m_sequence.m

多用户检测算法的比较

%Generate m sequence
function [m_seq] = m_sequence(connections);
m = length(connections);		
L = 2^m-1;				% length of the shift register sequence requested
registers = [zeros(1,m-1) 1];		% initial register contents
m_seq(1)=registers(m);			% first element of the sequence
for i=2:L,
   new_reg_cont(1)=connections(1)*m_seq(i-1);
   for j=2:m,
     new_reg_cont(j)=registers(j-1)+connections(j)*m_seq(i-1);
   end;
   registers=new_reg_cont;		% current register contents
   m_seq(i)=registers(m);			% the next element of the sequence
end;