The electrocardiogram(ECG) is decomposed on the single value decomposition(SVD) into two time orthogonalsubspaces, one containing ECG and the other containing artifacts.
ECG经奇异值正交分解后，将信号分解到信号空间和噪声空间中。
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Besides, the author gives the necessary and sufficient conditions for the two generating subspaces to be orthogonal complement spaces in a unitary space and certain corollaries.