MOBILE COMMUNICATION SYSTEM

摘要

PURPOSE:To allow the system with a large capacity to be immune to narrow band disturbance and to revise a data rate with respect to the radio communication system. CONSTITUTION:The spread spectrum system is adopted for the radio communication system and when plural data strings are sent with a same carrier while varying spread code patterns C1-C5, a data string of the same spread code pattern is subjected to time division multiplexing and communication channels #1-#20 are allocated to each slot. Both advantages of immunity of the spread spectrum system to narrow band disturbance and a variable data rate of the time division multiplexing system are utilized by providing a spare time slot T5 to a data string for disturbance avoidance. Thus, many number of communication channels are ensured by a few spread code patterns thereby suppressing the deterioration in the desired wave reception level by other spread code in a same carrier. Furthermore, the movement of the time slot is solved at the reduction in the desired wave reception level by providing the standby time slot.