非理想因素下的CoMP性能分析与仿真

摘要

多点协作(CoMP)能够有效改善小区边缘频谱效率,因而成为3G长期演进中高级演进(LTE-A)研究中的热点课题.为了研究存在信道状态指示参考信号(CSI-RS)估计误差和反馈时延情况下的CoMP的性能,对CSI-RS信道估计误差和时延特性进行了相应的分析,并在这些非理想因素下通过仿真对CoMP进行了性能评估,其结论是:即使考虑非理想因素的影响,CoMP技术仍然能够在很多实际场景中提高系统性能,因此,该技术在未来移动通信的研究中具有重要意义.%The frequency efficiency of cell edge can be improved greatly by coordinated multi point (CoMP) transmlssion and reception, which is a hot subject for research on 3G long term evolution-advanced (LTE-Advanced or LTE-A). To study the performance of CoMP with imperfect factors, the estimation error of CSI-RS and the feedback delay are analyzed. The performance evaluation of CoMP with imperfect factors are conducted by the system level simulation, through which the following conclusions are obtained: the system performance can be improved by using CoMP even if the imperfect factors are considered. Therefore, CoMP is very useful for the future mobile communication systems.