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Question

The party-check matrix of a (6,3) linear block code is given by,

H=⎡⎢⎣100101010110001011⎤⎥⎦

If the code word received by the receiver is [001110], then the syndrome vector corresponding to the received code word will be equal to

A
[101]
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B
[100]
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C
[000]
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D
[110]
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Solution

The correct option is B [100]
If the received code vector is r and the party-check matrix is H, then the syndrome vector can be given as

s=rHT

=[0 0 1 1 1 0]⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢ ⎢100010001110011101⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥ ⎥=[1 0 0]

Note: In the problems related to linear block codes use EX-OR operation, whenever there is an addition operation of bits.

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