File:Cascade MAC algorithm.svg

\documentclass{standalone}

\usepackage{pgffor}         %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\usepackage{ifthen}         % This image is part of a large %
\usepackage{pgfplots}       % collection of diagrams. Some  %
\usepackage{libertineRoman} % or all of the used packages   %
\usepackage{biolinum}       % may not be necessary to com-  %
\usepackage{fontawesome5}   % pile this specific file but   %
\usepackage{epsdice}        % vital for others. Sorry for   %
\usepackage{mathtools}      % any inconvenience. -- Sn KGS  %
\usepackage{amsfonts}       %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\newcommand{\highlight}[1]{\textbf{\textsf{#1}}}
\newcommand{\todo}[1]{\textbf{\color{red}TODO: #1}}
\newcommand{\drawrand}{\ensuremath{\xleftarrow{\mathcal{R}}}}

\usetikzlibrary{decorations.pathreplacing}
\pgfplotsset{compat=1.17}

\begin{document}

\begin{tikzpicture}
[thick, algo/.style={draw, rectangle, minimum height=1cm, minimum width=1cm}]

\node (k) at (2,3) {$k$};
\node (m) at (9,8) {$m$};
\node (t) at (10,-2) {$t$};
\draw (3,-1) rectangle (16,7);
\node (E') at (3.5,6.5) {$E'$};

\foreach \x/\i in {5/0,7/1,9/2,13/{n-1}} {
    \draw (\x-1,5.5) rectangle (\x+1,4.5);
    \node (m\i) at (\x,5) {$m_{\i}$};
    \draw (\x,1.5) rectangle (\x+2,0.5);
    \node (c\i) at (\x+1,1) {$c_{\i}$};
    \node [algo] (E\i) at (\x,3) {$E$};
    \draw [->] (\x,4.5) -- (E\i);
    \draw [->] (\x-1.5,3) -- (E\i);
    \draw [->, rounded corners] (E\i) -| node [above] {$c_{\i}$} (\x+1,1.5);
}

\draw (E2) -- (10.5,3);
\draw (k) -- (3.5,3);
\node at (11,5) {$\cdots$};
\draw [dotted] (10.5,3) -- (11.5,3);
\node at (12,1) {$\cdots$};

\draw [decorate,decoration={brace,amplitude=0.5cm}] (4,5.5) -- (14,5.5);
\draw [decorate,decoration={brace,amplitude=0.5cm}] (15,0.5) -- (5,0.5);
\draw [->] (m) -- (9,6);
\draw [->] (10,0) -- (t);

\end{tikzpicture}

\end{document}