xinbiyesheji3main.m

LDPC 码matlab程序

Tb=0.0001;PG=16;Tc=Tb/PG;fd=50;qpsk_phase_offset=pi/4;Drake=2;%PathDelay=[0 1 2 3];
%PathProfile=[0.25 0.25 0.25 0.25];
x=[-10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10];
y=x;
SimulationTime=10.0
hold off;
for index=1:4
    M=index;
 switch index
         case 1
            PathDelay=0;
            Delay=0;
            PathProfile=[0.25];
            color='-ro';
          case 2
             PathDelay=[0 1] ;
             Delay=[0 1];
             PathProfile=[0.25 0.25 ];
             color='-gX';
          case 3
              PathDelay=[0 1 2];
              Delay=[0 1 2];  
              PathProfile=[0.25 0.25 0.25];
              color='-bS';
           case 4
              PathDelay=[0 1 2 3];
              Delay=[0 1 2 3];
              PathProfile=[0.25 0.25 0.25 0.25];
            color='-c*'; 
 end

  for i=1:length(x)  
    db=x(i);
    sim('xinbiyesheji3');
    y(i)=mean(ErrVect);
  end

semilogy(x,y,color);
grid on;
title('Rake接收机不同叉指时的误码率');
xlabel('接收信噪比db ');
ylabel('误码比特率') ;
legend('L=1','L=2','L=3','L=4');
hold on;
end