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Noise shaping Riemann: an energy efficient data conversion scheme

Abstract : This paper presents a novel conversion scheme for time signals, especially suited for wireless communication applications. The digital/analog data representation paradigm is discussed and critical aspects are determined. It involves digital information coding, two-way digital/analog conversion and their respective efficiency. The proposed conversion scheme relies on a slight oversampling ratio (OSR), combined with a differentiating coding and a 1st order noise shaping loop. It achieves a resolution increased by 2.5 effective number of bits per doubling of the OSR. The resulting conversion efficiency combined with a moderate digital coding complexity leads to a substantial improvement of the energy cost of conversion compared to conventional Nyquist rate architectures. The efficiency gain is even higher for converters limited by thermal noise. It can reach a ten fold improvement for OSR around 10, which makes this architecture a good option for the handling of radio frequency signals.
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Contributor : Circuits And Systems Equipe <>
Submitted on : Sunday, July 2, 2017 - 10:32:16 AM
Last modification on : Saturday, March 14, 2020 - 12:36:18 PM



Yoan Veyrac, Francois Rivet, Yann Deval. Noise shaping Riemann: an energy efficient data conversion scheme. Analog Integrated Circuits and Signal Processing, Springer Verlag, 2017, pp.1-9. ⟨10.1007/s10470-017-0980-9⟩. ⟨hal-01552335⟩



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