Updated system design

src/main.tex

@@ -28,6 +28,9 @@
 \usepackage{color}
 \usepackage{epstopdf}
 \usepackage{xcolor}
+\usepackage{amsmath}
+\usepackage{multirow,bigdelim}
+
 % for banner
 \usepackage{tikz}
 % for title page