euclidean distance,output
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we compute the euclidean distance for each received word as follows:
- 010 ---> 0.154
- 011 ---> 0.256
- 100 ---> 0.472
- 111 ---> 0.023
- 000 ---> 0.882
in the above list, the minimum distance is 0.023 corresponding to code word 111.
How to get 111(code word with minimum euclidean distance) out from the list as our output in the command window??
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Answers (2)
Sean de Wolski
on 23 Jun 2011
I have no idea how the above is organized but if it's just an nx2 array:
C = [010 0.154
011 .256
100 0.472
111 .023
000 0.882];
[idx,idx] = max(C(:,1));
C(idx,2)
So:
[idx, idx] = max(array1);
array2(idx)
?
Matt Fig
on 23 Jun 2011
You could make a little function:
function y = mydist(x)
% Takes a three digit binary string argument.
switch x
case '010'
y = 0.154;
case '011'
y = 0.256;
case '100'
y = 0.472;
case '111'
y = 0.023;
case '000'
y = 0.882;
otherwise
y = [];
end
Then when you want to use it:
>> y = mydist('111')
y =
0.0230
>>
3 Comments
Matt Fig
on 23 Jun 2011
If you only need one output, then get rid of the SWITCH, and just use an IF statement to check if the input is a match.
if strcmp(x,'111')
y = 0.023;
else
y = [];
end
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