Abstract: Based on the theory of random multiple address technology,a model of the multiple channels slotted ALOHA system is proposed,and the performances are studied.Through the theoretical analysis and calculation,average successful probability,idle probability and break probability are obtained.Through the queue theory,the average waiting and abiding time in the system are obtained;at the same time,packet conflict resolution and throughput are analyzed for the system.

Key words: ALOHA, multiple channels technology, throughput, packet conflict resolution