Max-min and proportional fairness in CVX?

How shloud i solve( and coding) this problem in CVX??

I’m going to go ahead and close this right now. This is not a forum for general modeling assistance. It would be one thing if you were having trouble expressing a mathematical constraint that you have already constructed using CVX primitives, but you haven’t done that. Feel free to post a new question if you have a truly CVX-specific question.