多速率码分多址系统中反向链路的爱尔兰容量

Erlang Capacity of Reverse Link in Multiple Rates CDMA Systems

提出了一种在多速率环境下分析码分多址系统的爱尔兰容量的方法，与单速率系统相比，给出了系统容量降低的比率．与传统的假设用户都具有等同数据速率的方法所不同，这种分析是在基于系统中产生呼叫和得到服务的用户具有不同数据速率的基础上进行的，并考虑了数据业务的比例数据业务的激活因子和业务速率的分布等因素．这种方法可以获得给定业务模型下的系统反向链路的爱尔兰容量，还可以获得由业务速率。

A method for analyzing the Erlang capacity of reverse link in multiple rates code division multiple access (CDMA) systems is proposed, and the reduced capacity compared to the single rate CDMA systems is yielded. Unlike the conventional method in which all users have equal data rates, the new analysis is on the basis of the fact that users of systems have different data rates. And elements with data services radio, data services activity factor, service rates distribution are also being considered. With this method, the system reverse link Erlang capacity of any given traffic type can be obtained. The relationship of the Erlang capacity and the data traffic model which is determined by the statistics parameters of data rates, services proportion and activity factor is also presented.