Sökning: "spectral estimation"

Visar resultat 36 - 40 av 147 avhandlingar innehållade orden spectral estimation.

  1. 36. Sparse Modeling of Grouped Line Spectra

    Författare :Ted Kronvall; Statistical Signal Processing Group; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; line spectra; parameter estimation; convex optimization; group-sparsity; block-sparsity; dictionary learning; ADMM; adaptive penalty; total variation; multi-pitch estimation; chroma; audio processing; TDOA; near-field localization; amplitude modulation;

    Sammanfattning : This licentiate thesis focuses on clustered parametric models for estimation of line spectra, when the spectral content of a signal source is assumed to exhibit some form of grouping. Different from previous parametric approaches, which generally require explicit knowledge of the model orders, this thesis exploits sparse modeling, where the orders are implicitly chosen. LÄS MER

  3. 37. Computational Study of Calmodulin’s Ca2+-dependent Conformational Ensembles

    Författare :Annie M. Westerlund; Erik Lindahl; Lucie Delemotte; Björn Wallner; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Molecular dynamics; Calmodulin; Free energy estimation; Gaussian mixture models; Spectral clustering; conformational selection; Biological Physics; Biologisk fysik;

    Sammanfattning : Ca2+ and calmodulin play important roles in many physiologically crucial pathways. The conformational landscape of calmodulin is intriguing. Conformational changes allow for binding target-proteins, while binding Ca2+ yields population shifts within the landscape. Thus, target-proteins become Ca2+-sensitive upon calmodulin binding. LÄS MER

  4. 38. Resolvent Estimates and Bounds on Eigenvalues for Schrödinger and Dirac Operators

    Författare :Alexandra Enblom; Vladimir Kozlov; Ari Laptev; David Krejcirik; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Spectral theory; Schrödinger operators; polyharmonic operators; Dirac operators; non-self-adjoint perturbations; complex potential; estimation of eigenvalues; Carleman inequalities; Hardy inequalities;

    Sammanfattning : This thesis concerns the spectral theory of Schrödinger and Dirac operators. The main results relate to the problems of estimating perturbed eigenvalues. The thesis is based on four papers.The first paper focuses on the problem of localization of perturbed eigenvalues for multidimensional Schrödinger operators. LÄS MER

  5. 39. On parameter estimation in wireless communications, sensor array processing and spectral analysis

    Författare :Martin Kristensson; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 40. Model inversion and spectral matching, methods for parameter estimation in grey-box models

    Författare :Ola Markusson; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER