南京理工大学学报（自然科学版）Issue(1)：94-101,8.DOI:10.14177/j.cnki.32-1397n.2015.39.01.016
一种多用户MIMO下行系统中TH预编码与调度机制
Multiuser scheduling and Tomlinson-Harashima precoding scheme for multiuser MIMO downlink systems
于湘珍1
作者信息
- 1. 武警工程大学 信息工程系，陕西 西安710086
- 折叠
摘要
Abstract
In order to exploit spatial multiplexing gain and multiuser diversity gain for multiuser multi-input multi-output( MIMO) system,a joint optimization of both Tomlinson-Harashima precoding (THP)scheme and multiuser scheduling algorithm is proposed. Unlike traditional THP scheme,the proposed THP scheme can be applied to the case where the number of data streams are less that of receive antennas for each user, which can greatly improve the system sum rate by exploiting the multi-antenna receiving diversity of multiuser MIMO systems. Because the optimal scheduling algorithm for the multiuser MIMO system with the proposed THP scheme has very high computational complexity,a suboptimal scheduling algorithm with low computational complexity is proposed,which greedily schedules users by utilizing the layered precoding. Simulation results demonstrate that the performance of the proposed scheduling is near to that of the optimal scheduling scheme, and outperforms that of the traditional scheduling scheme.关键词
多天线技术/多用户多输入多输出/多用户调度/Tomlinson-Harashima预编码/空间分集增益/多用户分集增益/分层编码/下行系统Key words
multi-antenna technology/multiuser multi-input multi-output/multiuser scheduling/Tomlinson-Harashima precoding/spatial multiplexing gain/multiuser diversity gain for multiuser/layered precoding/downlink systems分类
信息技术与安全科学引用本文复制引用
于湘珍..一种多用户MIMO下行系统中TH预编码与调度机制[J].南京理工大学学报（自然科学版）,2015,(1):94-101,8.
