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Non-idealities Compensation in Full-Digital Receivers with Application to Ultra-Wide Band

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Abstract

Nowadays many transceivers adhere to full-digital design principles, with the basic operations performed in the analog domain (filtering, down-conversion) and the whole remaining processing postponed to the digital domain (including matched filtering and synchronization). Though the operations in the analog front-end are ideally reversible, hence no signal degradation should occur before the analog-to-digital conversion (thus preserving the information integrity), however the intrinsic non-idealities in the circuitry may introduce a certain level of distortion. In this paper we provide a simple and flexible approach for the compensation of these effects. We derive useful formulas for obtaining a digital compensation filter by means of a direct transformation of the analog system coefficients. This allows to easily perform the compensation in the digital domain via fast Fourier transform. To illustrate the procedure, the case-study of a ultra-wide band receiver is addressed. Numerical results show that an improvement of more than 1 dB can be obtained at bit-error rate of interest for the applications. Sample code is also provided for an easy implementation.

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Acknowledgments

This work was supported by the “RENDEZ-VOUS” project, P.O. Puglia 2007–2013 FESR—Asse I, Linea 1.2, Azione 1.2.4. Authors wish to thank the engineers at CMC s.r.l. (Carovigno, Italy) for their support in the project.

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Authors and Affiliations

  1. Department of Innovation Engineering, University of Salento, via Monteroni, 73100 , Lecce, Italy

    Angelo Coluccia, Vincenzo Chironi & Stefano D’Amico

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  1. Angelo Coluccia
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  2. Vincenzo Chironi
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  3. Stefano D’Amico
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Correspondence to Angelo Coluccia.

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Coluccia, A., Chironi, V. & D’Amico, S. Non-idealities Compensation in Full-Digital Receivers with Application to Ultra-Wide Band. Wireless Pers Commun 78, 671–686 (2014). https://doi.org/10.1007/s11277-014-1777-0

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  • DOI: https://doi.org/10.1007/s11277-014-1777-0

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