CALCULATION METHOD, BASE STATION DEVICE, AND CALCULATION CIRCUIT

PROBLEM TO BE SOLVED: To provide a calculation method capable of suppressing from increase of power consumption and circuit scale in calculation processing.SOLUTION: The calculation method calculates a first correction coefficient for correcting a distortion due to a power amplifier on the basis of...

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Bibliographische Detailangaben
Hauptverfasser:	TOYOMANE AKIRA, SATOUCHI YOSHIHIRO, AKUTAGAWA TAKESHI, KONNO SHUNICHI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AMPLIFIERS BASIC ELECTRONIC CIRCUITRY ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY TRANSMISSION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a calculation method capable of suppressing from increase of power consumption and circuit scale in calculation processing.SOLUTION: The calculation method calculates a first correction coefficient for correcting a distortion due to a power amplifier on the basis of a first feedback signal which is fed back from the output of the power amplifier and an input signal before being input to the power amplifier. The calculation method also calculates a second correction coefficient for correcting the phase and magnitude of a signal output from a filter on the basis of a second feedback signal which is fed back from the output of a filter after the power amplifier and the input signal.SELECTED DRAWING: Figure 1 【課題】演算処理における消費電力と回路規模との増大を抑制する。【解決手段】演算方法は、パワーアンプの出力からフィードバックされた第１のフィードバック信号とパワーアンプに入力される前の入力信号とに基づいて、パワーアンプによる歪を補正するための第１の補正係数を演算する。また、演算方法は、パワーアンプの後段のフィルタの出力からフィードバックされた第２のフィードバック信号と入力信号とに基づいて、フィルタから出力される信号の位相および振幅を補正するための第２の補正係数を演算する。【選択図】図１