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Estimating and Time-Updating the 2-D Coherence Spectrum

Jakobsson, Andreas LU ; Alty, Stephen and Benesty, Jacob (2007) In IEEE Transactions on Signal Processing 55(5, part 2). p.2350-2354
Abstract
In this correspondence, we extend the recently introduced one-dimensional Capon-based Magnitude Square Coherence (MSC) spectral estimator, to form two-dimensional Capon- and Amplitude and Phase EStimation (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.
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
coherence spectrum, computational complexity, iterative methods, spectrum analysis, time varying systems, CAPON, APES
in
IEEE Transactions on Signal Processing
volume
55
issue
5, part 2
pages
2350 - 2354
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:34247846084
ISSN
1053-587X
DOI
10.1109/TSP.2007.892715
language
English
LU publication?
no
id
1ed01d88-6ffd-4e28-aacb-da07caa65bc7 (old id 1216168)
alternative location
http://ieeexplore.ieee.org/search/wrapper.jsp?arnumber=4156396
date added to LUP
2008-09-22 14:10:48
date last changed
2017-08-27 05:14:06
@article{1ed01d88-6ffd-4e28-aacb-da07caa65bc7,
  abstract     = {In this correspondence, we extend the recently introduced one-dimensional Capon-based Magnitude Square Coherence (MSC) spectral estimator, to form two-dimensional Capon- and Amplitude and Phase EStimation (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.},
  author       = {Jakobsson, Andreas and Alty, Stephen and Benesty, Jacob},
  issn         = {1053-587X},
  keyword      = {coherence spectrum,computational complexity,iterative methods,spectrum analysis,time varying systems,CAPON,APES},
  language     = {eng},
  number       = {5, part 2},
  pages        = {2350--2354},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Signal Processing},
  title        = {Estimating and Time-Updating the 2-D Coherence Spectrum},
  url          = {http://dx.doi.org/10.1109/TSP.2007.892715},
  volume       = {55},
  year         = {2007},
}