[1]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),2015,39(01):94-101.
 Yu Xiangzhen.Multiuser scheduling and Tomlinson-Harashima precoding scheme for multiuser MIMO downlink systems[J].Journal of Nanjing University of Science and Technology,2015,39(01):94-101.
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一种多用户MIMO下行系统中 TH预编码与调度机制
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《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

卷:
39卷
期数:
2015年01期
页码:
94-101
栏目:
出版日期:
2015-02-28

文章信息/Info

Title:
Multiuser scheduling and Tomlinson-Harashima precoding scheme for multiuser MIMO downlink systems
作者:
于湘珍
武警工程大学 信息工程系,陕西 西安 710086
Author(s):
Yu Xiangzhen
Department of Message Engineerng,Engineering University of Armed Police Force,Xi'an 710086,China
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
Keywords:
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
分类号:
TN911; TN957; TN919.3
摘要:
针对多用户多输入多输出(Multi-input multi-output,MIMO)系统潜在的空间分集增益和多用户分集增益,该文提出了一种移动端多天线联合处理的Tomlinson-Harashima(TH)预编码和多用户调度算法联合优化机制。与传统TH预编码不同的是,所提出的TH预编码方案可应用在各用户数据流小于其接收天线数的场合,在进行系统最优设计时,可充分利用多天线接收分集来提高系统和速率。基于TH预编码方案的最优多用户调度算法具有很高的运算复杂度,提出了一种基于等效信道增益的次优低复杂度的多用户调度
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.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2014-10-12 修回日期:2015-01-09
作者简介:于湘珍(1959-),女,高级实验师,主要研究方向:计算机应用、网络通信技术、电子技术,E-mail:yuxiangzhen123456@163.com。
引文格式: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,2015,39(1):94-101.
投稿网址:http://zrxuebao.njust.edu.cn
更新日期/Last Update: 2015-02-28