Abstract
A pseudo coherence estimate using multitapers is presented. The estimate has better localization for sinusoids and is shown to have lower variance for disturbances compared to the usual coherence estimator. This makes it superior in terms of finding coherent frequencies between two sinusoidal signals; even when observed in low SNR. Different sets of multitapers are investigated and the weights of the final coherence estimate are adjusted for a low-biased estimate of a single sinusoid. The proposed method is more computationally efficient than data dependent methods, and does still give comparable results.
| Original language | English |
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| Title of host publication | European Signal Processing Conference |
| Publisher | EURASIP |
| Number of pages | 5 |
| Publication status | Published - 2014 |
| Event | 22nd European Signal Processing Conference - EUSIPCO 2014 - Lissabon, Portugal Duration: 2014 Sept 1 → 2014 Sept 5 Conference number: 22 |
Publication series
| Name | |
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| ISSN (Print) | 2219-5491 |
Conference
| Conference | 22nd European Signal Processing Conference - EUSIPCO 2014 |
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| Country/Territory | Portugal |
| City | Lissabon |
| Period | 2014/09/01 → 2014/09/05 |
Subject classification (UKÄ)
- Probability Theory and Statistics
Free keywords
- coherence
- cross-spectrum
- multitaper
- sinusoids