Uyen, Nguyen Hoang Phuong, Integrated Circuit Design Research & Education Center (ICDREC), Vietnam National University Ho Chi Minh City ( VNUHCM ), Community 6, Linh Trung Ward, Thu Duc District, Ho Chi Minh City, Vietnam and Research and Development Center – Saigon Hi-Tech Park, Lot I3, N2 Street, Saigon Hi-Tech, Viet Nam