x*log(1+y/x) = -rel_entr(x,x+y)
x*log2(1+y/x) = -rel_entr(x,x+y)/log(2)
inv_pos(x*log2(1+y/x)) = inv_pos(-rel_entr(x,x+y)/log(2))
Read CVX Users’ Guide
Use MATLAB’s help for cvx commands, such as
help rel_entr.
Read posts on this forum and use its search box.