Can I use CVX to solve the problem which use function trace?

Wc and Wd, N dimensions hermitian semidefinite matrix,are variables to be solved. Hdd and Hddk are N dimensions constants.others are scalar constant.
Is this question(Especially the constraints C2) convex?Can I deal with it by CVX? Why it occurred the following error when I run my code?
Disciplined convex programming error:
Cannot perform the operation: {real affine} ./ {real affine}
I need help and many thanks!