Consider a binary memory less system that transmits two symbols x₁ and x₂ with the same probability i.e. \(P\left( {{x_1}} \right) = P\left( {{x_2}} \right) = \frac{1}{2}\). If the channel matrix is given as \(P\left( {\frac{y}{x}} \right) = \left[ {\begin{array}{*{20}{c}} {0.25}&{0.75}\\ {0.25}&{0.75} \end{array}} \right]\) then the channel is: