Distortion compensation apparatus and method

Distortion compensation apparatus and method

  • CN 101,753,105 B
  • Filed: 12/18/2009
  • Issued: 06/17/2015
  • Est. Priority Date: 12/18/2008
  • Status: Active Grant
First Claim
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1. a device for compensation of distortion, this device for compensation of distortion comprises:

  • Distortion compensation unit, it performs distortion compensation process by progression computing to transmitting;

    Coefficient update unit, its based on export after power amplification process is carried out to the output of described distortion compensation unit transmit export feedback signal and described in transmit, upgrade the progression operation coefficient group for described progression computing;

    Initial coefficients memory, its storage can as the progression operation coefficient group corresponding with the described maximal power level transmitted of the initial value of the coefficient update process carried out for described coefficient update unit;

    Power fluctuation detecting unit, the peak power transmitted described in its detection or the power fluctuation of average power, and, when power fluctuation being detected, from described initial coefficients memory, reading described progression operation coefficient group and described progression operation coefficient group is supplied to described coefficient update unit;

    AndPower fluctuation determining unit, when the power fluctuation transmitted described in described power fluctuation detecting unit detects, described power fluctuation determining unit controls whether change coefficient by described coefficient update unit according to the amount of described power fluctuation,Wherein, when the power fluctuation transmitted described in detecting, described power fluctuation detecting unit reads the progression operation coefficient group corresponding with the described maximal power level transmitted from described initial coefficients memory, and this progression operation coefficient group is supplied to described coefficient update unit.

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