Radio communication device and method for performing a multicarrier operation using a plurality of carriers

A radio communication device for performing a multicarrier operation using a plurality of carriers, the radio communication device comprising:

• a modulator that is configured to generate a modulated symbol sequence in accordance with a predetermined modulation scheme from an encoded data sequence to be transmitted;
• a data segmentation section that is configured to segment the modulated symbol sequence;
• and
• a segment mapping section that is configured to map segmented modulated symbol blocks on the plurality of carriers, wherein
• the data segmentation section includes:
• a symbol grouping section that is configured to group each part of a plurality of parts in the modulated symbol sequence which can be divided on the basis of subblocks in the encoded data sequence, into a same number of groups;
• a group cyclic shifter that is configured to cyclically shift a plurality of groups for each part of the plurality of parts with shift amounts which differ among the plurality of parts;
• and
• a group substitution and segmentation section which is configured to substitute the cyclically-shifted groups for each part of the plurality of parts in the modulated symbol sequence with one another among the plurality of parts, to segment the groups into a plurality of blocks.