CRC循环冗余校验的matlab仿真程序

CRC循环冗余编码的编译码过程,在matlab下的仿真程序

function [Xerror]=CRCdecode（B）
G=[11100100001100111];
LG=length（G）;
LB=length（B）;
P=B（1:LG）;
pointer=LG;
while pointer<=LB
        P=xor（PG）;
          if pointer==LB
               break;
          end     
         if sum（P）==0
              for i=1:LG
                  pointer=pointer+1;
                  P（i）=B（pointer）;
                  if pointer==LB
                      break;
                  end    
              end
               
         else
               for j=1:LG
                  if P（j）==1
                      k=j;
                           for i=1:LG+1-k
                              P（i）=P（k-1+i）;
                           end
                      break;
                   end
                end
                if k>1 
                    for i=LG-k+2:LG
                       pointer=pointer+1;
                       P（i）=B（pointer）;
                       if pointer==LB
                           break;
                       end    
                    end
                end           
         end          
 end
 
 if sum（P）==0
     error=0;
     X=B（1:end-LG+1）;
 else
     error=1;
     X=B（1:end-LG+1）;
 end  

 属性            大小     日期    时间   名称
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     文件       1231  2007-01-16 14:22  crc_matlab\CRCdecode.m

     文件        405  2007-05-07 21:14  crc_matlab\crcmainprogram.m

     文件       1673  2007-01-14 20:58  crc_matlab\cyclic_redundancy_code.m

     文件       1961  2007-01-14 21:28  crc_matlab\cyclic_redundancy_decode.m

     目录          0  2009-02-28 23:41  crc_matlab

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