1. Department of Electrical and Electronic Engineering, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan
2. Department of Electrical and Electronic Engineering, Graduate School of Science and Engineering, Saga University, 1 Honjo-machi, Saga 840-8502, Japan and Department of Electrical and Electronic Engineering, Jessore University of Science and Technology, Jessore 7408, Bangladesh