1. a Department of Electrical and Computer Engineering , Polytechnic Institute of NYU , 105 Maxess Road, Melville , NY 11747 , USA
2. b Department of Electrical Engineering , SungKyunKwan University , 300 Chun-chun-dong, Jang-an-gu, Suwon , Kyung-gi-do 440–746 , South Korea