LTE-Advanced中的CoMP-SU-MIMO技术研究及资源调度设计
首发时间:2012-07-09
摘要:LTE的物理层是基于正交频分复用(OFDM)和多输入多输出(MIMO)技术。LTE-Advanced是LTE的进一步演进,LTE-Advanced中提出了改善小区边缘用户的性能的要求及相应的技术。CoMP技术正是LTE-Advanced的提高边缘用户频谱效率,扩大网络覆盖面积的关键技术之一,CoMP技术有效的抑制了小区间的干扰。文章首先阐述了CoMP的重要性和技术原理;之后在原有LTE平台上搭建了LTE-Advanced系统级仿真平台,对SU-MIMO下的CoMP技术进行仿真,并提出了一种新的适用于CoMP的调度机制。从仿真结果可以看到使用了本文提出的调度算法的CoMP技术对小区吞吐量和小区边缘用户频谱效率有很大的提升。
关键词: LTE-Advanced CoM SU-MIMO 调度算法 扇区吞吐量 边缘频谱效率
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Research and Resorce Scheduling Scheme in LTE-Advanced System
Abstract:The physical layer of LTE is based on orthogonal frequency division multiplexing (OFDM) and multiple input multiple output (MIMO) technology. LTE-Advanced is a further evolution of LTE, and LTE-Advanced requirements to improve the performance of cell edge users and proposes corresponding technologies.CoMP technology is one of the key technologies in LTE-Advanced system to improve edge user spectral efficiency and expand the network coverage area.And CoMP technology effectively suppress inter-cell interference.Firstly,the importanceof CoMP and technical principles are presented in this paper.Secondly,a LTE-Advanced system-level simulation platform is structed based on the original LTE platform.Finally,a new scheduling algorithm applies to CoMP is proposed and performance analysis is made in the paper.It is concluded that the proposed algorithm for CoMP technology has greatly improved the cell edge user spectral efficiency.
Keywords: LTE-Advanced CoMP SU-MIMO Scheduling algorithm Sector throughput Edge spectrum efficiency
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