Sökning: "multi-component signals"

Hittade 5 avhandlingar innehållade orden multi-component signals.

  1. 1. High resolution time-frequency representations

    Detta är en avhandling från Lund University / Centre for Mathematical Sciences /LTH

    Författare :Isabella Reinhold; Lund University.; Lunds universitet.; Lund University.; Lund University.; Lunds universitet.; [2017]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; time-frequency analysis; non-stationary signals; multi-component signals; IF estimation; reassignment;

    Sammanfattning : Non-stationary signals are very common in nature, e.g. sound waves such as human speech, bird song and music. It is usually meaningful to describe a signal in terms of time and frequency. LÄS MER

  2. 2. Radio Channel Prediction Based on Parametric Modeling

    Detta är en avhandling från Lund University / Centre for Mathematical Sciences /LTH

    Författare :Ming Chen; [2007]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Wireless communications; channel prediction; GLRT; CRLB; NLLS; polynomial phase signal; Kalman filter; NILS.; sinusoidal modeling; channel modeling; MIMO;

    Sammanfattning : Long range channel prediction is a crucial technology for future wireless communications. The prediction of Rayleigh fading channels is studied in the frame of parametric modeling in this thesis.Suggested by the Jakes model for Rayleigh fading channels,deterministic sinusoidal models were adopted for long rangechannel prediction in early works. LÄS MER

  3. 3. Control of neuronal survival, migration and outgrowth by GDNF and its receptors

    Detta är en avhandling från Stockholm : Karolinska Institutet, Department of Neuroscience

    Författare :Maurice Perrinjaquet; Karolinska Institutet.; Karolinska Institutet.; [2010]
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES;

    Sammanfattning : Glial cell line-derived neurotrophic factor (GDNF) is the prototypical member of a family of growth factors that are indispensable in nervous system development and maintenance. GDNF signals by binding to a multi-component receptor complex comprised of the ligand-binding subunit GFRα1 and the signaling subunit RET or NCAM. LÄS MER

  4. 4. Estimation and Classification of Non-Stationary Processes : Applications in Time-Frequency Analysis

    Detta är en avhandling från Centre for Mathematical Sciences, Lund University

    Författare :Johan Brynolfsson; Lund University.; Lunds universitet.; Lund University.; Lund University.; Lunds universitet.; [2019-05-17]
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Time-Frequency Estimation; Parameter Estimation; Reassignment method; Non-Stationary Processes; Smooth spectral estimation; Neural Networks;

    Sammanfattning : This thesis deals with estimation and classification problems of non-stationary processes in a few special cases.In paper A and paper D we make strong assumptions about the observed signal, where a specific model is assumed and the parameters of the model are estimated. LÄS MER

  5. 5. On the way of making plants smell like moths - a synthetic biology approach

    Detta är en avhandling från Lund University, Faculty of Science, Department of Biology

    Författare :Bao-Jian Ding; Lund University.; Lunds universitet.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; moth pheromone; transcriptome; fatty acyl desaturase; fatty acyl reductase; acetyltransferase; chain shortening; chain elongation; heterologous expression; synthetic biology; plant expression;

    Sammanfattning : Moth caterpillars are major agricultural pests in many parts of the world. In general female moths attract male mates with their pheromone over long distance. Most of the described moth pheromones belong to the same class of chemical compounds, fatty acid derivatives that are produced de novo in the pheromone gland. LÄS MER