Hey,

I’m trying to implement the following optimization problem:

```
max a * log(1 + H11(hermitian) * X1 * H11)
X1 >= 0 , X2 >= 0 , Y >= 0
s.T. H21(hermitian) * X2 * H22 + Y * sigma1.^2 = 1
H12(hermitian) * X1 * H12 + H22(hermitian) * X2 * H22 >= Y * E2/a
Tr(X1) <= y* P1 , Tr(X2) <= y* P2
```

with the following correspondence:

```
y = 1/(H21(hermitian) * S2 * H21 + sigma1.^2) > 0,
X1 = Y * S1 , X2 = Y * S2
```

Always getting an error due to the log. I dont really know how to solve this problem without the logarithm.