DISTORTION-COMPENSATION DEVICE AND DISTORTION-COMPENSATION METHOD

WIPO Patent Application WO/2014/103174

A1

Disclosed is a distortion-compensation device that, by appropriately generating distortion-compensation coefficients, makes it possible to obtain desired transmission output and substantially reduce the amount of power leakage to adjacent channels. A reception unit (103) in this distortion-compensation device accesses and demodulates a transmission signal to generate a demodulated signal. A delay-adjustment unit (104) computes the amount by which said demodulated signal is delayed relative to a baseband signal, uses the computed delay amount to eliminate said delay, and outputs the baseband signal and demodulated signal with the delay eliminated. A distortion-compensation unit (101) determines distortion-compensation coefficients for an adaptive digital predistortion process on the basis of the baseband signal and demodulated signal outputted by the delay-adjustment unit (104) and multiplies an input signal by said distortion-compensation coefficients.

WO/2012/083546	SIGNAL PROCESSING ARRANGEMENT AND SIGNAL PROCESSING METHOD
JPH10284950	HIGH FREQUENCY AMPLIFIER CIRCUIT
JPS56109008	FIELD EFFECT TRANSISTOR AMPLIFIER

HIRAI YOSHITO
OKAMOTO KOUJI

PCT/JP2013/007042

July 03, 2014

November 29, 2013

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PANASONIC CORP (JP)

H03F1/32; H04B1/04

WO2007013177A1

2007-02-01

JP2001345718A	2001-12-14
JP2011010107A	2011-01-13
JP2011091499A	2011-05-06
JP2011188321A	2011-09-22
JP2010183633A	2010-08-19

WASHIDA, KIMIHITO (JP)
Koichi Washida (JP)

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