| 摘要 |
PROBLEM TO BE SOLVED: To provide an integrated circuit for randomizing both intercell interference and intracell interference.SOLUTION: A diffusion section 214 performs a primary diffusion of a response signal on a ZAC line set by a control section 209. A diffusion section 217 performs a secondary diffusion on a response signal after the primary diffusion on a block-wise spread code line set by the control section 209. A control section 209 controls the cyclic shift amount on the ZAC line used for primary diffusion by the diffusion section 214 and the block-wise spread code line used for the secondary diffusion by the diffusion section 217 according to a preset hopping pattern. The hopping pattern set by the control section 209 is constituted of a two layered hopping pattern. The first layer defines the hopping pattern of an LB base which is different from each other for randomizing the intercell interference. The second layer defines a hopping pattern which is different from each other depending on a mobile station for randomizing the intracell interference. |
