• DocumentCode
    726018
  • Title

    A comparison of indirect learning and closed loop estimators used in digital predistortion of power amplifiers

  • Author

    Braithwaite, R. Neil

  • fYear
    2015
  • fDate
    17-22 May 2015
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    Indirect learning is often used as an estimator in digital predistortion of power amplifiers (PAs). The estimator has inherent flaws that become apparent when signal bandwidths increase. These include coefficient offsets, excessive ADC sampling requirements, and susceptibility to EVM and PA saturation. A comparison to the closed loop estimator shows that these flaws are specific to the indirect learning estimator.
  • Keywords
    power amplifiers; ADC sampling; EVM; PA saturation; closed loop estimators; coefficient offsets; digital predistortion; indirect learning estimators; power amplifiers; signal bandwidths; Cost function; Passband; Radio frequency; Digital predistortion; power amplifiers;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Symposium (IMS), 2015 IEEE MTT-S International
  • Conference_Location
    Phoenix, AZ
  • Type

    conf

  • DOI
    10.1109/MWSYM.2015.7166826
  • Filename
    7166826
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=726018