The computation for a cvx

the program

cvx_begin
variable tmp_w(N_a) complex;
minimize(norm(tmp_w,1));
subject to
norm(temp-Pro_M’*tmp_w,2)<=norm(temp,2)/30;
cvx_end

N_a is 96 ,temp is 96 * 1 matrix , Pro_M is 96 * 32 matrix ,
what is the computation about the argrithm?
if the Pro_M is M*N matrix ? what about the computation?
is there have some material about the computation of cvx ?
thank you!!