| 摘要 |
<p>PROBLEM TO BE SOLVED: To speedily perform frame synchronization. SOLUTION: In inverse diffusers 11-14, two kinds of respectively different base station codes are combined to generate a new code allocated by the number of symbols within one slot by a base station code generator 4 and while using this code, inverse diffusion is performed at the timing given from a timing generator 5. Power accumulators 21-24 cumulatively add the outputs of the respectively correspondent inverse diffusers 11-14. Thus, a discrimination circuit 3 detects the cumulatively added result having a power level higher than a preset level and detects the identification data of a path (any one of inverse diffusers 11-14), which receives the cumulated result, and a slot number which receives the cumulated result. From the detected results of the discrimination circuit 3 and the allocation information of the base station code generator 4, a control part 6 performs the frame synchronization while specifying the base station code to be used for demodulation and the head of a frame.</p> |
