization using the steered response power (SRP) usually requires a costly grid-search procedure. To address this issue, a modified SRP algorithm was recently introduced, providing improved robustness when using ...
A Systematic Design Procedure of Classical Dual-Mode Circular Waveguide Filters Using an Equivalent Distributed Model

Cogollos Borras, Santiago; Brumos Vicente, María; Boria Esbert, Vicente Enrique; Vicente Quiles, Carlos Pascual; Gil Raga, Jordi; Gimeno Martinez, Benito; Guglielmi, Marco (Institute of Electrical and Electronics Engineers (IEEE), 2012-04)

In this paper, we propose a systematic procedure for the accurate design of classical dual-mode filters in circular waveguide technology. The design procedure is based on the previous synthesis of an intermediate distributed ...
A Wideband Diplexer for Ka-Band Passive Intermodulation Measurement

Smacchia, D.; Carceller, C.; Guglielmi, M.; Soto Pacheco, Pablo; Boria Esbert, Vicente Enrique; Ruiz, J.; González-Santatecla, Pablo (IEEE, 2018-06-15)

In this paper we propose a novel Ka-band waveguide diplexer for passive intermodulation (PIM) measurements. Due to the higher operating frequency, this type of measurement setup usually requires wideband filters. In ...
A wireless Sensor Network that use Image Processing for Vineyard Monitoring

Lloret, Jaime; Bosch Roig, Ignacio; Sendra Compte, Sandra; Serrano Cartagena, Arturo (MDPI, 2011)

The first step to detect when a vineyard has any type of deficiency, pest or disease is to observe its stems, its grapes and/or its leaves. To place a sensor in each leaf of every vineyard is obviously not feasible in terms ...
Accelerating Multi-Channel Filtering of Audio Signal on ARM Processors

Belloch Rodríguez, José Antonio; Alventosa, Fran J.; Alonso-Jordá, Pedro; Quintana Ortí, Enrique Salvador; Vidal Maciá, Antonio Manuel (Springer Verlag (Germany), 2017-01)

Tablets and smart phones are nowadays equipped with low-power processor architectures such as the ARMv7 and the ARMv8 series. These processors integrate powerful SIMD units to exploit the intrinsic data-parallelism of ...
Accelerating the SRP-PHAT algorithm on multi and many-core platforms using OpenCL

BADÍA CONTELLES, JOSÉ MANUEL; Belloch Rodríguez, José Antonio; Cobos Serrano, Máximo; IGUAL PEÑA, FRANCISCO DANIEL; Quintana-Ortí, Enrique S. (Springer-Verlag, 2019-03)

[EN] The Steered Response Power with Phase Transform (SRP-PHAT) algorithm is a well-known method for sound source localization due to its robust performance in noisy and reverberant environments. This algorithm is used in ...
Access Control Mechanisms for Femtocells

de la Roche, Guillame; Valcarce, Alvaro; López-Pérez, David; Zhang, Jie (Institute of Electrical and Electronics Engineers, 2010-01)

[EN] Femtocells are a solution that helps to reduce the capital and operational expenditure of a mobile network while enhancing system coverage and capacity. However, the avoidance of interference is still an issue that ...
Accurate and Efficient Design of Double Post Substrate Integrated Waveguide Filters Using Simulators Based on Open Space Modal Expansions

Díaz Caballero, Elena; Morro, J. V.; Esteban González, Héctor; Boria Esbert, Vicente Enrique; Belenguer Martínez, Ángel (IEEE, 2012-11-12)

An Agressive Space Mapping (ASM) strategy for efficiently and accurately designing passive filters in substrate integrated waveguide (SIW) technology is presented and successfully validated for the double post topology. ...
Accurate and efficient matrix exponential computation

Sastre, Jorge; Ibáñez González, Jacinto Javier; Ruiz Martínez, Pedro Antonio; Defez Candel, Emilio (Taylor & Francis (Routledge): STM, Behavioural Science and Public Health Titles, 2014-01)

[EN] This work gives a new formula for the forward relative error of matrix exponential Taylor approximation and proposes new bounds for it depending on the matrix size and the Taylor approximation order, providing a new ...
Accurate broadband measurement of electromagnetic tissue phantoms using open-ended coaxial systems

Fornés Leal, Alejandro; Garcia-Pardo, Concepcion; Castelló-Palacios, Sergio; Vallés Lluch, Ana; Cardona Marcet, Narciso (IEEE, 2007-04-06)

[EN] New technologies and devices for wireless communication networks are continually developed. In order to assess their performance, they have to be tested in realistic environments taking into account the influence of ...
Acoustically driven arrayed waveguide grating

Crespo-Poveda, A.; Hernandez-Minguez, A.; Gargallo Jaquotot, Bernardo Andrés; Biermann, K.; Tahraoui, A.; Santos, P. V.; Munoz, P.; Cantarero, A.; de Lima, M. M. (Optical Society of America: Open Access Journals, 2015-08-10)

We demonstrate compact tunable phased-array wavelength-division multiplexers driven by surface acoustic waves (SAWs) in the low GHz range. The devices comprise two couplers, which respectively split and combine the optical ...
Active learning in digital communications with low-cost software defined radio

Soriano-Asensi, Antonio; Botella-Mascarell, Carmen; Segura-García, Jaume; Roger, Sandra (Editorial Universitat Politècnica de València, 2021-07-26)

[EN] Digital Communications have been traditionally taught in laboratory sessions from a theoretical point of view, using simulation platforms. However, current Academic Accreditation includes the dimension of “what students ...
Active noise control over adaptive distributed networks

Ferrer Contreras, Miguel; Diego Antón, María de; Piñero Sipán, María Gemma; González Salvador, Alberto (Elsevier, 2015-02)

This paper presents the implementation of Active Noise Control (ANC) systems over a network of distributed acoustic nodes. For this purpose we define a general acoustic node consisting of one or several microphones and one ...
Actualización de WINPADRINO utilizando Visual Basic.NET

Vilaplana Herruzo, Jorge (Universitat Politècnica de València, 2013-09-10)

El objetivo principal de este proyecto es la creación de una aplicación estándar que gestione las calificaciones de cada una de las asignaturas de la universidad. En términos un poco menos generales, lo que se desea realizar ...
Adaptación de una emisora FM a DAB (Digital Audio Broadcasting)

Gimeno Muñoz, Natalia (Universitat Politècnica de València, 2013-01-11)

El importante desarrollo y avance de las telecomunicaciones, en concreto en radiodifusión sonora, ha tenido varios factores que ayudan a su progreso y una de ellas es la modulación de frecuencia, inyectándole dinamismo, ...
Adaptación del estudio de radio y televisión de la Universidad Católica de Murcia al sistema digital HD

Hernández Bellot, Jorge (Universitat Politècnica de València, 2015-10-01)

Propuesta detallada, incluyendo la planificación temporal y los presupuestos para la actualización del estudio de radio y televisión que se utiliza en las clases prácticas de la Facultad de comunicación (Grado en Comunicación ...