Multi-frequency and Multi-channel Bio-impedance Measurement Solution

Author

Martens, Olev ; Min, Mart ; Land, Raul ; Annus, Paul

Author_Institution

Inst. of Electron., Tallinn Univ. of Technol.

fYear

2006

fDate

38869

Firstpage

178

Lastpage

181

Abstract

A DSP-based solution for the 16-bit multi-frequency and multi-channel bio-impedance measurement unit, using of under-sampling discrete Fourier´ transform (DFT) has been proposed and realized. The unit has multiple outputs (8) and inputs (4), and operates at frequencies up to 5 MHz. Some performance matters of the proposed solution are discussed, mostly related to noise aliasing and accuracy depending on modulation signal frequency

Keywords

bioelectric phenomena; discrete Fourier transforms; electric impedance measurement; frequency modulation; medical signal processing; signal sampling; DSP-based solution; digital signal processor; discrete Fourier transform; multichannel bioimpedance measurement; multifrequency bioimpedance measurement; noise aliasing; signal frequency modulation; undersampling DFT; Bioimpedance; Digital signal processing; Discrete Fourier transforms; Frequency conversion; Frequency measurement; Frequency synthesizers; Sampling methods; Signal processing; Signal processing algorithms; Uniform resource locators;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing Symposium, 2006. NORSIG 2006. Proceedings of the 7th Nordic

Conference_Location

Rejkjavik

Print_ISBN

1-4244-0412-6

Electronic_ISBN

1-4244-0413-4

Type

conf

DOI

10.1109/NORSIG.2006.275222

Filename

4052217