中文摘要：

该文介绍了一种盲区环境下在传统蜂窝系统加入中继功能的系统结构，并且描述了在这种环境下系统的解析模型。然后在这个模型的基础上，通过数学解析得到这种中继辅助蜂窝系统的呼叫中断概率。最后通过数值分析和性能比较证明了在盲区环境中，与无中继辅助的传统蜂窝系统相比较，中继辅助蜂窝系统可以获得更低的呼叫中断率。并且分析了节点移动速度、呼叫平均服务时间和节点覆盖半径等系统参数对这两种不同蜂窝系统性能的影响。

英文摘要：

This paper firstly introduces a new architecture of adding the relay function to cellular systems in the dead spots, and describes the system＇s analytical model under this environment. Then based on this model, the call outage probability of this cellular system with relaying can be derived with mathematical analyzing. Finally, through numerical calculation and performance comparison, the cellular system with relaying can be provided to attain more lower call outage probability than that of the traditional cellular system without relaying under the environment of dead spots, and the impact of the velocity, average call duration and radius of the mobile station on the performances of these two different cellular systems is also analyzed.