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Communication SystemsSource Coding

A prefix code has the useful property that?

  • ANo codeword is a prefix of another codeword
  • BEvery codeword has exactly one bit
  • CAll source probabilities must be equal
  • DIt cannot be decoded sequentially
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Correct Answer: A. No codeword is a prefix of another codeword
Explanation: The prefix condition permits instantaneous decoding because a complete codeword cannot be confused with the beginning of another.
Reference: Standard communication systems: prefix code
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