1. Department of Intelligent Robot Engineering, Pukyong National University, Busan, Republic of Korea
2. Radsys, Daegu, Republic of Korea
3. Electromagnetic Technology Research Center, Kookmin University, Seoul, Republic of Korea
4. Electronics and Telecommunications Research Institute, Daejeon, Republic of Korea
5. Department of Electronics and Communications Engineering, Korea Maritime & Ocean University, Busan, Republic of Korea
6. Department of Electronics Engineering, Pukyong National University, Busan, Republic of Korea