8 research outputs found
A Deterministic Analysis of Decimation for Sigma-Delta Quantization of Bandlimited Functions
We study Sigma-Delta () quantization of oversampled bandlimited
functions. We prove that digitally integrating blocks of bits and then
down-sampling, a process known as decimation, can efficiently encode the
associated bit-stream. It allows a large reduction in the
bit-rate while still permitting good approximation of the underlying
bandlimited function via an appropriate reconstruction kernel. Specifically, in
the case of stable th order schemes we show that the
reconstruction error decays exponentially in the bit-rate. For example, this
result applies to the 1-bit, greedy, first-order scheme
Conception et implémentation d'un décodeur dédié à un modulateur sigma-delta
Introduction aux convertisseurs analogique-numériques -- Le décodage dans les convertisseurs Sigma-Delta -- Formulation mathématique du processus de décodage développé -- Architecture du module de décodage dynamique