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Listar por autor "Moreno-Pozas, Laureano"
Mostrando ítems 1-17 de 17
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A new Approach to the Statistical Analysis of Non-Central Complex Gaussian Quadratic Forms With Applications
Ramírez Espinosa, Pablo; Moreno-Pozas, Laureano; París-Ángel, José Francisco
; Cortés-Arrabal, José Antonio
; Martos-Naya, Eduardo
(Institute of Electrical and Electronics Engineers, 2019-07)
This paper proposes a novel approach to the statistical characterization of non-central complex Gaussian quadratic forms (CGQFs). Its key strategy is the generation of an auxiliary random variable that replaces the original ... -
A Tractable Product Channel Model for Line-of-Sight Scenarios.
Fernández-Plazaola, Unai; Moreno-Pozas, Laureano
; López-Martínez, Francisco Javier; París-Ángel, José Francisco
; Martos-Naya, Eduardo
; Romero-Jerez, Juan Manuel
[et al.] (IEEE, 2020-01-06)
We present a general and tractable fading model for line-of-sight (LOS) scenarios, which is based on the product of two independent and non-identically distributed κ-μ shadowed power envelopes. Simple closed-form expressions ... -
Advances in photonic metamaterials and sensing architectures
Halir, Robert; Torres-Cubillo, Antonia; Barona-Ruiz, Miguel; Sánchez-Ramírez, Ana; Luque-González, José Manuel; Moreno-Pozas, Laureano
; Pérez-Armenta, Carlos; Ginel-Moreno, Pablo; Fernández-Hinestrosa, Alejandro; Leuermann, Jonas; De-Oliva-Rubio, José
; Schmid, Jens H.; Ortega-Moñux, Alejandro
; Wanguemert-Pérez, Juan Gonzalo
; Cheben, Pavel; Molina-Fernández, Íñigo
[et al.] (2024)
Subwavelength materials have become a fundamental tool for silicon photonic design, enabling devices with unique performance characteristics. We will briefly review some fundamentals here and will then discuss some of the ... -
Butler Matrix Based Six-port Passive Junction
Moscoso Mártir, Álvaro; Ávila Ruiz, Juan Manuel; Durán Valdeiglesias, Elena; Moreno-Pozas, Laureano; Molina-Fernández, Íñigo
; Ortega-Moñux, Alejandro
; De-Oliva-Rubio, José
[et al.] (2014-02-03)
In this work we propose the utilization of the Butler matrix as a six-port I/Q demodulator. The inherent symmetry of its topology allows to overcome the intrinsic amplitude and phase imbalances of the traditional approaches ... -
Caracterización y Simulación de un Diodo Schottky de Microondas
Moreno-Pozas, Laureano; Durán Valdeiglesias, Elena; Ávila Ruiz, Juan Manuel; Molina-Fernández, Íñigo
(2013-09)
Microwave diode models included in commercial simulators use a large set of parameters, so they are often difficult to set up in order to match the actual response of a specific device. In this paper a simple model for a ... -
Comments on “Human Body Shadowing in Cellular Device-to-Device Communications: Channel Modeling Using the Shadowed κ−μ Fading Model”
Moreno-Pozas, Laureano; López-Martínez, Francisco Javier; Cotton, Simon L.; París-Ángel, José Francisco
; Martos-Naya, Eduardo
(Institute of Electrical and Electronics Engineers, 2017-02)
We provide some comments and subsequent corrections to a paper recently published in this Journal (see ibid., vol. 33, no. 1, pp. 111-119, Jan. 2015). More precisely, we show that the pdf for the κ-μ shadowed fading model ... -
Extreme eigenvalue distributions of Jacobi ensembles: new exact representations, asymptotics and finite size corrections
Moreno-Pozas, Laureano; Morales-Jiménez, David; Mckay, Matthew R. (Elsevier, 2019-10)
Let W1 and W2 be independent complex central Wishart matrices with m1 and m2 degrees of freedom respectively. This paper is concerned with the extreme eigenvalue distributions of double-Wishart matrices (W1+W2)^-1 W1, which ... -
Frequency locked loop architecture for phase noise reduction in wideband low-noise microwave oscillators.
Ávila Ruiz, Juan Manuel; Moreno-Pozas, Laureano; Durán Valdeiglesias, Elena; Moscoso Mártir, Álvaro; Molina-Fernández, Íñigo
; De-Oliva-Rubio, José
[et al.] (Wiley, 2013)
A frequency locked loop (FLL) for phase noise reduction of wideband voltage controlled oscillators is proposed. The key building block of the system is a low noise (−160 dBV/Hz) and high sensitivity (22 V/GHz) delay line ... -
Joint Parameter Estimation for the Two-Wave with Diffuse Power Fading Model.
López-Fernández, Jesús Manuel; Moreno-Pozas, Laureano; López-Martínez, Francisco Javier; Martos-Naya, Eduardo
(MDPI, 2016-06-30)
Wireless sensor networks deployed within metallic cavities are known to suffer from a very severe fading, even in strong line-of-sight propagation conditions. This behavior is well-captured by the Two-Wave with Diffuse ... -
Largest eigenvalue distribution of noncircularly symmetric Wishart-type matrices with application to Hoyt-faded MIMO communications
Moreno-Pozas, Laureano; Morales-Jimenez, David; Mckay, Matthew R.; Martos-Naya, Eduardo
(Institute of Electrical and Electronics Engineers, 2018-03)
This paper is concerned with the largest eigenvalue of the Wishart-type random matrix W = XX† (or W = X†X), where X is a complex Gaussian matrix with unequal variances in the real and imaginary parts of its entries, i.e., ... -
Novel Results for the κ–μ Extreme Fading Distribution: Generation of White Samples and Capacity Analysis
López-Martínez, Francisco Javier; Moreno-Pozas, Laureano; Martos-Naya, Eduardo
(IEEE Communications Letters, 2015-09)
We provide new analytical results for the κ-μ extreme (κ-μ-E) fading distribution, which is useful to model propagation conditions more severe than Rayleigh fading. First, we calculate a closed-form expression for the ... -
On Some Unifications Arising from the MIMO Rician Shadowed Model
Moreno-Pozas, Laureano; Martos-Naya, Eduardo
(IEEE, 2016)
This paper shows that the proposed Rician shadowed model for multi-antenna communications allows for the unification of a wide set of models, both for multiple-input multiple-output (MIMO) and single- input single-output ... -
On the connection between noncircularly-symmetric and noncentral fading models: univariate and multivariate analysis
Moreno-Pozas, Laureano(UMA Editorial, 2017-06-01)
This thesis provides new statistical connections between noncircularly-symmetric central and circularly-symmetric noncentral underlying complex Gaussian models. This is particularly interesting since it facilitates the ... -
Six-Port-Based Architecture for Phase NoiseMeasurement in the UWB Band
Ávila Ruiz, Juan Manuel; Moscoso Mártir, Álvaro; Durán Valdeiglesias, Elena; Moreno-Pozas, Laureano; De-Oliva-Rubio, José
; Molina-Fernández, Íñigo
[et al.] (Hindawi Publishing Corporation, 2014-06)
A six-port-based frequency discriminator for phase noise measurement is proposed. This circuit makes use of a delay line discriminator configuration, thus not requiring reference oscillator. Furthermore, the use of a ... -
The κ–μ Shadowed Fading Model: Unifying the κ–μ and η–μ Distributions
Moreno-Pozas, Laureano; López-Martínez, Francisco Javier; París-Ángel, José Francisco
; Martos-Naya, Eduardo
(IEEE Transactions on Vehicular Technology, 2016-12)
This paper shows that the recently proposed k-μ shadowed fading model includes, besides the k-μ model, the η-μ fading model as a particular case. This has important relevance in practice, as it allows for the unification ... -
A Tractable Line-of-Sight Product Channel Model: Application to Wireless Powered Communications
López-Martínez, Francisco Javier; Moreno-Pozas, Laureano; Fernández-Plazaola, Unai
; París-Ángel, José Francisco
; Martos-Naya, Eduardo
; Romero-Jerez, Juan Manuel
[et al.] (2018-07-30)
We here present a general and tractable fading model for line-of-sight (LOS) scenarios, which is based on the product of two independent and non-identically distributed κ- μ shadowed random variables. Simple closed-form ... -
Ultra-Wideband VCO Phase-Noise Reduction Loop Based on a Six-Port Phase-Shifterless Delay-Line Discriminator.
Ávila Ruiz, Juan Manuel; Molina-Fernández, Íñigo; Moreno-Pozas, Laureano
; Moscoso Mártir, Álvaro (IEEE Transactions on Microwave Theory and Techniques, 2014-11-14)
In this paper, a novel frequency-locked loop (FLL) architecture for phase-noise reduction of wideband voltage-controlled oscillators (VCO) is presented. The circuit makes use of a phase-shifterless frequency discriminator, ...