| Title | Estimating and Time-Updating the 2-D Coherence Spectrum |
| Authors | Andreas Jakobsson, Stephen Alty, Jacob Benesty |
| Full-text | Available as PDF, Restricted Access |
| Alternative Location | http://ieeexplore.ieee.org/..., Restricted Access |
| Alternative Location | http://dx.doi.org/10.1109/T... |
| Publication | IEEE Transactions on Signal Processing |
| Year | 2007 |
| Volume | 55 |
| Issue | 5, part 2 |
| Pages | 2350 - 2354 |
| Document type | Article |
| Status | Published |
| Quality controlled | Yes |
| Language | eng |
| Publisher | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS |
| Abstract English | 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. |
| Keywords | coherence spectrum, computational complexity, iterative methods, spectrum analysis, time varying systems, CAPON, APES, |
| ISBN/ISSN/Other | ISSN: 1053-587X |
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