1. Department of Electronics and Telecommunication Engineering, Rajshahi University of Engineering and Technology (RUET), Rajshahi, Bangladesh
2. Institute of ICT, Rajshahi University of Engineering and Technology (RUET), Rajshahi, Bangladesh
3. James Watt School of Engineering, University of Glasgow, Glasgow, U.K.
4. Department of Electronics and Information Engineering, Korea University, Sejong, South Korea