Hi,,how do I execute the do loop in matlab.I am explaining the problem below.

Question

nafila aytija 2016-6-9

0
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https://ww2.mathworks.cn/matlabcentral/answers/288898-hi-how-do-i-execute-the-do-loop-in-matlab-i-am-explaining-the-problem-below

回答：秋月 2022-9-26

I have a command.I want to execute it until the condition becomes false.How do I do that?

noise=(rand(1,length(H))<.3)*3 ; %%%channel model %%I am taking 3 as erasure bit
for i=1:1:length(noise)
      if noise(i)==3
          Codeword(i)=3;
      else Codeword;
      end
  end
Codeword;   %%%%%codeword with noise after passing through the channel
a=sum(Codeword==3)
H_dummy=zeros(size(H,1),size(H,2));
for i=1:1:size(H,1)
      for j=1:1:size(H,2)
          if Codeword(j)==3
              if H(i,j)==1;
                  H_dummy(i,j)=3;   
              else H_dummy;
              end
          end
      end
  end
H_dummy ; %%%only erasures are kept for weight calculation
for i=1:1:size(H,1)
      for j=1:1:size(H,2)         %%%column
          if Codeword(j)~=3
              if H(i,j)==1
                  H(i,j)=Codeword(j);
              end
          end
      end
  end
for i=1:1:size(H,1)
    for j=1:1:size(H,2)
          if Codeword(j)==3
              if H(i,j)==1
                  H(i,j)=0;  %%%%eliminating nodes
              end
          end
      end
  end
  H;
Check_node=mod(sum(H,2),2);
for i=1:1:size(H_dummy,1)
 weight=sum(H_dummy(i,:)==3); %%%%this matrix is used to check weight row-wise (actually check nodes with degree one)
        for j=1:1:size(H_dummy,2)
            if weight==1
                if H_dummy(i,j)==3;
                 Codeword(j)=Check_node(i);
           end
           end
     end
  end