SIGNAL AMPLIFYING APPARATUS, TRANSMITTER, AND SIGNAL AMPLIFYING METHOD

摘要

A transmission signal amplifying apparatus has an OFDM subcarrier division unit, a transmission side analog unit, a digital distortion compensation unit, and a main signal combiner. The OFDM subcarrier division unit divides a signal whose frequency bands are continuous, and outputs a plurality of subcarrier aggregations obtained by the division in a state in which the frequency bands are adjacent to each other. The transmission side analog unit amplifies signals of a plurality of systems having the respective output subcarrier aggregations for the respective signals of the respective systems, while maintaining the above-described state. The digital distortion compensation unit compensates distortions of the amplified signals of the plurality of systems. The main signal combiner combines the signals of the plurality of systems whose distortions have been compensated, and outputs as an RF signal.

主权项

1. A signal amplifying apparatus comprising:
a division unit that divides a signal whose frequency bands are continuous, and outputs a plurality of subcarrier aggregations obtained by the division, in a state in which the frequency bands are not adjacent to each other; an amplification unit that amplifies signals of a plurality of systems including the respective subcarrier aggregations output from the division unit for the respective signals of the systems, while maintaining the state; a distortion compensation unit that compensates distortions of the signals of the plurality of systems amplified by the amplification unit; and a combining unit that combines the signals of the plurality of systems whose distortions have been compensated by the distortion compensation unit, and outputs as a radio signal.