Hong-Chou Kao, Ming-Fu Tsai, Shi-Yu Huang, Cheng-Wen Wu,
Wen-Feng Chang* and Shyue-Kung Lu+
Department of Electrical Engineering
National Tsing-Hua University
Hsinchu, 300 Taiwan
*Department of Computer Science and Information Engineering
Van-Nung Institute of Technology
Taoyuan, 320 Taiwan
+Department of Electrical Engineering
Fu-Jen Catholic University
Hsinchuang, 242 Taiwan