Sincerely search for help ；

I just have no idea if

R = R+weight(it)*log2(1+pow_abs(H_ef(it,it),2)/(sum_inf+1/SNR));

is a convex function or not. I don’t know how to fix it.

my code is given as follow：

cvx_clear

cvx_begin

variables W(M,K)

expressions H_ef temp_R

Q = Pc+pow_pos(norm(W),2)/eta;

H_ef = H*W;
for o =1:K
for it=1:K
for k=1:K
if k~=it
sum_inf = sum_inf+pow_pos(norm(H_ef(it,k)),2);
end
end
R = R+weight(it)*sqrt(r) - (y^2)*Q);

*log2(1+pow_abs(H_ef(it,it),2)/(sum_inf+1/SNR)); end temp_R(o) = R; end maximize (2*y

subject to

pow_pos(norm(W),2) <= Pmax;

for k=1:K

temp_R(k) >= Rmin;

end

cvx_end

solution(i) = cvx_optval;

W

solution(i)

end

I run my code and i get the error state:Disciplined convex programming error:

Cannot perform the operation: {convex} ./ {convex}

Thanks for help!