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EFFECTS OF ADC INTEGRAL NON-LINEARITY ON DIGITAL TRANSMISSION

A. Moschitta, D. Petri
  • Abstract:
    This paper investigates the effects of Integral Non-Linearity (INL) on the performances of both A/D converters and Digital Communication Systems, which exploit Direct Digital Modulation. The performances of both PCM and Sigma-Delta converters affected by INL are considered and compared. Then, the effects of INL upon the BER performances of an OFDM system are evaluated and modeled. The accuracy of the theoretical model is discussed with respect to the ADC resolution and INL levels. It is shown that a multibit Sigma-Delta converter, operating at a low oversampling ratio, may outperform PCM converters.
  • Keywords:
    OFDM, integral non-linearity, Sigma-Delta
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  • DOI:
    _unreg_tc4-2002.048

Event details:

  • IMEKO TC:
    TC4
  • Event name:
    TC4 Conference and Workshop 2002
  • Title:
    4th International Conference on Advanced A/D and D/A Conversion Techniques and their Applications (together with 7th IMEKO TC4 Workshop on ADC Modelling and Testing)
  • Place:
    Prague, CZECH REPUBLIC
  • Time:
    26 June 2002 - 28 June 2002