Segmentation of compound signals using higher-order activity indexes /
The so called activity index is defined on the secondorder statistics. In multiple-input multiple-output (MIMO) models, it estimates the level of activity of individual input sources. In this paper, we study an extended definition of activity index, which deploys higher-order statistics instead of t...
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| Main Authors: | , |
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| Format: | Book Chapter |
| Jezik: | English |
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| Sorodne knjige/članki: | Vsebovano v:
International journal of circuits, systems and signal processing |
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| LEADER | 01830naa a2200229 ib4500 | ||
|---|---|---|---|
| 001 | 14448918 | ||
| 003 | SI-MaCOB | ||
| 005 | 20101011000000.0 | ||
| 008 | 101011s2010 gr |||||||||||||| ||eng c | ||
| 040 | |a KTFMB |b slv |c SI-MaIIZ |e ppiak | ||
| 041 | 0 | |a eng |b eng | |
| 080 | |a 004.92 | ||
| 100 | 1 | |a Zazula, Damjan. |4 aut | |
| 245 | 0 | 0 | |a Segmentation of compound signals using higher-order activity indexes / |c Damjan Zazula, Rok Istenič. |
| 300 | |a str. 120-128. | ||
| 504 | |a Abstract. | ||
| 504 | |a Bibliografija: str. 128. | ||
| 520 | |a The so called activity index is defined on the secondorder statistics. In multiple-input multiple-output (MIMO) models, it estimates the level of activity of individual input sources. In this paper, we study an extended definition of activity index, which deploys higher-order statistics instead of the second-order. Experiments with synthetic models show that noise resistance at higher even orders increases. In spite of the fact that the level of superimpositions of source activity also increases, which is disturbing, a difference of the 4th- and 2nd-order activity indexes proves to be a reliable relative measure of the number of simultaneously active input sources. The measure is not influenced either by the properties of sources, orby the level of additive random Gaussian noise, or the over- or under determinancy of the model output observations. This can be of considerable help when analysing and, in particular, decomposing compound MIMO output signals. | ||
| 653 | 0 | |a MIMO modeli |a signali | |
| 653 | 0 | |a activity index |a compound signal segmentation |a higher-order moments |a MIMO models |a sparcse signal sources | |
| 700 | 1 | 2 | |a Istenič, Rok. |4 aut |
| 773 | 0 | |t International journal of circuits, systems and signal processing |d Athens : WSEAS, 2007- |x 1998-4464 |g Vol. 4, iss. 3 (2010), str. 120-128 | |