Title :
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.
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;
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
DOI :
10.1109/NORSIG.2006.275222
