Wireless communication system, transmission apparatus, and wireless communication method

A wireless communication system comprising:

• a reception apparatus configured to receive a transmission signal, the transmission signal being decomposed into a plurality of sub-spectra and transmitted by a transmission apparatus, wherein
• the reception apparatus comprises:
• an interference estimation unit configured to estimate a frequency band of an interference signal in a reception signal on which the interference signal having a narrower frequency band than a frequency band of the transmission signal transmitted by the transmission apparatus is superimposed;
• a feedback unit configured to feed back the frequency band of the interference signal estimated by the interference estimation unit to the transmission apparatus;
• and
• a band synthesis unit configured to synthesize a plurality of sub-spectra of a frequency band corresponding to the plurality of sub-spectra decomposed by the transmission apparatus, and
• the transmission apparatus comprises:
• a band division control unit configured to perform control, based on the frequency band of the interference signal fed back from the reception apparatus, for determining a band in which the transmission signal is divided;
• and
• a band division unit configured to band-divide the transmission signal into the plurality of sub-spectra, based on the band determined by the band division control unit, to superimpose the interference signal and the sub-spectra partially.