Here is my code

cvx_begin

variable W(N,I) complex

variable u(I,1)

variable y

variable t(I,1)

variable m(I,1)

variable v(I,1)

```
expression V1(I,1)
expression V2(I,1)
expression V3(I,1)
V1 = zeros(I,1);
V2 = zeros(I,1);
V3 = zeros(I,1);
for i=1:I
hi = h(:,i);
for l=1:I
if(l~=i)
V1(i) = V1(i) + real(W(:,l)'*conj(hi)*hi.'*W(:,l));
V2(i) = V2(i) + 2*sqrt(m_hat(i)*v_hat(l))*sqrt(m(i)*v(l));
V3(i) = V3(i) + m_hat(i)*v_hat(l)/(1 + m_hat(i)*v_hat(l))*(m(i)^2+v(l)^2)/2;
end
end
```

Matlab says "Unable to perform assignment because value of type ‘cvx’ is not convertible to ‘double’ ". The error is at this line “V1(i) = V1(i) + real(W(:,l)‘*conj(hi)*hi.’*W(:,l));” and h is a given complex variable matrix.

I have already use expression to store V1, V2 and V3, so i don’t know why it has this error.