| Paper: | SPTM-P1.7 | ||
| Session: | Multi-rate Signal Processing and Wavelets | ||
| Time: | Tuesday, May 16, 10:30 - 12:30 | ||
| Presentation: | Poster | ||
| Topic: | Signal Processing Theory and Methods: Multi-rate Signal Processing and Wavelets | ||
| Title: | ON SIMULATIONS ABOUT THE PRECISION OF NON UNIFORM HYBRID FILTER BANK ANALOG/DIGITAL CONVERTERS | ||
| Authors: | Jean-Luc Collette, Michel Barret, Supélec, France | ||
| Abstract: | In this paper we present a theoretical study of the errors due to imperfect reconstruction and to quantization in hybrid filter bank (HFB) analog/digital (A/D) converters, that are non uniform i.e., with K channels and an arbitrary ratio M of the M-fold expanders. We propose then a new method of simulation for such HFB A/D converters that avoids any numerical computation of differential equation solutions. The results of simulation are compared with theoretical ones. Moreover, in HFB A/D converter studies, the effect of quantization noise is generally indicated by its average power at the output of the HFB, when it is M-cylostationary. This paper shows on an example that the variance of the global error can vary a lot in a period of M samples. | ||
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