| 摘要 |
PROBLEM TO BE SOLVED: To provide a mobile station device, a base station device, and an integrated circuit in which CQI (Channel Quality Indicator) reception performance is enhanced even when a delay or the like in a propagation path occurs, a transmission timing error occurs, or residual interference occurs between different cyclic shift amounts of a ZC (Zadoff-Chu) sequence.SOLUTION: A partial sequence (Wand W) of (+ and +) or(- and -) of Walsh sequence is applied to a second symbol and a sixth symbol of an ACK/NACK (Acknowledgment/Negative Acknowledgment) signal multiplexed with an RS (Reference Signal) of CQI, and + as an RS phase of the second symbol and - as an RS phase of the sixth symbol are added to the RS of the CQI transmitted from a mobile station. A base station 100 receives a multiplex signal of the ACK/NACK signals and the CQI signals transmitted from a plurality of mobile stations, and an RS synthesis section 119 synthesizes the CQI signals while arranging the RS phase of the CQI. |
