| 摘要 |
PROBLEM TO BE SOLVED: To provide a CDMA line cipher system by which a communication line is hard to be intercepted and interfered. SOLUTION: The CDMA, communication system is provided with a control station 1 deciding a CDMA(Code Division Multpile Access) code except for the CDMA code of the CDMA communication line, which is used previous time, at random whenever a communication request is given from a calling station 2 and informing the decided CDMA code of the calling station 2 and an incoming station 3. |
