Estimating the Two-Dimensional Coherence Function

Andreas Jakobsson, Stephen Alty, Jacob Benesty

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

Abstract

In this paper, we extend the one-dimensional Capon-based magnitude square coherence (MSC) spectral estimator, to form two-dimensional Capon- and APES-based MSC spectral estimators. The resulting estimators are found to yield significantly improved estimates as compared to the typical Welch-based estimator. Furthermore, we introduce a computationally efficient time-updating of the presented MSC estimators, exploiting their inherent time-varying displacement structure. The presented updating is found to dramatically lower the computational requirement of reevaluating the MSC spectral estimates
Original languageEnglish
Title of host publication2007 IEEE International Conference on Acoustics, Speech and Signal Processing - ICASSP '07
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
PagesIII-993-III-996
Volume3
Publication statusPublished - 2007
Externally publishedYes
EventIEEE International Conference on Acoustics, Speech and Signal Processing, 2007: ICASSP 2007 - Honolulu, Honolulu, United States
Duration: 2007 Apr 152007 Apr 20

Publication series

Name
Volume3
ISSN (Print)1520-6149

Conference

ConferenceIEEE International Conference on Acoustics, Speech and Signal Processing, 2007
Country/TerritoryUnited States
CityHonolulu
Period2007/04/152007/04/20

Subject classification (UKÄ)

  • Probability Theory and Statistics

Keywords

  • Welch-based estimator
  • computationally efficient time-updating
  • APES-based MSC spectral estimators
  • two-dimensional Capon-based MSC spectral estimators
  • time-varying displacement structure
  • two-dimensional coherence function estimation
  • one-dimensional Capon-based spectral estimator
  • magnitude square coherence spectral estimator

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