Sökning: "frequency estimation"

Visar resultat 6 - 10 av 375 avhandlingar innehållade orden frequency estimation.

  1. 6. Time series modelling of high frequency stock transaction data

    Författare :Shahiduzzaman Quoreshi; Kurt Brännäs; Per Johansson; Umeå universitet; []
    Nyckelord :Economics; Count data; Intra-day; High frequency; Time series; Estimation; Long memory; Finance; Nationalekonomi; Econometrics; ekonometri;

    Sammanfattning : .... LÄS MER

  3. 7. Selected topics in frequency estimation

    Författare :Tomas Andersson; KTH; []
    Nyckelord :;

    Sammanfattning : Frequency estimation has been studied for a number of years.One reason for this is that the problem is easy to understand,but difficult to solve. Another reason, for sure, is the largenumber of applications that involves frequency estimation, e. LÄS MER

  4. 8. Frequency Tracking for Speed Estimation

    Författare :Martin Lindfors; Rickard Karlsson; Gustaf Hendeby; Fredrik Gustafsson; Tomas McKelvey; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Estimating the frequency of a periodic signal, or tracking the time-varying frequency of an almost periodic signal, is an important problem that is well studied in literature. This thesis focuses on two subproblems where contributions can be made to the existing theory: frequency tracking methods and measurements containing outliers. LÄS MER

  5. 9. Parameter Estimation - in sparsity we trust

    Författare :Johan Swärd; Statistical Signal Processing Group; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Parameter estimation; Sparse models; Convex optimization; Symbolic Periodicity; Alternating direction method of multipliers ADMM ; Covariance fitting; multi-pitch estimation problem; Off-grid estimation; Dictionary learning; Atomic norm; Sampling schemes;

    Sammanfattning : This thesis is based on nine papers, all concerned with parameter estimation. The thesis aims at solving problems related to real-world applications such as spectroscopy, DNA sequencing, and audio processing, using sparse modeling heuristics. LÄS MER

  7. 10. Contributions to Frequency Offset and Time Delay Estimation

    Författare :Mattias Olsson; Håkan Johansson; Jonny Holmberg; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; time delay estimation; OFDM; carrier frequency offset; Signal processing; Signalbehandling;

    Sammanfattning : The demand for reliable high rate and efficient communication is ever increasing. In this thesis we look at two different problems in such systems, and their possible solutions. LÄS MER