PREDISTORTER

申请公布号：JP2010171760(A)

申请号：JP20090012671

申请日期：2009.01.23

申请公布日期：2010.08.05

申请人：

JAPAN RADIO CO LTD

发明人：SHIBATA TAKAKI;HANEDA TORU

分类号：H03F1/32

主分类号：H03F1/32

摘要：PROBLEM TO BE SOLVED: To provide a predistorter capable of increasing a follow-up speed and a convergence speed while keeping distortion compensation accuracy. SOLUTION: The predistorter includes: a distortion compensation circuit 11 for assigning an input signal X to a distortion compensation polynominal to output a generated predistortion compensation signal A to a compensation object circuit 401; and a control part 13 for inputting the input signal X and an output signal Y of the compensation object circuit 401 thereto to estimate and update a coefficient value of the distortion compensation polynominal based on the difference between a signal generated by assigning the input signal X to the distortion compensation polynominal and a signal generated by assigning the output signal Y to the distortion compensation polynominal. COPYRIGHT: (C)2010,JPO&INPIT

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