lass="comment">% The link capacity constraints can be expressed as A*x &lt;= c</span>
<span class="comment">% In the network rate problem the variables are the flow rates x. The</span>
<span class="comment">% objective is to choose the flow rates to maximize a separate utility</span>
<span class="comment">% function U, given by</span>
<span class="comment">%           U(x) = U_1(x_1)+U_2(x_2)+...+U_n(x_n)</span>
<span class="comment">% The network rate optimization problem is then</span>
<span class="commen