Harmonic Analysis
Excesses of Gabor Frames
(joint with P.Casazza, C.Heil, Z.Landau) ps file
in Appl. and Comp. Harm. Anal. 2003
Deficits and Excesses of Frames
(joint with P.Casazza, C.Heil, Z. Landau)
ps file in special issues on frames of Advances and Computational Mathematics,
Dec. 2002
Optimal Stochastic Approximations and Encoding Schemes using Weyl-Heisenberg
Sets
(joint with I.Daubechies) ps file
chapter in "Gabor Analysis: Theory and Applications", Eds. H.Feichtinger and
T.Strohmer, Birkhauser 2002.
Topological Obstructions to Localization Results
ps file
in Wavelets Applications in Signal and Image Processing VIII, vol. , (2001)
Density and Redundancy of the Noncoherent Weyl-Heisenberg Superframes
ps file published in the Proceedings of the Special Session of the
Functional and Harmonic Analysis of Wavelets and Frames, AMS-MAA Meeting, San Antonio 1999,
Contemporary Mathematics, AMS Providence R.I. (1999)
Equivalence Relations and Distances between Hilbert Frames
ps file published in the Proc. AMS, vol.127 no.8, (1999) 2353-2366.
Extensions of No-Go Theorems to Many Signal Systems
ps file published in Contemporary Mathematics
216, (Special Session on Wavelets, Multi-Wavelets and Applications, AMS-MAA
Meeting, San Diego 1997), AMS Providence R.I. , 1998 , 3-14
An Uncertainty Inequality for Wavelet Sets
ps file published in Applied and Computational
Harmonic Analysis, (5) no.1. (1998), 106-108
Stability Theorems for Fourier Frames and Wavelet Riesz Bases
ps file published in Journal of Fourier Analysis
and Applications, (3) no.5, (1997), 499-504
Equivalence Relations and Distances between Hilbert Frames
ps file - published in the Proceedings of the
AMS vol.127, no.8, (1999), 2353-2366
Signal Processing
Multichannel Voice Detection in Adverse Environments
(joint with J.Rosca, N.Fan, C.Beaugeant and V.Gilg)
ps file in Proceedings of EUSIPCO 2002,
Toulouse FRANCE, September 2002
Microphone Array Speech Enhancement by Bayesian Estimation of
Spectral Amplitude and Phase
(joint with J.Rosca)
in Proceedings of IEEE Sensor Array and Multichannel Signal Processing
Workshop, Rosslyn VA, Aug. 2002
Single- and Two-Channel Noise Reduction For Robust Speech Recognition in
Car
(joint with S.Aalburg, C.Beaugeant, S.Stan, T.Fingscheidt, and J.Rosca)
Word
document in Proceedings of ISCA Workshop, GERMANY, June 2002
Robustness of Parametric Source Demixing in Echoic Environments
(joint with S.Rickard and J.Rosca) ps file
in the Proceedings of the 3rd ICA and BSS Conference, San Diego, CA, December
2001
Real-Time Audio Source Separation by Delay and Attenuation Compensation in
the Time Domain
(joint with N.Fan and J.Rosca) ps file
in the Proceedings of the 3rd ICA and BSS Conference, San Diego, CA, December
2001
Real-Time Time-Frequency Based Blind Source Separation
(joint with S.Rickard and J.Rosca) ps file
the Proceedings of the 3rd ICA and BSS Conference, San Diego, CA, December 2001
Mobile Interaction with Remote Worlds: The Acoustic Periscope
(with J.Rosca, S.Sudarsky, D.Comaniciu)
pdf file in the Proceedings of IJCAI 2001.
Statistical Properties of STFT Ratios for Two Channel Systems and
Applications to Blind Source Separation
(with J.Rosca) ps file the Proceedings of
2nd ICA and BSS Conference 2000, Helsinki, FINLAND, June 2000
Multiplexing of Signals using Superframes
ps file
in Wavelets Applications in Signal and Image Processing VIII, vol.4119 , (2000)
118-129
The Analysis and Design of Windowed Fourier Frame based Multiple Description
Source Coding Schemes
(with I.Daubechies and V.Vaishampayan)
ps file in IEEE Trans.on IT, vol.46, no.7, (2000) 2491-2537
The Influence of Windowing on Time Delay Estimates
(with J.Rosca, S.Rickard and J.O'Ruanaidh) ps file
in the Proceedings of the CISS 2000, Princeton NJ, March 15-17 2000
3D Mesh Geometry Filtering Algorithms for Progressive Transmission
Schemes
(with Gabriel Taubin) ps file
Computer-Aided Design, vol.32, no.13, (2000) 825-846 in the Special Issue of
Jurnal of CAD on Multiresolution Geometric Models (2000)
AR processes and sources can be reconstructed from degenerate mixtures
(with A.Jourjine and J.Rosca) ps file in the Proceedings
of the First International Workshop on Independent Component
Analysis and Signal Separation, Aussois France, January 11-15 1999, 467-472.
addendum to the AR paper.
Differential Topology, Dynamical Systems, Control Theory
Distributions with Singularities: Punctual and Local Study
report (.ps file)
paper "A Note About Integrability of Distributions
with Singularities" (.ps file) published in Bollettino U.M.I. (7) 8-A (1994),
335-344
Codistributions with Singularities: Punctual and Local Study
An Extension of Barbashin-Krasovski-LaSalle Theorem (I)
An Extension of Barbashin-Krasovski-LaSalle Theorem (II)
Absolute Stability of Linear Systems
Absolute Stability Criteria for Nonlinear Affine Control Systems
(with Vlad Ionescu)
Homogeneous Polynomial Approximations of Nonlinear Control Systems
paper (.ps file) published in Revue Roumaine
de Science Techniques, serie Electrotechnique et Energetique, tome 39,
1994 no.4, 503-511
An On-Line Robust Stabilizer
(with Dorian Aur)
paper (.ps file) published in Journal in
Guidance, Control and Dynamics, vol.18, no.3, (1995) 642-644
Disturbance Decoupling Problem with Stability
On the Angular Momentum Conservation Law in Newtonian Field
paper (.ps file) (with Toma Manciu)
Horseshoe and Analytic Nonintegrability of a Spinless Axialsymmetric Rigid
Body in Central Newtonian Field
report (.ps file)
about the paper (title , abstract & errata)
published in Celestial Mechanics and Dynamics Astronomy vol. 63, (1995),
59-79