Toward an Embedded OFDM-based System for Living Cells Study by Electrochemical Impedance Spectroscopy
Résumé
The following article introduces a wireless an
portable system for Electrochemical Impedance Spectroscopy
(EIS) sensing based on the Orthogonal Frequency-Division
Modulation (OFDM). This technique is derived from multicarrier
digital communication methods and due to its
properties of flat spectrum, fast generation and low-foot print
memory, the OFDM technique for EIS seems to be a real
alternative to traditional ones. The manufacture of the OFDMEIS
system is under the framework of the electrical sensing of
fibrosis induced by medium to long-term active implants, given
that the detection of fibrous tissues surrounding the electrode,
that usually affect the operation of the implant, is an open
research problem. Because of this, this article defines its
performance on living cells under in-vitro experimentation
where the proliferation of cells are matched with the results.
Furthermore, traditional EIS techniques, such as frequency
sweep and multi-sine are compared to OFDM-EIS.