Error:Index in position 1 exceeds array bounds.

8 次查看（过去 30 天）
Skanda
Skanda 2024-6-23
评论： Matlab Pro 2024-6-24
Ran in:
Code:
sum_parity=[];
llr=2;
check_node=cell(size(H,1),1);
Unrecognized function or variable 'H'.
for(i=1:size(H,1))
for(j=1:size(H,2))
if(H(i,j)==1)
check_node{i}=[check_node{i} j];
else
;
end;
end;
end;
Q=[];
for(i=1:size(H,1))
Q=[Q llr];
end;
for(interation=1:1000)
[ processed_llr ] = check_node_processing(Q, check_node);
Processed_llr_in_varibale_form=cell(size(H,2),1);
for(i=1:length(processed_llr))
temp=processed_llr{i};
for(j=1:size(temp,2))
Processed_llr_in_varibale_form{round(temp(2,j))}=[Processed_llr_in_varibale_form{round(temp(2,j))} [temp(1,j);i]];
end;
end;
for(i=1:length(Processed_llr_in_varibale_form))
temp=Processed_llr_in_varibale_form{i};
for(j=1:size(temp,2))
Q(i,temp(2,j))=sum(setdiff(temp(1,:), temp(1,j)));
end;
end;
for(i=1:size(Q,1))
for(j=1:size(Q,2))
Q(i,j)=Q(i,j)+llr(i);
end;
end;
P=[ ];
for(i=1:length(Processed_llr_in_varibale_form))
temp=Processed_llr_in_varibale_form{i};
P(i)=sum(temp(1,:));
end;
P=P+llr;
for(jj=1:length(P))
if(P(jj)>=0)
estimated_output(jj)=0;
else
estimated_output(jj)=1;
end;
end;
parity_mat=H*estimated_output';
sum_parity=[sum_parity sum(parity_mat) ];
if(sum(parity_mat)==0)
break;
break;
end;
end;
Error:
Error in ldpc_decoder (line 57)
P(i)=sum(temp(1,:));
  2 个评论
Torsten
Torsten 2024-6-23
编辑：Torsten 2024-6-23
We cannot execute your code because H is undefined. But my guess is that "temp" is an empty matrix.
Matlab Pro
Matlab Pro 2024-6-24
Hi @Skanda
even if H is defined - there is a call to "check_node_processing" function - which is not given.
Please supply all code needed in order to help you

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