Robust whitening procedure in blind source separation context

A. Belouchrani, A. Cichocki

Research output: Contribution to journalArticlepeer-review

149 Citations (Scopus)


An efficient algorithm is presented for robust whitening in the presence of temporally uncorrelated additive noise that may be spatially correlated. This whitening is introduced as a pre-processing step in the blind source separation process. The robust whitening consists in the eigenvalue decomposition of a positive definite linear combination of a set a correlation matrices taken at nonzero lags. The coefficients of the linear combination are computed by a finite step global convergence algorithm. Some numerical simulations are provided to illustrate the effectiveness of the solution.

Original languageEnglish
Pages (from-to)2050-2051
Number of pages2
JournalElectronics Letters
Issue number24
Publication statusPublished - 23 Nov 2000
Externally publishedYes


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