Hi there, I am running cvx but I run into this error.
Error using + (line 45)
Matrix dimensions must agree.
Error in multi_power (line 14)
(1/N)sum(sum(a(k,:,:).(log(sum(P_crl.h(k,:,:), 3) + sigma_2)/log(2) - (D(k,:,:).(P_crl - P) + log(E(k,:,:))/log(2))), 3), 2) >= eta_pow;
My code is as follows:
function [result,output] = multi_power(P, K, N, M, P_max, a, h, sigma_2, D, E)
for m = 1:M
for n = 1:N
0 <= P_crl(1,n,m) <= P_max;
for k = 1:K (1/N)*sum(sum(a(k,:,:).*(log(sum(P_crl.*h(k,:,:), 3) + sigma_2)/log(2) - (D(k,:,:).*(P_crl - P) + log(E(k,:,:))/log(2))), 3), 2) >= eta_pow; end cvx_end result = cvx_optval; output = P_crl;
In this part, variables a, h, D, E are of dimension (K,N,M), P is of dimension (1,N,M). And sigma_2 and P_max are just a number. I have no idea why it keeps telling me dimension error. Any help is greatly appreciated! Thanks!
Another thing that confuses me is that when I replace the variable P_crl with a known P, which should be of the same size, the equation will show no error. It means the LHS of Line 14 can have a certain value if I use P instead. But P_crl and P should be of the same dimension so I really have no idea why it doesn’t work when I try to use P_crl.