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    • 1. 发明专利
    • SEQUENTIAL PATH RETRIEVAL METHOD OF MOBILE COMMUNICATION SYSTEM
    • JP2000031937A
    • 2000-01-28
    • JP15575099
    • 1999-06-02
    • SAMSUNG ELECTRONIC
    • KIM HEE-SUBAHN JAE-MIN
    • H04J13/00H04B7/26
    • PROBLEM TO BE SOLVED: To improve the operation of a sequential retrieval unit by making a retrieval unit retrieving energy at the next retrieving position of the next Walsh symbol when the existence of a signal is confirmed at a specific retrieving position of a Walsh symbol that is not located at the boundary of a power control group and to retrieve it at a retrieving position that is the same as the preceding one of the next Walsh symbol when it is not confirmed. SOLUTION: A retrieval unit retrieves energy at a specific retrieving position of read symbol data (s2) and confirms if it is equal to or more than upper limit that is perliminarily set (s5). If it is not equal to or more than the upper limit, it confirms if it is lower limit (s7). And, if it equals to or less than the lower limit, the retrieval unit records that a signal is not detected at the corresponding retrieving position (s8). When a retrieval result is neither equal to or more than the upper limit nor equal to or less than the lower limit and when the existence of a signal is not decided, it is confirmed whether the current retrieving position is the boundary of power control group (s9). If it is not the boundary, it returns to (s2) and checks energy at the same retrieving position of the next Walsh symbol.