Pregled bibliografske jedinice broj: 844772
Optimization of quadratic time–frequency distributions using the local Rényi entropy information
Optimization of quadratic time–frequency distributions using the local Rényi entropy information // Signal Processing - An International Journal, 129 (2016), 17-24 doi:10.1016/j.sigpro.2016.05.025 (međunarodna recenzija, članak, znanstveni)
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Naslov
Optimization of quadratic time–frequency distributions using the local Rényi entropy information
Autori
Saulig, Nicoletta ; Orović, Irena ; Sučić, Viktor
Izvornik
Signal Processing - An International Journal (0165-1684) 129
(2016);
17-24
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
Rényi entropy; Quadratic time-frequency distributions; S-method; optimization
Sažetak
This paper presents two TFD optimization schemes, extending an optimization method so far limited to the spectrogram. The first method is focused on the enhancement of the spectrogram concentration, by an adaptive realization of the S-method TFD which prevents cross-terms generation. The second approach, a generalization of the first one to the Quadratic class of TFDs, operates on a set of TFDs with different kernel parameters, selecting for each time instant the best performing one. Both methods use an entropy- based criterion for concentration enhancement, and a here-proposed method for the detection of cross-terms. The combination of the two criteria allows us to generate optimal TFDs, i.e. TFDs with highly concentrated components, but at the same time avoiding the appearance of undesirable cross-terms in the resulting TFD.
Izvorni jezik
Engleski
Znanstvena područja
Elektrotehnika, Računarstvo
POVEZANOST RADA
Ustanove:
Tehnički fakultet, Rijeka
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
