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Code-Division-Multiplexed Electrical Impedance Tomography Spectroscopy
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DOI：10.1109/TBCAS.2009.2032159.png)
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Electrical impedance tomography uses multiple impedance measurements to image the internal conductivity of an object, such as the human body. Code-division multiplexing is proposed as a new method that can provide simultaneous impedance measurements of the multiple channels. Code division provides clear advantages of a wide frequency range at reduced cost and reduced complexity of sources. A potential drawback is the lack of perfectly orthogonal code sets. This caused an increase of 0.62% in root-mean-square spectral error when two codes were used to record two impedance channels simultaneously on a low-pass filter network. The method described provides images and spectra which are equivalent to the conventional time-multiplexed method, with increases in frequency resolution and measurement speed which may be of benefit in some applications of electrical impedance tomography spectroscopy.
Keyword:
Bioimpedance
code-division multiplexing
electrical impedance tomography spectroscopy
pseudorandom codes
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5.2
论文数:
9.8K
被引数:
2.2W
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CROSS-CORRELATION PROPERTIES OF PSEUDORANDOM AND RELATED SEQUENCES.png)
PROCEEDINGS OF THE IEEE
PROCEEDINGS OF THE IEEEIF25.9
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