Aparna Sathya Murthy

i tried to use fmincon but the optimization stopped because MaxIterations is reached. i tried to increase the latter but it still didn't work

There is an entire toolbox devoted to this in matlab :

https://in.mathworks.com/products/optimization.html

Can you post the entire optimization problem? (not only the constraints)

You can use YALMIP toolbox https://yalmip.github.io/

Dear Faten Bd

See the following link:

https://www.mathworks.com/help/optim/ug/optim.problemdef.optimizationconstraint.html

This is code

c1=(a*P1*G1)/((1-a)*P1*G1+N1);

c2=P2*G2/N2;

C=10*log10(c1+c2)-9