Title :
Robust coherence spectrum estimation
Author :
Jakobsson, Andreas ; Butt, Naveed R.
Author_Institution :
Centre for Math. Sci., Lund Univ., Lund, Sweden
Abstract :
In this paper, we introduce robust versions of the recently introduced Capon- and APES-based magnitude square coherence (MSC) spectral estimators. The estimators exploit the related recent development on robust beamforming to allow for imperfect knowledge of the estimated sample correlation matrix. The resulting estimators are found to yield improved estimates as compared to the earlier estimators.
Keywords :
array signal processing; correlation methods; matrix algebra; spectral analysis; APES-based magnitude square coherence; Capon-based magnitude square coherence; correlation matrix; robust beamforming; robust coherence spectrum estimation; Array signal processing; Councils; Filter bank; Numerical simulation; Robustness; Sampling methods; Spectral analysis; Uncertainty; Yield estimation;
Conference_Titel :
Digital Signal Processing, 2009 16th International Conference on
Conference_Location :
Santorini-Hellas
Print_ISBN :
978-1-4244-3297-4
Electronic_ISBN :
978-1-4244-3298-1
DOI :
10.1109/ICDSP.2009.5201246
