Question

construct hamming code for the message (1001) Consider even parity 2p ≥ p+m+1

construct hamming code for the message (1001)

Consider even parity

2p ≥ p+m+1

Homework Answers

Answer #1

Given message is (1001)

Here the number of parits bits are 3 because When no of bits in message  m= 4

2p >= p+4+1 =p+5

when 2p >= p+ 5 , p should be 3

Therefore p = 3

So, now to transmit 4 bit message we require atleast 3 parity bits.

1 2 3 4 5 6 7
p1 p2 m1 p3 m2 m3 m4
p1 p2 1 p3 0 0 1

p1-> check 1,3,5,7 for even parity = p1101

here to make this even parity p1 must be 0, so p1 = 0

p2-> check 2,3,6,7 for even parity = p2101

here to make this even parity p2 must be 0, so p2 = 0

p3-> check 4,5,6,7 for even parity = p3001

here to make this even parity p3 must be 1, So p3= 1

Now replace the p1,p2,p3 with the above results.

p1 p2 m1 p3 m2 m3 m4
0 0 1 1 0 0 1

Therefore our required hamming code is 0011001

(If you still have any doubts regarding this answer please comment I will definitely help)

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