| 摘要 |
PROBLEM TO BE SOLVED: To obtain an inverse spreading device of W-CDMA which enables the easy demodulation of all the pieces of data even when a delay quantity between plural paths is extended across a symbol or even when an offset is extended across the symbol depending on a rate when the offset exists in communication data between base stations connected presently. SOLUTION: The inverse spreading device for phase-composing a spread reception signal incoming via plural paths and inverse-spreading it is provided with plural sliding correlator parts 3-a, 3-b and 3-c which input the spread reception signal and the symbol timing and inverse spread code of each path from a code generator part 2, perform correlation arithmetic between the spread reception signal and the inverse spread code and accumulate the correlation value for each symbol to output an integrated correlation value to each path. The inverse spreading device is provided with delay devices 8-a, 8-b and 8-c for matching delay quantities between the respective paths with the input of a sliding correlator. |
