Bioimpedance Parameter Estimation using Fast Spectral Measurements and Regularizaton

Activity: Talk or presentationTalk or presentation at a conference


This work proposes an alternative framework for parametric bioimpedance estimation as a powerful tool to characterize biological media. We model the bioimpedance as an electrical network of parallel RC circuits, and transform the frequency-domain estimation problem into a time constant domain estimation problem by means of the distribution of relaxation times (DRT) method. The fredholm integral equation of the first kind is employed to pose the problem in a regularized least squares (RLS) form. We validate the proposed methodology by numeral simulations for a synthetic biological electrical circuit, by using a multisine signal in the frequency range of 1kHz to 853kHz and considering an error in the-art techniques for spectral bioimpedance analysis. We also illustrate its potentiality in terms of accurate spectral measurements and precise data interpretation, for further usage in biological applications.
Period9 Jul 201811 Jul 2018
Event title18th IFAC Symposium on System Identification: SYSID 2018
Event typeConference
LocationStockholm, Sweden
Degree of RecognitionInternational