Priori-block sparse Bayesian learning algorithm for compressed sensing based ECG recovery

Kan Luo, Jianqing Li (Lead / Corresponding author), Zhiqang Wang, Zhipeng Cai

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Compressed sensing (CS) has advantages in low-cost, low-power and long term wireless electorcardiogram(ECG) applications. However, there are some problems in existing reconstruction algorithms, which include the unsatisfied signal quality, huge computation task and no-adaptive to noise. To accurately reconstruct the non-sparse ECG signal, a priori block sparse Bayesian learning (P-BSBL) algorithm is proposed in this paper. Based on the block sparse Bayesian learning, the P-BSBL introduces priori of ECG signals to enhance the performance of the algorithm, which adopts the " nearby" zero solution space as the initial values and the signal statistical characteristic as the stop condition. The numerical experiments on MIT-BIH ECG database were conducted to verify the algorithm. The results show that the proposed method can efficiently reconstruct the non-sparse ECG signal with high signal quality. The P-BSBL has better performance compared with the convex optimization and greed methods; and it is more suitable for the ECG signal reconstruction with high data compression ratio and variable signal-to-noise ratio.
    Original languageEnglish
    Pages (from-to)1883-1889
    Number of pages7
    JournalYi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument
    Volume35
    Issue number8
    Publication statusPublished - Aug 2014

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