| 摘要 |
A de-spread code phase detection apparatus in an SS receiver having a RAKE synthesizing demodulation function of receiving a pilot signal and a data signal which have undergone spread spectrum modulation, detecting a plurality of different de-spread code phases used for demodulation by performing de-spread processing of the pilot signal, separately performing de-spread demodulation of the data signal by using the plurality of de-spread code phases, performing predetermined weighting processing for the outputs upon phase matching, synthesizing the outputs, and outputting the resultant data, includes a search correlator, a search processing control section, and a search processing section. The search correlator obtains correlation results of the pilot signal and a de-spread code while sequentially changing the phase of the de-spread code. The search processing control section receives correlation results sequentially output from the search correlator and extracts a correlation result as a peak value. The search processing section detects a plurality of de-spread code phases used for demodulation by obtaining a plurality of correlation results from the correlation results extracted by the search processing control section in the order of decreasing values. <IMAGE> |
