@article{3137658,
    title = "Description of a 2-bit adaptive sigma-delta modulation system with
minimized idle tones",
    author = "Prosalentis, E. A. and Tombras, G. S.",
    journal = "EURASIP Journal on Advances in Signal Processing",
    year = "2008",
    publisher = "SpringerOpen",
    issn = "1687-6172, 1687-6180",
    doi = "10.1155/2008/426502",
    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. Copyright (c) 2008."
}