| 摘要 |
PROBLEM TO BE SOLVED: To provide a phase rotation amount estimate device suitably used for a mobile communication terminal adopting the CDMA (code division multiple access) communication system that uses an extrapolation pilot and an interpolation pilot jointly to enhance the accuracy with respect to estimated phase rotation amount independently of a control condition such as TPC (transmission power control). SOLUTION: The phase rotation amount estimate device is configured to comprise first pilot signal despread sections 22-1 to 22-3 that apply despread processing to a first pilot signal spread by a spread code different from a spread code of a communication channel, second pilot signal despread sections 26-1 to 26-3 that apply despread processing to a second pilot signal inserted to the data signal and spread by the same spread code as that of the data signal, a first complex arithmetic section 23a, a second complex arithmetic section 23b, and estimate result output sections 23e, 23f, 23g, 23h that use the results of the first and second arithmetic processing operations to output an estimate result of a phase rotation amount for synchronization detection of the received signal. |
