1. Associate Professor, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore (corresponding author).
2. Postgraduate Student, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore.
3. Adjunct Associate Professor, School of Electrical and Electronic Engineering, Nanyang Technological Univ., 50 Nanyang Ave., S639798, Singapore.