Title :
A noise model for quantized data
Author :
Bertocco, M. ; Narduzzi, C. ; Paglierani, P. ; Petri, D.
Author_Institution :
Dipt. di Elettronica e Inf., Padova Univ., Italy
Abstract :
The paper analyzes the overall conversion error of a noisy analog-to-digital (A/D) converter affected by Gaussian noise at its input or generated within the A/D itself. It is shown that under mild conditions concerning the ratio between the input noise standard deviation and the quantization step, the overall conversion error can be modeled by a Gaussian random variable uncorrelated with the input sequence. The power of the global conversion error is evaluated in closed formulae together with its degree of variability. Numerical simulations support the proposed analysis
Keywords :
Gaussian noise; analogue-digital conversion; integrated circuit modelling; white noise; Gaussian noise; closed formulae; global conversion error; input noise standard deviation; input sequence; noise model; noisy analog-to-digital converter; overall conversion error; quantization step; quantized data; random variable; Additive noise; Additive white noise; Analog-digital conversion; Circuit noise; Control systems; Electronic mail; Gaussian noise; Maximum likelihood estimation; Noise generators; Quantization;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1998. IMTC/98. Conference Proceedings. IEEE
Conference_Location :
St. Paul, MN
Print_ISBN :
0-7803-4797-8
DOI :
10.1109/IMTC.1998.676923
