Multitaper Estimation of the Coherence Spectrum in low SNR
(2014) 22nd European Signal Processing Conference - EUSIPCO 2014- 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.
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4588812
- author
- Brynolfsson, Johan LU and Sandsten, Maria LU
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- coherence, cross-spectrum, multitaper, sinusoids
- host publication
- European Signal Processing Conference
- pages
- 5 pages
- publisher
- EURASIP
- conference name
- 22nd European Signal Processing Conference - EUSIPCO 2014
- conference location
- Lissabon, Portugal
- conference dates
- 2014-09-01 - 2014-09-05
- external identifiers
-
- scopus:84911910128
- ISSN
- 2219-5491
- language
- English
- LU publication?
- yes
- id
- 94da1aae-178c-477c-9a42-7cdc6c07b431 (old id 4588812)
- alternative location
- http://www.eurasip.org/Proceedings/Eusipco/Eusipco2014/HTML/papers/1569925367.pdf
- date added to LUP
- 2016-04-01 15:03:27
- date last changed
- 2022-01-28 03:54:07
@inproceedings{94da1aae-178c-477c-9a42-7cdc6c07b431, 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.}}, author = {{Brynolfsson, Johan and Sandsten, Maria}}, booktitle = {{European Signal Processing Conference}}, issn = {{2219-5491}}, keywords = {{coherence; cross-spectrum; multitaper; sinusoids}}, language = {{eng}}, publisher = {{EURASIP}}, title = {{Multitaper Estimation of the Coherence Spectrum in low SNR}}, url = {{https://lup.lub.lu.se/search/files/4316552/4588817.pdf}}, year = {{2014}}, }