for loop only shows value of last iteration.

for SNR_db=0:10
    N=((E)/(10^(SNR_db/10)));
    r=((H*Q1)+N);
    Ymf=transpose(H)*r;
    Ymf_dec=pskdemod(Ymf,4);
    Ymf_bi=de2bi(Ymf_dec,4);

Er=(b_bar-Ymf_bi); 
end

for SNR_db=0:10 only shows the last iteration which is 10. i want every iteration value of this loop in order to compare them.

Answer 1

[KL]

You're overwriting all your variables inside the loop so you'd only see the result of the last iteration. You'd need to use arrays to store output of each iteration.

 %preallocate
 N = zeros(1,11);
 SNR_db=0:10;
 %other variables as well
 for k = 1:11
    N(k)=((E)/(10^(SNR_db(k)/10)));
    ...
 end

or use matlab wisely without a loop,

 SNR_db = 0:10;
 N=E./(10.^(SNR_db./10));
 %and so on