Tobias Dahl

Post-doc

Department of informatics

Group for Digital Signal and Image Processing

Phone: +47 22 85 24 40

e-mail: tobias {at address} ifi.uio.no

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Scientific Interests

• Inverse problems and regularization
• Digital Signal Processing, Mobile Communication systems, MIMO
• Blind Channel Estimation and Communication
• Speech processing, Equalization Deverberation
• Multivariate Data Analysis and Linear algebra

Publications

Journal papers:

• "Outlier and Group Detection in Sensory Panels using Hierarchical Cluster Analysis with the Procrustes Distance", T. Dahl and T. Næs, Food Quality and Preference 15,2004
• "Blind MIMO Eigenmode transmission based on the algebraic Power Method", T. Dahl, N. Christophersen and D. Gesbert – IEEE Transactions on Signal Processing September 2004.
• “A Bridge between Tucker-1 and Carrols Generalized Correlation Analysis”, T. Dahl and T. Næs, Vol 50, Issue 11, 20 July 2006, pp. 3086-3098
• “Intrinsic Subspace Convergence in TDD MIMO Communication”, T. Dahl, S.Silva, N. Christophersen, D. Gesbert, IEEE Transactions on Signal Processing, Vol. 55, Issue 6, June 2007, pp. 2676-2687.
• “Some New Tools for visualizing multivariate and multiway data”, T. Dahl, O. Tomic, T. Næs, to appear in preparation for Journal of Food Quality and Preference.

Dissertaions and Technical Reports:

• “Empirical Modelling of Human Motion", University of Oslo, MSc Thesis, 1998.
• “From Sensory Analysis to Mobile Communication Systems”, PhD Thesis, University of Oslo, 2002.
• “Some new methods for Blind Source Separation, Blind Equalization, Blind Channel Estimation and Independent Component Analysis”. Technical Report, Department of Informatics, June 2004.

Conference papers:

• "BIMA - Blind Iterative MIMO Algorithm", T. Dahl, N. Christophersen and D. Gesbert, ICASSP'02.
• “Identification of parallel MIMO channels in wireless communications using Power Iterations”, T. Dahl, N. Christophersen, D. Gesbert, Nordic Signal Processing Conference, Oct. 2002.
• “Blind Beamforming in Frequency Division Duplex MISO systems based on Time Reversal Mirrors”, T. Dahl and J.E. Kirkebø, SPAWC 2005
• “LocalICA – Independent Component Analysis for Sources with non-stationary Amplitudes”, T. Dahl, O.C. Lingjærde, T. Ekman, N. Christophersen, ISSPA’2005

• “Robust multisource tracking and speed detection using cross-correlograms”, G.H. Eriksen and T. Dahl, NORSIG 2005
• “Source Enhancement and Suppression with Binaural Head Related Impulse Response Functions”, NORSIG 2006, Proceedings of pp. 114-117, June 2006.
• “Blind Source Separation for Convolution Mixtures using Spatially resampled Observations”, J.-F. Synnevåg and T. Dahl, EUSIPCO’06

Presentations:

• “Three-way methods”, PhD dissertation, June 2002.
• “Outlier and group detection in sensory analysis”, T. Dahl, and T. Næs, Second annual ENBIS conference 2002: General statistical modelling session
• Proceedings: "Physiometrics" and "ProClusTrees", both topics presented at The Norwegian Chemometrics Conference, 1998 and 2000, respectively.
• Lecture: “Empircal modelling of human motion”, held at the Norwegian Sport University, and at the Norwegian Agricultural University, Department of Mathematics, both in 1997.
• “Some New Tools for visualizing multivariate and multiway data”, T. Dahl, O. Tomic, T. Næs, PANGBORN 2005 and SSC 2005

Others

• Presentation of Three-way methods (PhD defence, in Norwegian)