WIRELESS COMMUNICATION DEVICE AND WIRELESS COMMUNICATION METHOD

摘要

Disclosed is a method in which, when modulation data is mapped to a plurality of streams and this plurality of streams is transmitted/received, bias of the stream mapping in the transmission data can be reduced. A wireless communication device whereina stream mapper (14)that performs mapping to a plurality of streamssequentially mapsthe modulation symbol sequence of the output of a modulator (13) onto a plurality of streams at each of blocks that are output froma channel interleaver (12) that performs channel interleavingsuch as sub-block interleaving. In this process, the method of stream mapping is altered in each of prescribed units corresponding to the block size, for example at each of the sub-block length positions where sub-block interleaving is performed, or at each position of ½ of the sub-block length.