RADIO TRANSMISSION DEVICE AND RADIO TRANSMISSION METHOD Russian patent published in 2012 - IPC H04J11/00 

FIELD: information technology.

SUBSTANCE: for the second symbol and the sixth symbol of the ACK/NACK signal which are multiplexed by RS of CQI, (+, +) or (-, -) is applied to a partial sequence of the Walsh sequence. For RS of CQI transmitted from a mobile station, + is added as an RS phase of the second symbol and - is added as an RS phase of the sixth symbol. A base station (100) receives multiplexed signals of ACK/NACK signals and CQI signals transmitted from a plurality of mobile stations. An RS synthesis unit (119) performs synthesis by aligning the RS phase of CQI.

EFFECT: improved CQI reception performance even when a delay is caused in a propagation path, a transmission timing error is caused, or residual interference is generated between cyclic shift amounts of different ZC sequences.

9 cl,17 dwg