Dear ahmetemir,
Step 1 is represented by parameter metric, step 2 by maximizing the metric, and step 3 is represented by the loop over the number of resource blocks.
Since the implementation was done long time ago, by another member of our team, hard to say one-to-one which parameter presents which part of the equation. To give you an idea, the parameter c represents the rate r, nominator of equation (16), while avgd_UE_throughputs represents the term (t_c – 1)*T_k.
In order to speed up the calculation, a lot of precalculation is done and vector/matrix notation is used.
Best regards,
Fjolla