초록 ▼

A de-spread code phase detection apparatus and method 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, is provided. The apparatus detects a plurality of different de-spread code phases u

A de-spread code phase detection apparatus and method 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, is provided. The apparatus detects 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 resultant data. The apparatus 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 peak value correlation results. The search processing section detects a plurality of de-spread code phases used for demodulation by obtaining a plurality of correlation results in decreasing order of value from the peak value correlation results extracted by the search processing control section.

대표청구항 ▼

[ What is claimed is:] [4.] A method of de-spread code phase detection for use in a spread spectrum receiver having a RAKE synthesizing demodulation function, comprising the steps of:receiving a pilot signal and a data signal which have undergone spread spectrum modulation;first detecting a pluralit

[ What is claimed is:] [4.] A method of de-spread code phase detection for use in a spread spectrum receiver having a RAKE synthesizing demodulation function, comprising the steps of:receiving a pilot signal and a data signal which have undergone spread spectrum modulation;first detecting a plurality of different de-spread code phases used for demodulation by performing de-spread processing of said pilot signal and providing outputs;obtaining a plurality of correlation results of the pilot signal and a de-spread code while sequentially changing a phase of the de-spread code;extracting peak value correlation results from the obtained plurality of correlation results; andperforming a search processing for only the extracted peak value correlation results and second detecting a plurality of de-spread code phases used for demodulation of the data signal.