RADIO COMMUNICATION DEVICE, RADIO COMMUNICATION SYSTEM, AND RADIO COMMUNICATION METHOD

摘要

When performing data transmission by using a plurality of streams such as MCW, it is possible to reduce the information amount to be fed back for each stream and control the feedback information error. A radio communication device performs data transmission by a plurality of code words in a plurality of streams and performs blanking transmission upon retransmission. The radio communication device includes; a Nack detection unit which detects Nack as a response signal to the reception result of the code word from a communication partner; a CQI bit quantity distribution decision unit which modifies the CQI bit quantity distribution between a plurality of streams upon detection of Nack; a feedback CQI information generation unit which generates CQI information of each stream in accordance with the decided CQI bit quantity distribution; and a feedback information transmission unit which transmits feedback information containing Ack/Nack information, stream ranking information, and generated CQI information.