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The polynomial x 4 - 1 factorises to ( x - 1 ) ( x + 1 ) ( x 2 + 1 ) .
The polynomial factorises to Consider a cyclic code built using
a Generate a table of the messages and corresponding nonsystematic codewords from this code.
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b What is the Hamming distance of this code and hence, how many errors can this code correct?
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c Using your answer in b determine if this code is useful. Explain your answer.
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d Now consider a cyclic code with Encode the message in systematic form, giving your answer in binary format.
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