Problem in formulating my problem (sigma form) in CVX

1

I have a problem with formulating this constraint with CVX
Please HELP me
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each alfa i (n) is a scaler and Q is N * 2 matrix, each wi is a 1 * 2 matrix, eta gamma and H is constant, and number of i is K;

2

What are the optimization variables?

Have you proven this constraint is convex, which requires the left-hand side to be jointly concave in the optimization variables?