MULTICARRIER DIRECT SPREADING CDMA COMMUNICATION SYSTEM USING PLURAL WALSH CODES

摘要

PURPOSE: A multicarrier direct spreading CDMA communication system using plural wash codes is provided to prevent degradation of a multicarrier direct spreading CDMA communication system and decrease its capacity reduction. CONSTITUTION: This multicarrier direct spreading CDMA communication system includes a transmitting device cross spreading each of signals to be transmitted by using different cross codes for each transmission path employing carrier waves different in phase and frequency; and a receiving device counter-spreading the signals transmitted from the transmitting device by using different cross codes. The present invention can enhance the overall system performance and minimize the interference.