1. Temasek Laboratories, The National University of Singapore, Singapore 117411, Singapore
2. Department of Electrical and Computer Engineering, The National University of Singapore, Singapore 117583, Singapore
3. School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore
4. School of Engineering, Taylor’s University, 1 Jalan Taylor’s, 47500 Subang Jaya, Selangor DE, Malaysia