METHOD OF ASSIGNMENT AND TRANSMISSION OF SPREAD SIGNALS IN DIRECT SEQUENCE SPREAD SPECTRUM CDMA MOBILE COMMUNICATION SYSTEM, MOBILE COMMUNICATION SYSTEM, AND TRANSMITTER, RECEIVER AND TRANSMITTER/RECEIVER OF MOBILE COMMUNICATION SYSTEM

摘要

There are provided a method of assignment and transmission of spread signals in a direct sequence spread spectrum CDMA mobile communication system that allows various services; a mobile radio communication system according to the method; and a transmitter, receiver and transmitter/receiver of the mobile radio communication system. Codes associated with each group of base stations or those associated with each type of network that the group of base stations belong to are assigned as the second spreading codes. The signals spread by the second spreading codes are transferred between the base station and mobile stations.