Sökning: "spectral analysis"

Visar resultat 36 - 40 av 325 uppsatser innehållade orden spectral analysis.

  1. 36. Optimization over nonnegative matrix polynomials

    Master-uppsats, Linköpings universitet/Institutionen för systemteknik

    Författare :Daniel Cederberg; [2023]
    Nyckelord :Proximal methods; nonnegative polynomials; Bregman proximal operator; Itakura-Saito distance; spectral estimation; functional connectivity analysis.;

    Sammanfattning : This thesis is concerned with convex optimization problems over matrix polynomials that are constrained to be positive semidefinite on the unit circle. Problems of this form appear in signal processing and can often be solved as semidefinite programs (SDPs). LÄS MER

  3. 37. Performance Analysis of STTC-Based MIMO Under Cognitive RadioScenarios

    Master-uppsats, Blekinge Tekniska Högskola/Institutionen för datavetenskap

    Författare :Sanjana Kankantee; Sai Praneeth Reddy Ganta; [2023]
    Nyckelord :Space-time trellis coding; MIMO; Cognitive radio; Performance; Bit error rate; Diversity; AWGN; Rayleigh fading; Detection; Spectrum.;

    Sammanfattning : This thesis presents a comprehensive investigation into improving wireless transmission rates and reliability through the implementation of Space Time Trellis Codes(STTC). The study focuses on enhancing the coding gain, diversity gain, and flexible transmission capabilities, which are crucial for Error-Correcting Codes (ECC)in wireless communications. LÄS MER

  4. 38. Quantification of the Performance of Algorithms for spectra Baseline Correction

    Master-uppsats, Lunds universitet/Fysiska institutionen; Lunds universitet/Beräkningsbiologi och biologisk fysik - Genomgår omorganisation

    Författare :Ruijue Huang; [2023]
    Nyckelord :Physics and Astronomy;

    Sammanfattning : Spectroscopy serves as a vital tool in both scientific research and industrial applications. In spectral analysis, baseline correction is important in order to be able to efficiently extract essential features. LÄS MER

  5. 39. Mesoscale precipitation systems in the Tibetan Plateau region as represented by global reanalysis, regional downscaling and satellite data between 2001 - 2016

    Master-uppsats, Göteborgs universitet/Institutionen för geovetenskaper

    Författare :Benjamin Holmberg; [2022-09-01]
    Nyckelord :Tibetan Plateau; monsoon; westerlies; mesoscale; convection; precipitation; climate modelling; global reanalysis; regional downscaling; spatial resolution; re-initialization; spectral nudging; convective parameterization;

    Sammanfattning : The Tibetan Plateau (TP) is one of the world’s most important water towers. Convective precipitation systems play an important role by providing freshwater for the highly densely populated downstream regions, but they can also cause hazardous floods. LÄS MER

  7. 40. Identification of photodegradation products from commonenvironmental pollutants using gas chromatography coupled withhigh resolution mass spectrometry

    Kandidat-uppsats, Örebro universitet/Institutionen för naturvetenskap och teknik

    Författare :Vanessa Cajes; [2022]
    Nyckelord :Photodegradation; Organic contaminants; High resolution mass spectrometry; Identification; Spectral library;

    Sammanfattning : Photodegradation is a major degradation mechanism for many environmental contaminants, both in indoor environments as well as in outdoor environments, and many of the contaminants are persistent and toxic. However, there is a lack of knowledge about the exact degradation process for many of them. LÄS MER