Title :
Effect of additive dither on the resolution of ideal quantizers
Author :
Carbone, Paolo ; Petri, Dario
Author_Institution :
Dipartimento di Elettronica e Inf., Padova Univ., Italy
fDate :
6/1/1994 12:00:00 AM
Abstract :
The effect of adding dither to a given signal before its quantization is investigated. To this aim the relationship between the statistical description of the dither and the mean value of the quantization error and of the quantizer output is derived. The presented results allow the determination of the resolution limits that can be achieved by low-pass filtering a set of quantized samples of a slowly varying dithered signal. Discrete, uniform, sinusoidal, and Gaussian dithering are analyzed, thus providing a quantitative basis for choosing the most appropriate dither signal for a given application
Keywords :
analogue-digital conversion; encoding; filtering and prediction theory; low-pass filters; statistical analysis; Gaussian dithering; additive dither; discrete dithering; ideal quantizers; low-pass filtering; mean value; quantization error; resolution limits; sinusoidal dithering; slowly varying dithered signal; statistical description; uniform dithering; Additives; Filtering; Fourier series; Helium; Instrumentation and measurement; Linearity; Low pass filters; Quantization; Signal analysis; Signal resolution;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
