NDLI: Fast selection of time-interleaved samples for wireless healthcare monitoring with pulse radar

Content Provider	IEEE Xplore Digital Library
Author	Cheng-Hao Hong Hsiao-Husan Shen Huan-Chung Wu Husan Shen Chiao-Wen Cheng Ta-Shun Chu Jen-Ming Wu
Copyright Year	2012
Description	Author affiliation: Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan (Cheng-Hao Hong; Hsiao-Husan Shen; Huan-Chung Wu; Husan Shen; Chiao-Wen Cheng; Ta-Shun Chu; Jen-Ming Wu)
Abstract	In this paper, we exploit using ultra-wide band(UWB) pulse radar for non-contact healthcare monitoring such as respiration or heartbeats rates. The transmitter sends periodic Gaussian pulses towards the person under monitoring. The pulses arrive at the person and reflect back to the receiver. The receiver samples the reflected signal in RF domain directly by time-interleaved sampling. The 16 time-interleaved analog-to-digital converters (ADC) lead to equivalent sampling rate of 20-GSamples/s. The respiration and heartbeats information are captured in the reflected signal and processed by the system. We have developed a successive interference cancelation algorithm at the receiver to post-process the signals and extract the respiration rate and the heartbeats rate successively. Furthermore, instead of taking all the received samples, a low complexity scheme is developed to select from the 16 interleaved ADC subchannels. We find that only a subset of the 16 interleaved samples are sufficient to maximize the signal-to-noise ratio. Also,the proposed scheme does not require prior knowledge of the pulse waveform. The performance evaluation based on the mean square error (MSE) of estimated heartbeats rate is also presented.
Sponsorship	Circuits & Syst. Soc.
Starting Page	45
Ending Page	48
File Size	474141
Page Count	4
File Format	PDF
ISBN	9781467322911
e-ISBN	9781467322935
e-ISBN	9781467322928
DOI	10.1109/BioCAS.2012.6418473
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-11-28
Publisher Place	Taiwan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Heart beat Receivers Radar Clutter Monitoring Signal to noise ratio
Content Type	Text
Resource Type	Article

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