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Browsing by UPV Unit "Universitat Politècnica de València. Instituto Universitario de Telecomunicación y Aplicaciones Multimedia - Institut Universitari de Telecomunicacions i Aplicacions Multimèdia"

Now showing items 21-40 of 563

A pipeline structure for the block QR update in digital signal processing

Dolz, Manuel F.; Alventosa, Fran J.; Alonso-Jordá, Pedro; Vidal Maciá, Antonio Manuel (Springer-Verlag, 2019)

[EN] There exist problems in the field of digital signal processing, such as filtering of acoustic signals that require processing a large amount of data in real time. The beamforming algorithm, for instance, is a process ...
A power consumption monitoring, displaying and evaluation system for home devices

Miquel Murcia, Antoni; Belda Ortega, Román; De Fez Lava, Ismael; Arce Vila, Pau; Fraile Gil, Francisco; Guerri Cebollada, Juan Carlos; Martínez Zaldívar, Francisco José; Gallardo Bermell, Sergio (2013)

[EN] This paper presents an implementation of a smart meter monitoring system based on Arduino platform and accessible from Android mobile devices. On the one hand, it has been developed a measure device, based on Arduino, ...
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 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 ...
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 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 ...
Advanced Compact Setups for Passive Intermodulation Measurements of Satellite Hardware

Smacchia, Davide; Soto Pacheco, Pablo; Boria Esbert, Vicente Enrique; Guglielmi, Marco; Carceller Candau, Carlos; Ruiz-Garnica, Jesús; Galdeano, Jaione; Raboso García-Baquero, David (Institute of Electrical and Electronics Engineers, 2018)

[EN] This paper provides the guidelines for the practical development of novel advanced test beds for passive intermodulation(PIM) measurements. The proposed test beds show high performance and are flexible, allowing for ...
Advanced Filtering Solutions in Coaxial SIW Technology Based on Singlets, Cascaded Singlets, and Doublets

Sirci, Stefano; Sánchez-Soriano, Miguel Ángel; Martínez Pérez, Jorge Daniel; Boria Esbert, Vicente Enrique (Institute of Electrical and Electronics Engineers, 2019-03-04)

[EN] The use of singlets, cascaded singlets and doublets in coaxial substrate integrated waveguide (SIW) technology is proposed in this paper, with the aim of implementing low-loss filters with very compact size and ...
Advanced Network Planning for Time Frequency Slicing (TFS) Toward Enhanced Efficiency of the Next-Generation Terrestrial Broadcast Networks

Giménez Gandia, Jordi Joan; Stare, Erik; Bergsmark, Staffan; Gómez Barquero, David (Institute of Electrical and Electronics Engineers (IEEE), 2015-06)

The allocation of frequencies traditionally used by terrestrial broadcasting (digital dividend) to International Mobile Telecommunication is limiting the evolution of the digital terrestrial television (DTT) networks for ...
Advanced RF Interferometry Structure for Improving Operation Range

Benítez-González, Jesús; Mora Almerich, José (Institute of Electrical and Electronics Engineers, 2018)

[EN] In this letter, a novel structure combining low coherence interferometry (LCI) and microwave photonics (MWP) is proposed. In this case, the electro-optic modulator is strategically placed inside the interferometric ...
Airborne non-contact and contact broadband ultrasounds for frequency attenuation profile estimation of cementitious materials

Gosálbez Castillo, Jorge; Wright, W.M.D.; Jiang, W.; Carrión García, Alicia; Genovés, V.; Bosch Roig, Ignacio (Elsevier, 2018-08)

[EN] In this paper, the study of frequency-dependent ultrasonic attenuation in strongly heterogeneous cementitious materials is addressed. To accurately determine the attenuation over a wide frequency range, it is necessary ...