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Power-Efficient Cross-Correlation Beat Detection in Electrocardiogram Analysis Using Bitstreams
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DOI：10.1109/TBCAS.2010.2079933.png)
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In this paper, we present a novel cross-correlator chip suitable for smart ECG electrodes. Sophisticated QRS-detection is feasible exploring multicomponent-based cross-correlation and by exploiting the simplicity offered by bitstream processing. The chip is evaluated using real ECG signals as an example application. Power-efficient running cross correlation is obtained with novel asynchronous circuit solutions consuming approximately 730 mu W while processing ECG data sampled at a rate of 250 Hz. The implemented generic cross-correlator may be explored for other pattern-matching applications in wireless sensor networks or other low-power applications.
Keyword:
Biomedical computing
bitstream operations
complementary metal-oxide semiconductor (CMOS)
cross-correlation
sigma-delta modulation
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