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Using the Continuous Spectrum to “Feel” Integrability: the Effect of Boundary Conditions
Test model integrability partial differential differential difference equations of continuous spectrum
2014/12/29
The scope of this work is to propose a method for testing the integrability of a model partial differential (PDE) and/or differential difference equation (DDE). For monoparametric families of PDE/DDE’...
The Scale Invariant Wigner Spectrum Estimation of Gaussian Locally Self-Similar Processes
Locally self-similar circularly symmetric Gaussian processes scale invariant Wigner spectrum (SIWS) optimal estimation time-frequency analysis
2012/9/19
We study locally self-similar processes (LSSPs) in Silverman’s sense. By deriving the minimum mean-square optimal kernel within Cohen’s class counterpart of time-frequency representations, we obtain a...
A perturbative approach to the reconstruction of the eigenvalue spectrum of a normal covariance matrix from a spherically truncated counterpart
A perturbative approach the reconstruction the eigenvalue spectrum a normal covariance matrix a spherically truncated counterpart
2012/9/18
In this paper we propose a perturbative method for the reconstruction of the covariance matrix of a multinormal distribution, under the assumption that the only available information amounts to the co...
Evolution of the CMB Power Spectrum Across WMAP Data Releases: A Nonparametric Analysis
Cosmic microwave background (CMB) angular power spectrum
2011/7/19
We present a comparative analysis of the WMAP 1-, 3-, 5-, and 7-year data releases for the CMB angular power spectrum, with respect to the following three key questions: (a) How well is the angular po...
Censored Truncated Sequential Spectrum Sensing for Cognitive Radio Networks
Censored Truncated Sequential Spectrum Sensing Cognitive Radio Networks
2011/7/6
Reliable spectrum sensing is a key functionality of a cognitive radio network. Cooperative spectrum sensing improves the detection reliability of a cognitive radio system but also increases the system...
Cooperative spectrum sensing over unreliable reporting channel
cognitive radio cooperation spectrum sensing data fusion
2011/7/6
This article aims to analyze a cooperative spectrum sensing scheme using a centralized approach with unreliable reporting channel. The spectrum sensing is applied to a cognitive radio system, where ea...
Properties of neutrality tests based on allele frequency spectrum
Coalescent theory Site frequency spectrum Population genetics Statistical power Summary statistics
2010/11/9
One of the main necessities for population geneticists is the availability of statistical tools that enable to accept or reject the neutral Wright-Fisher model with high power.
A Novel Algorithm for Cooperative Distributed Sequential Spectrum Sensing in Cognitive Radio
Cognitive Radio Spectrum Sensing Cooperative
2010/10/19
This paper considers cooperative spectrum sensing in Cognitive Radios. In our previous work we have developed DualSPRT, a distributed algorithm for cooperative spectrum sensing using Sequential Probab...
Cooperative Distributed Sequential Spectrum Sensing
Cognitive Radio Spectrum Sensing Cooperative
2010/10/19
We consider cooperative spectrum sensing for cognitive radios. We develop an energy efficient detector with low detection delay using sequential hypothesis testing. Sequential Probability Ratio Test (...
Group-Lasso on Splines for Spectrum Cartography
Sparsity, splines (group-)Lasso field estimation cognitive radio sensing
2010/10/14
The unceasing demand for continuous situational awareness calls for innovative and large-scale signal processing algorithms, complemented by collaborative and adaptive sensing platforms to accomplish...
The spectrum of kernel random matrices
spectrum kernel random matrices high-dimensional statisticalinference
2010/3/9
We place ourselves in the setting of high-dimensional statistical
inference where the number of variables p in a dataset of interest is
of the same order of magnitude as the number of observations n...
Distance and Face-to-Face Courses on Spectrum Management, Delivered in Latin America
Distance and Face-to-Face Courses Spectrum Management Latin America
2009/10/19
As a follow-up to these two events and with a view to dealing with some aspects of spectrum management in greater depth, ITU organized a face-to-face "Advanced Seminar on Spectrum Management", in Lima...
The paper deals with the study of a family of spectrum
trimming operations. In terms of thed operations a characterization of
the Pruitt classes of limit laws is established.
Gaussian semiparametric estimation for random fields with singular spectrum
Discrete Fourier transforms random fields singular spectrum Whittle semiparametric estimates
2009/9/21
We analyze the asymptotic behaviour of the tapered
discrete Fourier transforms far random fields with singular spectrum.
The results are used to establish consistency and asymptotic normality
for s...
Timescale effect estimation in time-series studies of air pollution and health: A Singular Spectrum Analysis approach
Airborne particulate matter PM10 Singular Spectrum Analysis - SSA Generalized additive models - GAM
2009/9/16
A wealth of epidemiological data suggests an association between mortality/morbidity from pulmonary and cardiovascular adverse events and air pollution, but uncertainty remains as to the extent implie...