Department of Electrical Engineering, Faculty of Engineering, Prince of Songkla University, 15 Kanjanavanich Road, Kho Hong, Hat Yai, Songkhla 90112 Thailand
H. Hu
School of Computer Science & Electronic Engineering, University of Essex, Colchester CO4 3SQ U.K.
P. Phukpattaranont
Department of Electrical Engineering, Faculty of Engineering, Prince of Songkla University, 15 Kanjanavanich Road, Kho Hong, Hat Yai, Songkhla 90112 Thailand
C. Limsakul
Department of Electrical Engineering, Faculty of Engineering, Prince of Songkla University, 15 Kanjanavanich Road, Kho Hong, Hat Yai, Songkhla 90112 Thailand