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为提高分布式天线系统的能耗效率,建立了多点协同传输(Co MP)系统模型,对其信道传播模型、能耗评价指标、系统覆盖率及基站间距离与系统能耗效率之间的关系进行了分析,得出Co MP环境下基站间距离与系统能耗效率之间的关系表达式,并借助蒙特卡罗法进行了仿真.仿真结果表明,在Co MP系统中,随着基站间距离的增加,单位面积能耗存在由大变小再变大的趋势;同时单位面积增长量对单位面积能耗增长量的绝对贡献也是先由大变小再变大,且系统单位面积能耗减小对系统频谱效率的影响相对较低.因而在Co MP系统下存在一个单位面积能耗最低的分布式天线部署策略.
In order to improve the energy efficiency of distributed antenna system, a multi-point co-transmission (CoMP) system model is established, and its channel propagation model, energy consumption evaluation index, system coverage and distance between base stations and system energy efficiency Relationship between the base station in the Co MP environment and the energy efficiency of the relationship between the base station between the expression and the Monte Carlo method was used to simulate the simulation results show that in the Co MP system, With the increase of distance, the energy consumption per unit area tends to become bigger and then larger. At the same time, the absolute contribution of unit area growth to energy consumption per unit area increases from large to small and then increases, and the energy consumption per unit area Therefore, there is a distributed antenna deployment strategy with the lowest energy consumption per unit area under the Co MP system.