How I can fix the problem in CVX?

Hello everyone!

Can you help me with the problem? When I run the code here, it doesn't work right because matlab CVX does not perform divide.

M = 7;
Nt = 8;
L = 5;
Pmax = 40; 
u = 0.5;
sigma = -70; 
delta = -50; 
SNRdB = 10; 
gamma = 10.^(SNRdB/10);
Iota = 40; 
h = zeros(Nt,M); 
g = zeros(Nt,L); 
for i=1:M 
    h(:,i) =sqrt(1/2)*(randn(Nt,1)+1i*randn(Nt,1)); % Nt antenna to 1 SR  
end
for i=1:L 
    g(:,i) =sqrt(1/2)*(randn(Nt,1)+1i*randn(Nt,1)); % Nt antenna to 1 PU  
end

H = (h*ctranspose(h));
G = (g*ctranspose(g));
cvx_begin
variable W(Nt,Nt)
variable theta
minimize(0);
subject to
0 >= abs(trace(W))-Pmax;
0 >= gamma*sigma + gamma*(delta/theta) - abs(trace(H*W));
0 >= abs(trace(G*W)) - Iota;
0 < theta < 1;
W >= 0;   
cvx_end

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This error appears:

[Image Analyst]

What are the sizes of gamma, delta, theta, H, and W? Some or all are matrices and can't do that. Maybe try ./ instead of /

[Khiem Nguyen]

I've read http://cvxr.com/cvx/doc/CVX.pdf and i'know that Matlab_cvx not support square, devide calculator. But CVX replace that calculator in table below.

[Walter Roberson]

gamma is constant scalar = 10

delta is constant scalar = -50

theta is scalar optimization variable

H is numeric 8x8 complex

W is 8x8 optimization variable

[Khiem Nguyen]

Thank you very much

[Walter Roberson]

So possibly

0 >= gamma*sigma + gamma*delta*inv_pos(theta) - abs(trace(H*W));

?