HYBRID DISTORTION COMPENSATION METHOD AND HYBRID DISTORTION COMPENSATION APPARATUS

摘要

A hybrid distortion compensation method and apparatus that greatly improves the capability to compensate for non-linear distortion due to a high frequency power amplifier over a wideband in strict conditions of smaller size and reduced power consumption. An adaptive pre-distortion section (14) and a feed forward distortion compensation circuit (30) are connected via a D/A converter (20), an A/D converter (28) and the like, and signals of parts of the feed forward distortion compensation circuit (30) are taken out using a switch circuit (SW), fed back to a digital signal processing system, and processed using highly accurate digital signal processing in a control-monitoring section (60). After an adjustment section (51) makes characteristics of two input signals of the feed forward distortion compensation circuit (30) coincide, feed forward distortion compensation is performed. A sequencer (80) controls the components sequentially.