Comparison of Measures of Time-Frequency Distribution Optimization

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F16%3APU121159" target="_blank" >RIV/00216305:26220/16:PU121159 - isvavai.cz</a>

Výsledek na webu

<a href="https://ieeexplore.ieee.org/document/7765378" target="_blank" >https://ieeexplore.ieee.org/document/7765378</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICUMT.2016.7765378" target="_blank" >10.1109/ICUMT.2016.7765378</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of Measures of Time-Frequency Distribution Optimization

Popis výsledku v původním jazyce

This article describes the problems of time-frequency representation optimization. The goal is to achieve compromise between good resolution and reduced cross terms. The quantitative measures used for this optimization are described. For the case of a simulated signal a measure based on mean squared error is proposed. The proposed method compares an optimized result to the ideal representation obtained as sum of Wigner-Ville distributions of mono-component signals. Three simulated signals are used to compare optimization of Choi-Williams Distribution, Gabor spectrogram, Short-time Fourier transform and S-method. The optimization is realized on the basis of four quantitative measures: Rényi entropy, Jones-Parks measure, Stankovic measure and proposed method. Results show problematic use of Jones-Parks measure for optimization and comparable optimization of all tested time-frequency distributions by means of three usable measures. For practical use with real signal, S-method with Rényi or Stankovic measure is recommended.

Název v anglickém jazyce

Comparison of Measures of Time-Frequency Distribution Optimization

Popis výsledku anglicky

This article describes the problems of time-frequency representation optimization. The goal is to achieve compromise between good resolution and reduced cross terms. The quantitative measures used for this optimization are described. For the case of a simulated signal a measure based on mean squared error is proposed. The proposed method compares an optimized result to the ideal representation obtained as sum of Wigner-Ville distributions of mono-component signals. Three simulated signals are used to compare optimization of Choi-Williams Distribution, Gabor spectrogram, Short-time Fourier transform and S-method. The optimization is realized on the basis of four quantitative measures: Rényi entropy, Jones-Parks measure, Stankovic measure and proposed method. Results show problematic use of Jones-Parks measure for optimization and comparable optimization of all tested time-frequency distributions by means of three usable measures. For practical use with real signal, S-method with Rényi or Stankovic measure is recommended.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

<a href="/cs/project/LO1210" target="_blank" >LO1210: Energie v podmínkách udržitelného rozvoje (EN-PUR)</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

8th International Congress on Ultra Modern Telecommunications and Control Systems and Workshops - ICUMT

ISBN

978-1-4673-8817-7

ISSN

—

e-ISSN

—

Počet stran výsledku

6

Strana od-do

314-319

Název nakladatele

Neuveden

Místo vydání

Lisabon

Místo konání akce

Lisabon

Datum konání akce

18. 10. 2016

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000392263300056