Andrew B. J. Teoh, S. A. Samad* and A. Hussain*
Faculty of Information Science and Technology (FIST)
Multimedia University
75450, Melaka, Malaysia
E-mail: bjteoh@mmu.edu.my
*Electrical, Electronic and System Engineering Department
National University of Malaysia
43600, Bangi, Malaysia
E-mail: {salina; aini}@eng.ukm.my