Table 2 State space for the two users case (coded and uncoded)

$\left(\begin{array}{ll}0& 0\\ 0& 0\end{array}\right)$

$\left(\begin{array}{ll}0& 1\\ 0& 0\end{array}\right)$

$\left(\begin{array}{ll}0& 0\\ 1& 0\end{array}\right)$

$\left(\begin{array}{ll}0& 1\\ 1& 0\end{array}\right)$