dc.contributor.author | Politis, Dimitris Nicolas | en |
dc.creator | Politis, Dimitris Nicolas | en |
dc.date.accessioned | 2019-12-02T10:37:51Z | |
dc.date.available | 2019-12-02T10:37:51Z | |
dc.date.issued | 2005 | |
dc.identifier.issn | 1070-9908 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/57514 | |
dc.description.abstract | The spectral estimation method based on the average of short, tapered periodograms is re-examined. The bias of such estimators is typically O(1/b2), where b is the length of the short blocks. Much of the current researeh on multitapering has been focusing on reducing the proportionality constant implicit in the term O(1/b2). In this letter, we show how-with the use of complex-valued tapers-the bias of the spectral estimator can be reduced by orders of magnitude becoming O(1/bp) for (possibly) high p. Expressions for the estimators' variance and MSE are presented with an aim toward optimal estimation. An automatic method of optimally choosing the block size b is given. Finally, the usage of multiple complex tapers is proposed in an effort to reduce sidelobe size and improve finite-sample performance. © 2005 IEEE. | en |
dc.source | IEEE Signal Processing Letters | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-23744483147&doi=10.1109%2fLSP.2005.849492&partnerID=40&md5=7cd019aa54817001696ea75dc5e87ddd | |
dc.subject | Mathematical models | en |
dc.subject | Estimation | en |
dc.subject | Optimization | en |
dc.subject | Approximation theory | en |
dc.subject | Bandwidth | en |
dc.subject | Signal processing | en |
dc.subject | Graph theory | en |
dc.subject | Spectrum analysis | en |
dc.subject | Harmonic analysis | en |
dc.subject | Periodograms | en |
dc.subject | Spectral estimator | en |
dc.subject | Bandwidth choice | en |
dc.subject | Bartlett estimator | en |
dc.subject | Flat-top lag windows | en |
dc.subject | Multitapering | en |
dc.subject | Power spectrum | en |
dc.title | Complex-valued tapers | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1109/LSP.2005.849492 | |
dc.description.volume | 12 | |
dc.description.issue | 7 | |
dc.description.startingpage | 512 | |
dc.description.endingpage | 515 | |
dc.author.faculty | Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Μαθηματικών και Στατιστικής / Department of Mathematics and Statistics | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :4</p> | en |
dc.source.abbreviation | IEEE Signal Process.Lett. | en |