A Low-Complexity Biosignal Recovery Algorithm using Compressed Sensing
and Independent Component Analysis
Abstract
The aim of this study is to propose a low-complexity algorithm that can
be used for the joint sparse recovery of biosignals. The framework of
the proposed algorithm supports real-time patient monitoring systems
that enhance the detection, tracking, and monitoring of vital signs via
wearable biosensors. Specifically, we address the problem of sparse
signal recovery and acquisition in wearable biosensor networks, where we
develop an efficient computational framework using compressed sensing
(CS) and independent component analysis (ICA) to reduce and eliminate
artifacts and interference in sparse biosignals. Our analysis and
examples indicate that the CS-ICA algorithm helps to develop low-cost,
low-power wearable biosensors while improving data quality and accuracy
for a given measurement. We also show that, under noisy measurement
conditions, the CS-ICA algorithm can outperform the standard CS method,
where a biosignal can be retrieved in only a few measurements. By
implementing the sensing framework, the error in reconstructing
biosignals is reduced, and a digital-to-analog converter operates at
low-speed and low-resolution