1. Institut für Halbleitertechnik (IHT), Universität Stuttgart, Pfaffenwaldring 47, Stuttgart 70569, Germany
2. Department of Electronics and Communications Engineering, National Institute of Technology (NIT), Silchar, Assam 788010, India
3. School of Computing and Electrical Engineering, Indian Institute of Technology (IIT) - Mandi, Mandi, Himachal Pradesh, 175075, India