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Listar por autor "Andreu Estellés, Carlos"

Mostrando ítems 1-11 de 11

A class of optimal eighth-order derivative-free methods for solving the Danchick-Gauss problem

Andreu Estellés, Carlos; Cambil Teba, Noelia; Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón (Elsevier, 2014-04-01)

A derivative-free optimal eighth-order family of iterative methods for solving nonlinear equations is constructed using weight functions approach with divided first order differences. Its performance, along with several ...
Estudio, diseño y optimización de antena UWB para comunicaciones intracorporales

Miralles Gómez, Enrique (Universitat Politècnica de València, 2017-05-03)

The aim of this work is to design compact antennas with good radiating properties, to be implemented on the human body (on body antennas) or inside it (in body antennas). These antennas will be used to transmit the ...
Experimental Assessment of Time Reversal for In-Body to In-Body UWB Communications

Andreu-Estellés, Carlos; Garcia-Pardo, Concepcion; Castelló-Palacios, Sergio; Cardona Marcet, Narciso (John Wiley & Sons, 2018-08)

[EN] The standard of in-body communications is limited to the use of narrowband systems. These systems are far from the high data rate connections achieved by other wireless telecommunication services today in force. The ...
Extensión Multivariable del Método de Gauss de Determinación Orbital con Alto Orden de Convergencia

Andreu Estellés, Carlos (Universitat Politècnica de València, 2013-10-18)

El objetivo central de este proyecto es la resolución aproximada de sistemas de ecuaciones no lineales, diseñando una familia de métodos con alto orden de convergencia para su aplicación en el método de Gauss de determinación ...
Frequency Dependence of UWB In-Body Radio Channel Characteristics

Andreu-Estellés, Carlos; Garcia-Pardo, Concepcion; Castelló-Palacios, Sergio; Vallés Lluch, Ana; Cardona Marcet, Narciso (Institute of Electrical and Electronics Engineers, 2018)

[EN] In this letter, a research of ultra-wideband in-body channel by using a high accurate phantom is performed in order to evaluate the impact of frequency dependence of human tissues on the channel characteristics. Hence, ...
Localization for capsule endoscopy at UWB frequencies using an experimental multilayer phantom

Barbi, Martina; Pérez Simbor, Sofía; García Pardo, Concepción; Andreu Estellés, Carlos; Cardona Marcet, Narciso (Institute of Electrical and Electronics Engineers (IEEE), 2018-05)

[EN] Localization inside the human body using ultrawideband (UWB) wireless technology is gaining importance in several medical applications such as capsule endoscopy. Performance analysis of RF based localization techniques ...
Preliminary orbit determination of artificial satellites: a vectorial sixth-order approach

Andreu Estellés, Carlos; Cambil Teba, Noelia; Cordero Barbero, Alicia; Torregrosa Sánchez, Juan Ramón (Hindawi Publishing Corporation, 2013)

A modified classical method for preliminary orbit determination is presented. In our proposal, the spread of the observations is considerably wider than in the original method, as well as the order of convergence of the ...
Spatial In-Body Channel Characterization Using an Accurate UWB Phantom

Andreu Estellés, Carlos; Castelló Palacios, Sergio; García Pardo, Concepción; Fornés Leal, Alejandro; Vallés Lluch, Ana; Cardona Marcet, Narciso (Institute of Electrical and Electronics Engineers (IEEE), 2016-11)

Ultra-wideband (UWB) systems have emerged as a possible solution for future wireless in-body communications. However, in-body channel characterization is complex. Animal experimentation is usually restricted. Furthermore, ...
Ultrawideband Technology for Medical In-Body Sensor Networks: An Overview of the Human Body as a Propagation Medium, Phantoms, and Approaches for Propagation Analysis

Garcia-Pardo, Concepcion; Andreu-Estellés, Carlos; Fornés Leal, Alejandro; Castelló-Palacios, Sergio; Pérez-Simbor, Sofia; Barbi, Martina; Vallés Lluch, Ana; Cardona Marcet, Narciso (Institute of Electrical and Electronics Engineers, 2018)

[EN] An in-body sensor network is that in which at least one of the sensors is located inside the human body. Such wireless in-body sensors are used mainly in medical applications, collecting and monitoring important ...
UWB Path Loss Models for Ingestible Devices

Pérez-Simbor, Sofia; Andreu-Estellés, Carlos; Garcia-Pardo, Concepcion; Frasson, Matteo; Cardona Marcet, Narciso (Institute of Electrical and Electronics Engineers, 2019)

[EN] Currently, some medical devices such as the Wireless Capsule Endoscopy (WCE) are used for data transmission from inside to outside the body. Nevertheless, for certain applications such as WCE, the data rates offered ...
UWB radio channel and diversity characterization for wireless implanted devices

Andreu Estellés, Carlos (Universitat Politècnica de València, 2018-10-30)

Las redes de área corporal permiten la interconexión de nodos independientes situados dentro o fuera de la superficie corporal o, incluso, alejados de dicha superficie. En cuanto a las comunicaciones intracorporales, el ...