CDMA网络优化中的导频污染问题

The pilot pollution problem in CDMA network optimization

在公众CDMA蜂窝移动通信网中,导频污染是影响网络服务质量和系统容量的一个重要原因.针对CDMA网络,从原理上分析了导频污染对网络的影响,从地形、导频信号强度、环境、基站天线等角度探讨了导频污染产生的原因,提出了诊断导频污染的2种方法和解决导频污染的一些原则.通过研究,初步找到了导频污染问题的分析方法和解决对策,应用于工作实践,取得了良好效果.

Pilot pollution is one of the key problems in public CDMA mobile network, which affects the service quality and capacity of network. Pilot pollution mechanism has been analyzed theoretically ; reasons that the pilot pollution causes from some different angles such as terrain, intensity of the pilot signal, environment, antenna of the base station has been discussed. Based on above, the paper proposes two methods to diagnose the pilot pollution and some principles to solve it. We have preliminarily found the analysis method and solving countermeasure of the pilot pollution through the research of this issue, which can apply to work practice and favorable effects.