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How is the variance of the quantization error related to the size of the DFT?
  • a)
    Equal
  • b)
    Inversely proportional
  • c)
    Square proportional
  • d)
    Proportional 
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
How is the variance of the quantization error related to the size of t...
Explanation: We know that each of the quantization has a variance of Δ2/12=2-2b/12.
The variance of the quantization errors from the 4N multiplications is 4N. 2-2b/12=2-2b(N/3).
Thus the variance of the quantization error is directly proportional to the size of the DFT.
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How is the variance of the quantization error related to the size of the DFT?a)Equalb)Inversely proportionalc)Square proportionald)ProportionalCorrect answer is option 'D'. Can you explain this answer?
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