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Communication SystemsChannel Coding

A cyclic code has the defining property that a cyclic shift of a valid codeword is?

  • AAlways invalid
  • BAlso a valid codeword
  • CNecessarily all zeros
  • DA carrier waveform
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Correct Answer: B. Also a valid codeword
Explanation: Cyclic codes are linear block codes closed under cyclic shifts of their codewords.
Reference: Standard communication systems: cyclic code
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