Radio transmission device and radio reception device

A radio transmitting apparatus that transmits a layered-modulated OFDM signal, the radio transmitting apparatus comprising:

• a first subcarrier modulation section that forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals to a frequency domain;
• a second subcarrier modulation section that forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of modulation signals;
• an inverse Fourier transform section that forms an OFDM signal by performing an inverse Fourier transform on the first and second subcarrier modulation signals;
• and
• a subcarrier mapping section that is provided ahead of the inverse Fourier transform section and controls allocation of the first and second subcarrier modulation signals to a plurality of subcarriers forming the OFDM signal,
• wherein a control signal is modulated using a previously stipulated subcarrier modulation section of the first and second subcarrier modulation sections.

A radio transmitting apparatus that transmits a layered-modulated OFDM signal, the radio transmitting apparatus comprising:

• a first subcarrier modulation section that forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals to a frequency domain;
• a second subcarrier modulation section that forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of modulation signals;
• an inverse Fourier transform section that forms an OFDM signal by performing an inverse Fourier transform on the first and second subcarrier modulation signals;
• a subcarrier mapping section that is provided ahead of the inverse Fourier transform section and controls allocation of the first and second subcarrier modulation signals to a plurality of subcarriers forming the OFDM signal;
• and
• a plurality of antennas,
• wherein the subcarrier mapping section allocates the first and second subcarrier modulation signals to a common subcarrier among antennas.

A radio transmitting apparatus that transmits a layered-modulated OFDM signal, the radio transmitting apparatus comprising:

• a first subcarrier modulation section that forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals to a frequency domain;
• a second subcarrier modulation section that forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of modulation signals;
• an inverse Fourier transform section that forms an OFDM signal by performing an inverse Fourier transform on the first and second subcarrier modulation signals;
• a subcarrier mapping section that is provided ahead of the inverse Fourier transform section and controls allocation of the first and second subcarrier modulation signals to a plurality of subcarriers forming the OFDM signal;
• an encoder that executes error correction encoding processing on a transmission bit sequence;
• and
• a parser section that distributes output of the encoder to the first and second subcarrier modulation sections,
• wherein the first and second subcarrier modulation sections include a carrier modulation section that modulates a post-error-correction-encoding transmission bit sequence input from the parser section.

A radio transmitting apparatus that transmits a layered-modulated OFDM signal, the radio transmitting apparatus comprising:

• a first subcarrier modulation section that forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals to a frequency domain;
• a second subcarrier modulation section that forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of modulation signals;
• an inverse Fourier transform section that forms an OFDM signal by performing an inverse Fourier transform on the first and second subcarrier modulation signals;
• a subcarrier mapping section that is provided ahead of the inverse Fourier transform section and controls allocation of the first and second subcarrier modulation signals to a plurality of subcarriers forming the OFDM signal;
• an encoder that executes error correction encoding processing on a transmission bit sequence;
• an interleaver that interleaves output of the encoder;
• and
• a parser section that distributes output of the interleaver,
• wherein the first and second subcarrier modulation sections include a carrier modulation section that modulates a post-error-correction-encoding transmission bit sequence input from the parser section.

A radio transmitting apparatus that transmits a layered-modulated OFDM signal from first and second antennas, the radio transmitting apparatus comprising:

• a first subcarrier modulation section that forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals to a frequency domain;
• a second subcarrier modulation section that faints a second subcarrier modulation signal obtained by parallel conversion of a plurality of modulation signals;
• a first inverse Fourier transform section that forms an OFDM signal transmitted from the first antenna by performing an inverse Fourier transform on the first subcarrier modulation signal;
• a second inverse Fourier transform section that forms an OFDM signal transmitted from the second antenna by performing an inverse Fourier transform on the second subcarrier modulation signal;
• a first subcarrier mapping section that is provided ahead of the first inverse Fourier transform section and controls allocation of the first subcarrier modulation signal to a plurality of subcarriers forming the OFDM signal;
• and
• a second subcarrier mapping section that is provided ahead of the second inverse Fourier transform section and controls allocation of the second subcarrier modulation signal to a plurality of subcarriers forming the OFDM signal.