多小区协作系统的仿真实现及性能分析-《计算机技术与发展》

文章信息/Info

Title:: Simulation Realization and Performance Analysis of Multi-cell Cooperation System

Keywords:: multi-cell cooperation system; LTE; system simulation; spectral efficiency

摘要:: 基于对移动通信宽带化的认识,3GPP组织启动了LTE( Long Term Evolution)演进项目。 LTE-Advanced作为LTE的进一步演进版本,提出了很多新的关键技术,协作式多点传输( Coordinated Multiple Point ( CoMP) Transmission/Recep-tion)技术就是其中之一。该技术通过多个小区之间的联合调度或协作传输,降低邻区干扰,提高用户接收信号质量。文中通过对多小区协作系统传输模型的分析,设计并搭建了多小区协作系统仿真平台,主要包括网络拓扑结构, Wrap-around,大/小尺度衰落,链路干扰分析,自适应调制编码,预编码方案。在不同模式下,对系统进行了仿真与分析,结果表明该系统可以有效提高小区平均和小区边缘的频谱效率

Abstract:: Based on the awareness of broadband mobile communications,3GPP started the LTE (Long Term Evolution) Project. As the further evolution of LTE,LTE-Advanced introduced a lot of new key technologies. Coordinated Multiple Point ( CoMP) Transmission/Reception technology is one of them. By joint operation or collaboration transmission for more than one cell,reduce interference with ad-jacent areas,thus improving the quality of the user receiving signal. In this paper,analysis of multi-cell cooperation system model,con-struct a system level simulation platform which includes network topology,Wrap-around,large/small-scale fading,link quality,AMC and pre-coding scheduling. Simulations under different situations are done,and it shows that multi-cell cooperation system can effectively improve spectral efficiency