| 11. |
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| 12. |
- Jansson, M, et al.
(författare)
-
Forward-only and forward-backward sample covariances - A comparative study
- 1999
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 77:3, s. 235-245
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- In some applications the covariance matrix of the observations enjoys a particular symmetry: it is not only symmetric with respect to its main diagonal but also with respect to the anti-diagonal. The standard forward-only sample covariance estimate does n
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| 13. |
- Stoica, P, et al.
(författare)
-
Matched-filter bank interpretation of some spectral estimators
- 1998
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 66:1, s. 45-59
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We make use of a matched-filter bank (MAFI) approach to derive spectral estimators for stationary signals with mixed spectra, We show that the Capon spectral estimator as well as the more recently introduced APES (amplitude and phase estimation) method ar
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| 14. |
- STOICA, P, et al.
(författare)
-
MUSIC ESTIMATION OF REAL-VALUED SINE-WAVE FREQUENCIES
- 1995
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 42:2, s. 139-146
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The main focus of this paper is on the estimation of the frequencies of real-valued sinusoidal signals by using the MUSIC methodology. The MUSIC problem associated with real-valued sine waves turns out to be more intricate than the similar problem corresp
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| 15. |
- Stoica, P, et al.
(författare)
-
On the identifiability of multipath parameters
- 1999
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 74:3, s. 327-330
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Consider a received signal consisting of noise and an unknown waveform that arrives at a sensor through both a direct path and an attenuated and delayed specular path. We show that a commonly used frequency-domain model for such a signal is valid essentia
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| 16. |
- Stoica, P, et al.
(författare)
-
On the inconsistency of IQML
- 1997
-
Ingår i: SIGNAL PROCESSING. - 0165-1684. ; 56:2, s. 185-190
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The IQML (iterative quadratic maximum likelihood) algorithm is a popular iterative algorithm used in temporal and spatial frequency estimation problems to approximate the global minimizer of the deterministic maximum likelihood criterion. In this paper, w
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| 17. |
- STOICA, P, et al.
(författare)
-
ON THE RESOLUTION PERFORMANCE OF SPECTRAL-ANALYSIS
- 1995
-
Ingår i: SIGNAL PROCESSING. - 0165-1684. ; 44:2, s. 153-161
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The main focus of this paper is on the resolution performance that can be achieved by spectral analysis at and beyond the Fourier limit. A simple heuristical expression is derived for the resolution threshold signal-to-noise ratio (SNR), i.e. the SNR abov
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| 18. |
- Stoica, P, et al.
(författare)
-
Optimally smoothed periodogram
- 1999
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 78:3, s. 253-264
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- Locally smoothing the periodogram yields one of the most successful methods for non-parametric spectral estimation. Nevertheless, no much guideline was available for choosing the window parameters and span for smoothing. Here we derive the window paramete
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| 19. |
- Stoica, P, et al.
(författare)
-
Subspace-based frequency estimation in the presence of moving-average noise using decimation
- 1997
-
Ingår i: SIGNAL PROCESSING. - 0165-1684. ; 63:3, s. 211-220
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- The problem of estimating the frequencies of complex sinusoids contaminated by correlated noise, using subspace-based methods and data-decimation, is considered. In order to increase the accuracy of the estimates a method is proposed where all the availab
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| 20. |
- Stoica, P, et al.
(författare)
-
The evil of superefficiency
- 1996
-
Ingår i: SIGNAL PROCESSING. - : ELSEVIER SCIENCE BV. - 0165-1684. ; 55:1, s. 133-136
-
Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)abstract
- We discuss the intriguing notion of statistical superefficiency in a straightforward manner with a minimum of formality. We point out that for any given parameter estimator there exist other estimators which have a strictly lower asymptotic variance and h
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