摘要
为解决异构网络中的干扰问题,研究了在LTE-A异构网络中进行相干协作多天线传输,并使用迫零预编码时不同功率分配方案对系统性能的影响。包括按最大数据率分配、按公平性分配和等功率分配,并进行了相应的仿真分析。结果表明,三种功率分配方案对宏用户的影响差别并不大,主要差别体现在微用户上;宏用户的数据率主要受到微小区与宏用户位置关系的影响,而这种影响本质上是由微基站的单机站功率约束造成的。
In order to solve the inference problems in Het-Net, coherent cooperative multi-antenna transmission in LTE-A Het-Net is studied. The impact of different power allocation scheme on system performance when using zero- forcing precoding is discussed. The simulations of maximum data rate allocation, fairness allocation and equal power allocation are analyzed. The results show that the three kinds of power allocation schemes don＇ t have a large impact on the macro-user, the main difference, however, is reflected on the micro-user. The data rate of macro- user is mainly affected by the location relations between micro-cell and macro-user, and this effect is essentially the result of single station power constraint Of micro-station.
出处
《移动通信》
2013年第22期16-20,25,共6页
Mobile Communications
