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Frequency conversion of structured light
(Macmillan Publishers, 2016-02-15)
Article.
Accés obert
Article.
Accés obert
Coherent frequency conversion of structured light, i.e. the ability to manipulate the carrier frequency of a wave front without distorting its spatial phase and intensity profile, provides the opportunity for numerous novel ...
Fractal design of multiband and low side-lobe arrays
(1996-05)
Article.
Accés obert
Article.
Accés obert
Most array factor design techniques are highly dependent on the operating wavelength. In this paper, a novel technique based on fractal structures is described for multiband operation. The analysis is focused in two different ...
1.25–2.5 Gb/s simple nyquist transmitters for coherent UDWDM-PON with enhanced spectral efficiency
(2018-04-19)
Article.
Accés obert
Article.
Accés obert
We present a coherent ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON) with enhanced spectral efficiency. The benefit of using Gaussian or Nyquist pulse-shaping filters at the transmitter ...
Near Field RFID Sensing and Imaging
(2009)
Text en actes de congrés.
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Text en actes de congrés.
Accés obert
There is a growing need for designing small self-powered devices, able to sense and deliver
accurate information on the eld distribution around or inside complex media for monitoring and
imaging purposes. Industrial, ...
Disorder-induced temperature fluctuations in nonequilibrium systems
(1992-01)
Article.
Accés restringit per política de l'editorial
Article.
Accés restringit per política de l'editorial
The authors study the effects on heat diffusion related to the presence of a quenched disorder of impurities at the boundaries. A simple lattice model summarizes the main characteristics of the surface through which the ...
Observació de la terra amb sensors pasius de microones
(1994)
Article.
Accés obert
Article.
Accés obert
Dimensionality constraints imposed by highly frequency selective channels on MIMO-FBMC / OQAM systems
(VDE Conference Publications, 2015)
Text en actes de congrés.
Accés restringit per política de l'editorial
Text en actes de congrés.
Accés restringit per política de l'editorial
This paper investigates the application of MIMO to the FBMC/OQAM scheme in highly frequency selective channels. The system model that is considered in this work does not make any assumption about the flatness of the channel. ...
Online detection of action start in untrimmed, streaming videos
(Springer, 2018)
Comunicació de congrés.
Accés obert
Comunicació de congrés.
Accés obert
We aim to tackle a novel task in action detection - Online Detection of Action Start (ODAS) in untrimmed, streaming videos. The goal of ODAS is to detect the start of an action instance, with high categorization accuracy ...
Caracterización de estructuras finline en banda K mediante la técnica de calibración TRL
(1990)
Text en actes de congrés.
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Text en actes de congrés.
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On the estimation of Tsallis entropy and a novel information measure based on its properties
(2023-06-30)
Article.
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Article.
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This letter explores a plug-in estimator of second-order Tsallis entropy based on Kernel Density Estimation (KDE) and its implicit regularization process. First, it is shown that the expected value of the estimator corresponds ...