PN SEQUENCE IDENTIFYING APPARATUS OF CDMA COMMUNICATION SYSTEM

摘要

PURPOSE: A PN(Pseudo-random Noise) sequence identifying apparatus is provided to decrease a hardware complexity of a mobile station and a interference due to secondary synch channel from a base station to the mobile station in CDMA(Code Division Multiple Access) communication system. CONSTITUTION: A base station transmitter generates the relatively less interference as compared to system using no a null cod by using an orthogonal code including a null code to identify the PN sequence. A mobile station receiver decreases one the number of correlator within a parallel correlator group to identify the PN sequence by comprising no correlator corresponding to the null code. The orthogonal code except for the null code is a orthogonal gold code. Thereby, it is possible to decrease the hardware complexity of the mobile station and the interference from the base station to the mobile station by decreasing the number of the correlator and using the null code as the orthogonal code to search the PN sequence for a short period of time.