1. Graduate School of Engineering, Kyushu Institute of Technology,Fukuoka,Japan
2. Kyushu Institute of Technology,Faculty of Engineering,Department of Electrical and Electronics Engineering,Fukuoka,Japan
3. Kyushu Institute of Technology,Faculty of Computer Science and Systems Engineering,Department of Computer Science and Networks,Fukuoka,Japan
4. City College of New York,Department of Electrical and Computer Engineering,New York,USA