Affiliation: | 1. Division of EEE, Dongguk University–Seoul , 26, 3-ga, Pil-dong, Chung-gu, Seoul 100-715 , Korea rykim@hanyang.ac.kr;3. Division of EEE, Dongguk University–Seoul , 26, 3-ga, Pil-dong, Chung-gu, Seoul 100-715 , Korea;4. Department of Electrical and Biomedical Engineering , Hanyang University , 222, Wangsimni-ro, Seongdong-gu, Seoul 133-791 , Korea |