Summary
International Conference on Emerging Technologies for Communications
2021
Session Number:P2
Session:
Number:P2-20
A Study on Pre-Filter Design for Improving Accuracy in Heart rate Estimation from Horizontal Multi-direction Using Discrete Wavelet Transform with mm-Wave Radar
Ryosuke Koyanaka, Shunsuke Sato, Yaokun Hu, Takeshi Toda ,
pp.-
Publication Date:2021/12/1
Online ISSN:2188-5079
Summary:
We have been considering applying discrete wavelet transform (DWT) to heart rate estimation using 77 GHz band FMCW radar. Moreover, we have proposed using a high pass filter (HPF) in DWT pre-processing in order to reduce respiratory signal and its harmonics included in the DWT results. In this paper, we compared a detection accuracy and signal-to-noise ratio (SNR) improvement in the case of a High-pass Chebyshev Type Ⅱ and an elliptic HPF, respectively. The experimental result showed that the Chebyshev Type Ⅱ filter was more effective for back and left directions where body surface movements due to respiration are less than the front and right directions.