| 摘要 |
PROBLEM TO BE SOLVED: To provide a synchronization acquisition circuit that can realize detection of a received phase with high accuracy without increasing the scale of the synchronization acquisition circuit at a base station. SOLUTION: The synchronization acquisition circuit for a CDMA wireless base station is provided with a plurality of correlation devices (2a-2c) that execute a correlation arithmetic operation between a spread code and a plurality of quasi-synchronizing signals corresponding to a plurality of received signals of the CDMA system, a plurality of spread code generating circuits (3a-3c) that supply a plurality of spread codes referenced by the correlation arithmetic operation to the correlation devices, and a phase shift instruction circuit (7) that executes a synthesis correlation arithmetic operation on the basis of the synthesized quasi-synchronizing signal resulting from synthesizing a plurality of the quasi-synchronizing signals and instructs a plurality of the spread code generating circuits on the phase shift in response to the result of the synthesis correlation arithmetic operation. |
