Sökning: "wavelets"

Visar resultat 1 - 5 av 42 avhandlingar innehållade ordet wavelets.

  1. 1. On wavelets for digital communication

    Författare :Anders Silander; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; wavelets; digital communication; modulation; digital communication;

    Sammanfattning : .... LÄS MER

  3. 2. Filtering and Wavelet Regression Methods with Application to Exercise ECG

    Författare :Stefan Peterson; Matematisk statistik; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; aktuariematematik; programmering; operationsanalys; Statistik; actuarial mathematics; programming; operations research; Statistics; Model Selection; Robust Estimation; Haar Wavelets; Wavelets; Time Series Analysis; Exercise ECG; Kalman Filter;

    Sammanfattning : The analysis of the recorded electrical activity of the heart during an exercise test is a valuable method for investigating a patient's circulatory and respiratory system. But the disturbances that occurr during a test often make it difficult to interpret the signal in order to detect changes evoked by the increased workload and related to for instance coronary artery diseases. LÄS MER

  4. 3. On the use of wavelets in unit root and cointegration tests

    Författare :Abdul Aziz Ali; Ghazi Shukur; Johan Lyhagen; Linnéuniversitetet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time series; Unit roots; Wavelets; Statistics Econometrics; Statistik;

    Sammanfattning : This thesis consists of four essays linked with the use of wavelet methodologies in unit root testing and in the estimation of the cointegrating parameters of bivariate models.In papers I and II, we examine the performance of some existing unit root tests in the presence of error distortions. LÄS MER

  5. 4. Wavelets and Local Regularity

    Författare :Patrik Andersson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : We treat a number of topics related to wavelets and the description of local regularity properties of functions. First we prove several different exact characterizations of pointwise Hölder spaces, and use these characterizations to improve a theorem by Jaffard on Hölder exponents. LÄS MER

  7. 5. Knock detection with wavelets

    Författare :Krister Boman; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : .... LÄS MER