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Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones

Abstract

A 2-bit adaptive sigma delta modulation system that inherently eliminates the idle tones present in conventional and other adaptive sigma delta systems is described. The system incorporates both memory and look-ahead instantaneous step-size estimations and, as shown by computer simulation results apart from eliminating the unwanted idle tones despite dithering, it offers improved SNR performance and extended dynamic range.

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Correspondence to G. S. Tombras.

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Open Access This article is distributed under the terms of the Creative Commons Attribution 2.0 International License (https://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Prosalentis, E.A., Tombras, G.S. Description of a 2-Bit Adaptive Sigma-Delta Modulation System with Minimized Idle Tones. EURASIP J. Adv. Signal Process. 2008, 426502 (2007). https://doi.org/10.1155/2008/426502

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  • DOI: https://doi.org/10.1155/2008/426502

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