Thank you very much. It works now. Stefan just to check if I am right, when I use (SNR_vec = linspace(30,0,8)) prior to simulation, is that means the scheduler receives the first value of SNR (30). Stefan if that’s right, why I didn’t see a big change in the results (cell throughput) after the reverse ? because I want to see what is the change when I reverse the values of SNR.