The compensation of nonlinear distortion in the modem receiver

The compensation of nonlinear distortion in the modem receiver

  • CN 100,566,231 C
  • Filed: 08/30/2002
  • Issued: 12/02/2009
  • Est. Priority Date: 08/31/2001
  • Status: Active Grant
First Claim
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1. , a kind of method that is used for the self-interference of the signal that compensated receiver receives, this receiver comprises the multirate filter group of wavelet function as filter coefficient, this signal comprises the sub-band of a plurality of wavelet codings in time and frequency overlap, and this method comprises:

  • Received signal on receiver;

    By this received signal is rotated this received signal by the multirate filter group, comprise the rotating signal group of a plurality of frequency bands with generation;

    Come this rotating signal group of filtering by having separately second bank of filters of frequency band coefficient, wherein, each frequency band coefficient is calculated by the small echo inner product of first value of the differential difference of representing with time or phase place between a frequency band and nearby frequency bands, and this second bank of filters provides the measured value of each frequency band self-interference;

    Measured value definition weighting function according to this differential difference represented with time or phase place between this frequency band and this nearby frequency bands;

    The measurement of self-interference that weighting function is used for each frequency band is so that generate the correction factor of each frequency band;

    WithFrom this received signal, deduct the correction factor of each frequency band.

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