Wireless communication system, baseband processing device, and wireless device

A baseband processing device configured to transmit a data signal to a wireless device via an optical transmission line and receive a feedback signal according to an output signal generated through amplification of the data signal in the wireless device from the wireless device via the optical transmission line, the baseband processing device comprising:

• a memory;
• and
• a processor coupled to the memory and configured to
• receive the feedback signal from the wireless device, and
• execute first processing of multiplying the data signal by a distortion compensation coefficient corresponding to an inverse characteristic of distortion in a wireless frequency circuit on a basis of the feedback signal.

A wireless device configured to receive a data signal from a baseband processing device via an optical transmission line and carry out wireless transmission of an output signal obtained by amplifying the data signal, the wireless device comprising:

• a radio frequency circuit configured to amplify the data signal to generate the output signal;
• a memory;
• and
• a processor coupled to the memory and configured to
• generate a feedback signal according to the output signal generated by the radio frequency circuit, and
• transmit the feedback signal to the baseband processing device via the optical transmission line.