| 摘要 |
PROBLEM TO BE SOLVED: To prevent a deterioration of receiving characteristics by surely receiving a plurality of radio waves even when a peak position interval of the plurality of the radio waves arrived at the mobile station from a base station is narrow. SOLUTION: A finger assigner 5 assigns pass timing corresponding to the peak position of the plurality of the radio waves detected by a delay profile unit 4 to separate fingers 6, and decides a pass tracking range of each finger 6 based on the peak position interval of the plurality of the radio waves. For example, if the peak position interval of the plurality of the radio waves arriving at the base station 20 is narrow, the pass tracking range of the finger 6 is narrowed. The finger 6 has a variable pass tracking range, and executes a reverse diffusion of the digital base band signal converted by an AD converter 3 in the pass tracking range decided by the assigner 5 of zones before and after the pass timing assigned by the assigner 5. |
