Performance of stochastic and deterministic dithered quantizers

Author

Carbone, Paolo ; Petri, Dario

Author_Institution

DIEI, Perugia Univ., Italy

Volume

49

Issue

2

fYear

2000

fDate

4/1/2000 12:00:00 AM

Firstpage

337

Lastpage

340

Abstract

In this paper, the authors discuss the use of deterministic and stochastic dither sequences in analog-to-digital conversion including data postprocessing. Properties of both types of dither signals are highlighted, and a performance comparison is carried out by considering residual bias and mean square error. It is concluded that superior performance can be attained by deterministic dither in terms of system resolution and accuracy, at the expense of worse spectral characteristics. Experimental results are provided to support simulations and theoretical analysis

Keywords

discrete time systems; mean square error methods; probability; quantisation (signal); sequences; signal resolution; signal sampling; stochastic processes; analog-to-digital conversion; conversion error signal; data postprocessing; data truncation; deterministic dither sequences; deterministic dithered quantizers; discrete-time system; mean square error; nonlinear systems; performance comparison; probability density function; quantization; residual bias; small oversampling ratios; spectral characteristics; stochastic dither sequences; stochastic dithered quantizers; system resolution; time-varying signal; whitening; Analog-digital conversion; Analytical models; Instruments; Mean square error methods; Psychoacoustic models; Quantization; Signal processing; Signal resolution; Stochastic processes; Switches;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.843074

Filename

843074