A Fast Compressed Sensing Decoding Technique for Remote ECG Monitoring Systems

Abstract

Compressed Sensing (CS) has been proposed as a low-complexity ECG data compression scheme for wearable wireless bio-sensor devices. However, CS decoding is characterized by high computational complexity. As a result, it represents a burden to the computational and energy resources of the network gateway node, where decoding is performed. In this article, we propose a Fast Compressive Electrocardiography (FCE) technique to address this problem. CS decoding in FCE is based on Weighted Regularized Least-Squares (WRLS), rather than the standard approach based on 1 norm minimization. The WRLS formulation takes into account prior knowledge of ECG signal properties to estimate an optimally compact and accurate representation of ECG signals. Numerical results show that decoding by FCE is on average 33 times faster than the fastest tested CS-based ECG decoding technique. In addition, highquality ECG signal reconstruction by FCE is achieved at 32% higher compression ratio. Therefore, FCE can contribute to improving the overall energy and computational resource efficiency of CS-based remote ECG monitoring systems.INDEX TERMS Compressed sensing (CS), electrocardiogram (ECG), random demodulator, remote health monitoring, wireless body-sensor network (WBSN).

Application Value of Remote ECG Monitoring in Early Diagnosis of PCI for Acute Myocardial Infarction

“…Electrocardiography (ECG) placed an important role in healthcare applications because it is used to diagnose cardiovascular disease (CVD) [ 1 ]. The patient health status is continuously observed with the help of ECG monitoring [ 2 ]. Several literature analyses are frequently performed to improve the patient health status.…”