DocumentCode :
3137628
Title :
Efficient Computation of the LF/HF Ratio in Heart Rate Variability Analysis Based on Bitstream Filtering
Author :
Ho, Mel M.S. ; Lande, Tor S. ; Toumazou, Christopher
Author_Institution :
Imperial Coll. London, London
fYear :
2007
fDate :
27-30 Nov. 2007
Firstpage :
17
Lastpage :
20
Abstract :
This paper describes a novel approach to hardware efficient computing of the LF/HF ratio as required in heart rate variability (HRV) analysis. Heart rate data are converted into a bit stream vie delta-sigma modulation. The bit stream is filtered in the LF and HF sub-bands using novel hardware architecture. Sub-band spectral content is estimated from the filtered signals. The proposed algorithm and hardware architecture is extremely efficient, making continuous real-time HRV analysis possible in low-power microelectronics.
Keywords :
biomedical electronics; biomedical measurement; cardiovascular system; convolution; delta-sigma modulation; medical signal processing; patient monitoring; signal sampling; LF-HF ratio; bitstream filtering; delta-sigma modulation; hardware architecture; heart rate variability analysis; low-power microelectronics; real-time HRV analysis; real-time cardiac monitoring; signal filtering; sub-band spectral content; Convolution; Filtering; Finite impulse response filter; Frequency; Hafnium; Hardware; Heart rate; Heart rate variability; Noise shaping; Quantization; Bitstream convolution; bitstream filtering; heart rate variability; real-time cardiac monitoring;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Biomedical Circuits and Systems Conference, 2007. BIOCAS 2007. IEEE
Conference_Location :
Montreal, Que.
Print_ISBN :
978-1-4244-1524-3
Electronic_ISBN :
978-1-4244-1525-0
Type :
conf
DOI :
10.1109/BIOCAS.2007.4463298
Filename :
4463298
Link To Document :
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