title: Design of wavelet-based ECG detector for implantable cardiac pacemakers.
abstract: A wavelet Electrocardiogram (ECG) detector for low-power implantable cardiac pacemakers is presented in this paper. The proposed wavelet-based ECG detector consists of a wavelet decomposer with wavelet filter banks, a QRS complex detector of hypothesis testing with wavelet-demodulated ECG signals, and a noise detector with zero-crossing points. In order to achieve high detection accuracy with low power consumption, a multi-scaled product algorithm and soft-threshold algorithm are efficiently exploited in our ECG detector implementation. Our algorithmic and architectural level approaches have been implemented and fabricated in a standard 0.35 μm CMOS technology. The testchip including a low-power analog-to-digital converter (ADC) shows a low detection error-rate of 0.196% and low power consumption of 19.02 μW with a 3 V supply voltage.
authors.affiliation: School of Electrical Engineering, Korea University, Seoul 136-701, Korea. yjmin@asic.korea.ac.kr
authors.forename: Young-Jae
authors.initials: YJ
authors.lastname: Min
authors.forename: Hoon-Ki
authors.initials: HK
authors.lastname: Kim
authors.forename: Yu-Ri
authors.initials: YR
authors.lastname: Kang
authors.forename: Gil-Su
authors.initials: GS
authors.lastname: Kim
authors.forename: Jongsun
authors.initials: J
authors.lastname: Park
authors.forename: Soo-Won
authors.initials: SW
authors.lastname: Kim
mesh_terms: D000465:Algorithms; D000703:Analog-Digital Conversion; D004562:Electrocardiography / Q000295:instrumentation*; D004567:Electrodes, Implanted; D004867:Equipment Design; D006801:Humans; D010138:Pacemaker, Artificial; D012815:Signal Processing, Computer-Assisted; D058067:Wavelet Analysis