MEMORY EFFECT CANCELLER, TRANSMITTER, AND MEMORY EFFECT CANCELLING METHOD

摘要

A memory effect canceller includes a sample obtaining section that obtains a plurality of discrete-time samples of a transmission signal supplied to a power amplifier that amplifies a transmission signal, a signal generation section that generates a correction signal that is a weighted linear combination, using given weighting coefficients, of partial derivatives of a transfer function of the power amplifier, wherein the transfer function has been defined in advance with a plurality of discrete-time samples as input variables, and wherein the partial derivatives are based on the discrete-time samples obtained by the sample obtaining section at respective times, and a signal correction section that corrects an output signal of the power amplifier based on the correction signal.