Title :
The Sub-Band decomposition of Fluctuated signals for the Estimation of Power Spectra
Author :
Zajacek, Jiri ; Grmela, Lubomir
Author_Institution :
Brno Univ. of Technol., Brno
Abstract :
The noise spectroscopy is used to determinate quality and reliability of semiconductor materials. We have used the means of time-frequency analysis for processing of long time duration stochastic signal. Tree-structured FIR filter bank implemented in a recursive way for octave dividing frequency band was designed as full parallel computational algorithm for power spectral density estimation. In the very low frequency area we will obtain high resolution and low level variance of PSD.
Keywords :
FIR filters; reliability; time-frequency analysis; fluctuated signals; noise spectroscopy; power spectra estimation; semiconductor materials; stochastic signal; subband decomposition; time-frequency analysis; tree-structured FIR filter bank; Finite impulse response filter; Frequency estimation; Materials reliability; Semiconductor device noise; Semiconductor device reliability; Semiconductor materials; Signal processing; Spectroscopy; Stochastic resonance; Time frequency analysis; 1/f noise; FIR; octave filter bank; power spectral density (PSD); recursive algorithm;
Conference_Titel :
Intelligent Signal Processing, 2007. WISP 2007. IEEE International Symposium on
Conference_Location :
Alcala de Henares
Print_ISBN :
978-1-4244-0829-0
Electronic_ISBN :
978-1-4244-0830-6
DOI :
10.1109/WISP.2007.4447530
