BASE STATION DEVICE, RESPONSE SIGNAL RECEPTION METHOD, AND INTEGRATED CIRCUIT

摘要

PROBLEM TO BE SOLVED: To provide an integrated circuit capable of minimizing degradation of separation characteristics of response signals to be code-multiplexed.

SOLUTION: A control part 209 controls both a ZC sequence to be used for primary spread in a spreading part 214 and a Walsh sequence to be used for secondary spread in a spreading part 217, according to association between each sequence and each of CCEs set in accordance with probability of using physical-resources for response signals corresponding to CCE numbers. The spreading part 214 performs the primary spread of the response signals using the ZC sequence set by the control part 209. The spreading part 217 performs the secondary spread of the response signals, after CP has been added, using a Walsh sequence set by the control part 209.

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