CHIA-CHENG WANG1, *Guan-Cheng Dong1, JUNG-CHIH CHEN1, CHING-CHENG CHUANG1, CHIA-YEN LEE2
(1. Institute of Biomedical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan, 2. Department of Electrical Engineering, National United University, Miaoli 36063, Taiwan)