MHB Hamming Code: Need Help Fixing Mistakes? Get Expert Assistance Here!

[gEOdude]

Hey guys I've attampted to do this as best I can but i need some help, becasue i know there are mistakes i have to fix.

View attachment 4321

 

[I like Serena]

Hey guys I've attampted to do this as best I can but i need some help, becasue i know there are mistakes i have to fix.

Hi HELPMEHELPME! :)

Checking the parity means that there should be an even number of 1's for each parity bit.
For P4 there are 3 bits that are 1, meaning that it has incorrect parity (instead of correct parity).

As a result, there is 1 bit wrong in the section 4,5,6,7 (P3), and there is also 1 bit wrong in section 8,9,10,11 (P4).
What might you conclude from that?

 

[gEOdude]

Hi HELPMEHELPME! :)

Checking the parity means that there should be an even number of 1's for each parity bit.
For P4 there are 3 bits that are 1, meaning that it has incorrect parity (instead of correct parity).

As a result, there is 1 bit wrong in the section 4,5,6,7 (P3), and there is also 1 bit wrong in section 8,9,10,11 (P4).
What might you conclude from that?

Is this better? Or is is two bits that had to be corrected? Thanks. View attachment 4323

 

[I like Serena]

Is this better?

That fixes the mistakes in the correct/incorrect parities.
Good! :)

However, since we see that some of the parities are incorrect, we know that at least 1 bit has been flipped...

 

[gEOdude]

That fixes the mistakes in the correct/incorrect parities.
Good! :)

However, since we see that some of the parities are incorrect, we know that at least 1 bit has been flipped...

Could you give me a hint, on what i should do. Which bit to flip? I thinks its one of more of 5 or 7 or 9 or 11 or is it another one ? I'm so close i just need a little push.

 

[I like Serena]

Could you give me a hint, on what i should do. Which bit to flip? I thinks its one of more of 5 or 7 or 9 or 11 or is it another one ?

Indeed, one of those must be wrong.

More specifically, from P3 we can tell there is a bit wrong in the section 4,5,6,7.
And from P4 we can tell there is a bit wrong in section 8,9,10,11, which must necessarily be a different bit, since they don't overlap.
What might we conclude from that?

 

[gEOdude]

Indeed, one of those must be wrong.

More specifically, from P3 we can tell there is a bit wrong in the section 4,5,6,7.
And from P4 we can tell there is a bit wrong in section 8,9,10,11, which must necessarily be a different bit, since they don't overlap.
What might we conclude from that?

There not all wrong are they? (Thinking) is it 5? PRETTY PLEASE I NEED TO KNOW IM GOING NUTS!

 

[I like Serena]

There not all wrong are they? (Thinking) is it 5? PRETTY PLEASE I NEED TO KNOW IM GOING NUTS!

We can tell there are at least 2 bits wrong. We have insufficient information to tell which ones exactly.