TRANSMISSION DEVICE AND NOISE REMOVAL METHOD

摘要

A base station device includes: a converting unit that converts a transmission signal with a multi-bit quantization bit rate to a signal with a quantization bit rate smaller than the quantization bit rate of the transmission signal; a first amplifier that amplifies the signal; an extracting unit that extracts a noise component generated in the signal due to the conversion; a second amplifier that amplifies the noise component; a combining unit that combines the signal amplified by the first amplifier with the noise component amplified by the second amplifier to remove a noise component included in the amplified signal; and an adding unit that adds, based on an error between the signal from which the noise component has been removed and the transmission signal, distortion to the signal that is input to the first amplifier or the noise component that is input to the second amplifier.

主权项

1. A transmission device comprising:
a converting unit that converts a transmission signal with a multi-bit quantization bit rate to a signal with a quantization bit rate smaller than the quantization bit rate of the transmission signal; a first amplifier that amplifies the signal converted by the converting unit; an extracting unit that extracts a noise component generated in the signal due to the conversion performed by the converting unit; a second amplifier that amplifies the noise component extracted by the extracting unit; a combining unit that combines the signal amplified by the first amplifier with the noise component amplified by the second amplifier to remove a noise component included in the amplified signal; and an adding unit that adds, based on an error between the signal from which the noise component has been removed by the combining unit and the transmission signal with the multi-bit quantization bit rate, distortion to the signal that is input to the first amplifier or the noise component that is input to the second amplifier.