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Sequential blind source separation based exclusively on second order statistics developed for a class of periodic signals
| Content Provider | CiteSeerX |
|---|---|
| Author | Jafari, Maria G. Wang, Wenwu Chambers, Jonathon A. Hoya, Tetsuya Cichocki, Rzej |
| Abstract | Abstract—A sequential algorithm for the blind separation of a class of periodic source signals is introduced in this paper. The algorithm is based only on second-order statistical information and exploits the assumption that the source signals have distinct periods. Separation is performed by sequentially converging to a solution which in effect diagonalizes the output covariance matrix constructed at a lag corresponding to the fundamental period of the source we select, the one with the smallest period. Simulation results for synthetic signals and real electrocardiogram recordings show that the proposed algorithm has the ability to restore statistical independence, and its performance is comparable to that of the equivariant adaptive source separation (EASI) algorithm, a benchmark high-order statistics-based sequential algorithm with similar computational complexity. The proposed algorithm is also shown to mitigate the limitation that the EASI algorithm can separate at most one Gaussian distributed source. Furthermore, the steady-state performance of the proposed algorithm is compared with that of EASI and the block-based second-order blind identification (SOBI) method. Index Terms—Blind source separation, fetal electrocardiogram extraction, periodic signals, second-order statistics. I. |
| File Format | |
| Journal | IEEE Trans. On Signal Processing |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Periodic Signal Sequential Blind Source Separation Second Order Statistic Second-order Statistic Sequential Algorithm Output Covariance Matrix Block-based Second-order Blind Identification Steady-state Performance Source Signal Second-order Statistical Information Statistical Independence Fundamental Period Fetal Electrocardiogram Extraction Equivariant Adaptive Source Separation Index Term Blind Source Separation Similar Computational Complexity Simulation Result Synthetic Signal Periodic Source Signal Benchmark High-order Statistics-based Sequential Algorithm Real Electrocardiogram Recording Easi Algorithm Blind Separation |
| Content Type | Text |
| Resource Type | Article |
