Wireless transmission apparatus and wireless transmission method

A radio transmission apparatus comprising:

• a scheduling section that allocates frequency such that a plurality of bandwidths of division bands to divide and allocate transmission data of a communicating party in a frequency domain, are all equal, and intervals between the plurality of the division bands are all equal, when a number of the division bands is equal to or greater than a threshold in a discrete Fourier transform spread orthogonal frequency division multiple access scheme, and generates data allocation information including an allocation result;
• and a transmission section that transmits the generated data allocation information,
• wherein the scheduling section comprises a control section that controls the threshold according to a communication condition of the communicating party, and
• wherein the control section sets the threshold smaller when the communicating party performs stream multiplexing before a transmission power amplifier than when the communicating party does not perform stream multiplexing before the transmission power amplifier.

A radio transmission method comprising:

• determining, based on a channel quality, a number of divisions, into which transmission data of a communicating party is divided;
• and
• allocating frequencies to which the divisions are respectively mapped in a discrete Fourier transform spread orthogonal frequency division multiple access scheme, wherein:
• (i) the frequencies are allocated under a condition that bandwidths of the frequencies are all equal and intervals between the frequencies are all equal, when the number of the divisions is equal to or greater than a threshold, and (ii) the frequencies are allocated without the condition, when the number of the divisions is less than the threshold.