Question

If the step size of a system is 0.0721, find its quantization power?

(a) 3.25 x 10^-3

(b) 4.33 x 10^-4

(c) 4.33 x 10^-2

(d) 3.25 x 10^-1

This question was addressed to me in an online quiz.

This intriguing question originated from Comparison Between PM and AM in division Noise of Analog Communications

Answer 1

The correct option is (b) 4.33 x 10^-4

Explanation: Quantization noise is a type of quantization error generated by quantization due to analog-to-digital conversion communication systems. It is an approximate error between the analog input voltage to the ADC and the output discritized value.

Therefore, Quantisation power = ∆^2/12, where ∆=0.0721

      = (0.0721^2)/12 = 4.33 X 10^-4.