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First considering the signal in space link loss,in combination with lowest relay protection field intensity,power and the reasonable analysis and determination of parameters such as system allowance,a repeater Egli model was adopted to cover radius expression was drew.Secondly on the repeater distribution location,center incentive model of cellular communication system was improved to the center-vertex incentive model.The model area of coverage can be increased by 4%,the user coverage increased by 22%.The repeater distribution in communication system provides a good optimization.

In order to study the problem of how to choose the wireless channel connection system to meet the needs of users in the wireless communication environment,according to the number of users using the Irish call loss,the estimated number of users need to meet the channel should be provided.Followed by the number of channels to establish the rela-tion model between user requirements and system capacity,introducing comprehensive evaluation factors to evaluate FDMA,TDMA and CDMA communication system.Finally a solution was put forward to meet the optimal decision the needs of users.This scheme not only realizes the effective utilization of the channel,and the channel has certain redun-dancy,avoid the system reconstruction caused by future user growth,capital waste,provides a measure of win-win choice for different number of users of the communication system.