Title :
An effective heart rate variability processor design based on time-frequency analysis algorithm using windowed Lomb periodogram
Author :
Tseng, Shao-Yen ; Fang, Wai-Chi
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, a system for time-frequency analysis of heart rate variability (HRV) using a fast windowed Lomb periodogram is proposed. Time-frequency analysis of HRV is achieved through a de-normalized fast Lomb periodogram with a sliding window configuration. The Lomb time-frequency distribution (TFD) is suited for spectral analysis of unevenly spaced data and has been applied to the analysis of HRV. The system has been implemented in hardware as an HRV processor and verified on FPGA. Simulations show that the proposed Lomb TFD is able to achieve better frequency resolution than short-time Fourier transform of the same hardware size. The proposed system is suitable for portable monitoring devices and as a biomedical signal processor on an system-on-chip (SOC) design.
Keywords :
biomedical equipment; cardiology; fast Fourier transforms; field programmable gate arrays; medical signal processing; patient diagnosis; patient monitoring; spectral analysis; system-on-chip; time-frequency analysis; FPGA; SOC design; biomedical signal processor; heart rate variability processor design; portable monitoring device; short-time Fourier transform; signal amplitude squaring function; spectral analysis; system-on-chip design; time-frequency analysis algorithm; windowed Lomb periodogram; Algorithm design and analysis; Hardware; Heart rate variability; Spectral analysis; System-on-a-chip; Time frequency analysis;
Conference_Titel :
Biomedical Circuits and Systems Conference (BioCAS), 2010 IEEE
Conference_Location :
Paphos
Print_ISBN :
978-1-4244-7269-7
Electronic_ISBN :
978-1-4244-7268-0
DOI :
10.1109/BIOCAS.2010.5709576
