[1] Cent Taiwan Univ Sci & Technol, Inst Biomed Engn & Mat Sci, Taichung 406, Taiwan
[2] Feng Chia Univ, Dept Automat Control Engn, Taichung 407, Taiwan
[3] Feng Chia Univ, Masters Program Biomed Informat & Biomed Engn, Taichung 407, Taiwan
[4] Feng Chia Univ, PhD Program Elect & Commun Engn, Taichung 407, Taiwan
[5] Univ Grenoble 1, CNRS, LIPhy UMR 5588, F-38041 Grenoble, France