bin_to_con.m

qam的matlab程序。m文件

function f=bin_to_con(msg,constl)

vals=imag(constl(1:sqrt(length(constl))));
nc=log(sqrt(length(constl)))/log(2);
f=zeros(1,length(msg)/nc);

m=1;
for k=1:nc:length(msg)
  a=[];
  for i=0:nc-1
    a=strcat(a,num2str(msg(k+i)));
  end
  f(m)=vals(base2dec(a,2)+1);
  m=m+1;
end