An integrated circuit for communicating with a reception apparatus using a plurality of divided frequency bands in a communication band, the communication band being divided into the plurality of divided frequency bands and each divided frequency band including a plurality of subcarriers, the integrated circuit comprising circuitry, which, in operation:
- generates information per divided frequency band according to a format including information on a spatial multiplexing number and information on a spatial multiplexing weight for use in a spatial multiplexing transmission with the reception apparatus;
- and
- transmits the generated information to the reception apparatus.