What is the variance of the output DFT coefficients |X(k)|? – McqOptions

MCQOPTIONS

1.	What is the variance of the output DFT coefficients \|X(k)\|?
A.	\(\frac{1}{N}\)
B.	\(\frac{1}{2N}\)
C.	\(\frac{1}{3N}\)
D.	\(\frac{1}{4N}\)
Answer» D. \(\frac{1}{4N}\)

Discussion

No Comment Found

Related MCQs

How many number of bits are required to compute the DFT of a 1024 point sequence with a SNR of 30db?
What is the signal-to-noise ratio?
What is the variance of the output DFT coefficients |X(k)|?
Every fourfold increase in the size N of the DFT requires an additional bit in computational precision to offset the additional quantization errors.
What is the range in which the quantization errors due to rounding off are uniformly distributed as random variables if Δ=2-b?
EVERY_FOURFOLD_INCREASE_IN_THE_SIZE_N_OF_THE_DFT_REQUIRES_AN_ADDITIONAL_BIT_IN_COMPUTATIONAL_PRECISION_TO_OFFSET_THE_ADDITIONAL_QUANTIZATION_ERRORS.?$
What is the signal-to-noise ratio?$
What_is_the_variance_of_the_output_DFT_coefficients_|X(k)|?$
How many number of bits are required to compute the FFT of a 1024 point sequence with a SNR of 30db?
What is the value of the variance of quantization error in FFT algorithm, compared to that of direct computation?