demuxstm4.m

Matlab实现SONET/SDH光通信系统simulink仿真程序源代码

function [e]=demuxSTM4(u)

              %**********************************************
              %* Demultiplexa byte a byte 1 STM-4 en 4 STM-1* 
              %**********************************************


[r,t]=size(u);
e=zeros(r,t);
s=1;s1=1;s3=1;
i=1;s2=1;
while i<=(t)
   h=1; q=1; x=1; n=1;
      while h<=8 
          e(:,s1)=u(:,i);
          i=i+1;
          h=h+1;
          s1=s1+1;
      end
      while q<=8
          e(:,s2+2160)=u(:,i);
          i=i+1;
          q=q+1;
          s2=s2+1;
      end
      while x<=8  
          e(:,s3+4320)=u(:,i);
          i=i+1;
          x=x+1;
          s3=s3+1;
      end
      while n<=8  
          e(:,s+6480)=u(:,i);
          i=i+1;
          n=n+1;
          s=s+1;
      end
end
end