Zobrazeno 1 - 10
of 248
pro vyhledávání: '"Selva, J. P."'
Autor:
Selva, J.
This paper presents an efficient method for computing maximum likelihood (ML) direction of arrival (DOA) estimates assuming unknown sensor noise powers. The method combines efficient Alternate Projection (AP) procedures with Newton iterations. The ef
Externí odkaz:
http://arxiv.org/abs/2001.01935
Akademický článek
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Autor:
Selva, J.
In this paper, we present a wideband subspace estimation method that characterizes the signal subspace through its orthogonal projection matrix at each frequency. Fundamentally, the method models this projection matrix as a function of frequency that
Externí odkaz:
http://arxiv.org/abs/1706.08280
Autor:
Selva, J.
The so-called non-uniform FFT (NFFT) is a family of algorithms for efficiently computing the Fourier transform of finite-length signals, whenever the time or frequency grid is nonuniformly spaced. Following the usual classification, there exist five
Externí odkaz:
http://arxiv.org/abs/1604.06236
Akademický článek
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Autor:
Selva, J.
This paper presents a method to interpolate a periodic band-limited signal from its samples lying at nonuniform positions in a regular grid, which is based on the FFT and has the same complexity order as this last algorithm. This kind of interpolatio
Externí odkaz:
http://arxiv.org/abs/1408.3717
Autor:
Selva, J.
We present a channel spectral estimator for OFDM signals containing pilot carriers, assuming a known delay spread or a bound on this parameter. The estimator is based on modeling the channel's spectrum as a band-limited function, instead of as the di
Externí odkaz:
http://arxiv.org/abs/1403.1091
Autor:
Selva, J.
This paper presents an efficient method to compute the maximum likelihood (ML) estimation of the parameters of a complex 2-D sinusoidal, with the complexity order of the FFT. The method is based on an accurate barycentric formula for interpolating ba
Externí odkaz:
http://arxiv.org/abs/1104.3069
Autor:
Selva, J.
This correspondence presents an efficient method for reconstructing a band-limited signal in the discrete domain from its crossings with a sine wave. The method makes it possible to design A/D converters that only deliver the crossing timings, which
Externí odkaz:
http://arxiv.org/abs/1009.6053
Autor:
Selva, J.
This paper presents a regularized sampling method for multiband signals, that makes it possible to approach the Landau limit, while keeping the sensitivity to noise at a low level. The method is based on band-limited windowing, followed by trigonomet
Externí odkaz:
http://arxiv.org/abs/1003.2880