COMMUNICATION SYSTEM, COMMUNICATION APPARATUS AND COMMUNICATION METHOD

摘要

There are included a plurality of mapping units to which a plurality of sets of data signal sequences related to the same data signal sequence are input via the respective ones of spectrum cyclic shift units and which place the input data signal sequences on the frequency axis and output the placed data signal sequences as transport frequency spectra; an allocation information acquiring unit that controls, based on allocation information, the plurality of mapping units to arrange the data signal sequences on the frequency axis and to cause the arranged data signal sequences to partially overlap; the spectrum cyclic shift units that shift the input data signal sequences by the cyclic shift amounts under control of a shift amount determining unit, thereby causing the partially overlapping data signals to become the same for output; and a plurality of transmission antennas via which the transport frequency spectra output by the plurality of mapping units are transmitted.