[1]禹永植,张未坤,郜丽鹏.多用户MIMO中继系统包含直传链路的联合预编码[J].哈尔滨工程大学学报,2019,40(04):827-833.[doi:10.11990/jheu.201708044]
 YU Yongzhi,ZHANG Weikun,GAO Lipeng.Joint precoding for multi-user MIMO relay system with direct links[J].hebgcdxxb,2019,40(04):827-833.[doi:10.11990/jheu.201708044]
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多用户MIMO中继系统包含直传链路的联合预编码(/HTML)
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《哈尔滨工程大学学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
40
期数:
2019年04期
页码:
827-833
栏目:
出版日期:
2019-04-05

文章信息/Info

Title:
Joint precoding for multi-user MIMO relay system with direct links
作者:
禹永植 张未坤 郜丽鹏
哈尔滨工程大学 信息与通信工程学院, 黑龙江 哈尔滨 150001
Author(s):
YU Yongzhi ZHANG Weikun GAO Lipeng
College of Information and Communication Engineering, Harbin Engineering University, Harbin 150001, China
关键词:
发射/接收端多用户直传链路SMSEBERK.K.T条件SDP问题
分类号:
TN929.5
DOI:
10.11990/jheu.201708044
文献标志码:
A
摘要:
针对现有的联合预编码算法忽略多用户之间的直传链路而导致通信性能下降的问题,本文以最小和均方误差为设计准则,提出了一种发射端的所有用户集中优化的联合预编码算法。首先,由于MSMSE优化问题的非凸性,将单流信号输入的多用户等效为一个多流信号输入的基站进行优化处理,其中基站的预编码矩阵由所有发射端的用户的子预编码矩阵构成,原非凸的MSMSE优化问题被转化为发射端用户的子预编码矩阵和中继收发矩阵2个子优化问题分别进行处理。其次,根据最小均方误差接收滤波理论,直接求解出接收滤波矩阵的优化表达式。发射端用户的子预编码矩阵的子优化问题通过求解条件获得,中继收发矩阵的子优化问题被转化成一个标准的半正定问题进行优化处理。最后,发射端用户的子预编码矩阵、中继收发矩阵和接收滤波矩阵联合迭代至收敛,得到优化后的预编码矩阵。实验仿真结果表明:提出的联合预编码算法在系统和均方误差性能和误码率性能上都有明显的提升,并且仿真进一步验证了算法有快速的收敛速度。

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2017-08-18。
基金项目:国家自然科学基金项目(61571146).
作者简介:禹永植,男,讲师,博士;郜丽鹏,男,教授,博士.
通讯作者:禹永植,E-mail:yuyongzhi@hrbeu.edu.cn
更新日期/Last Update: 2019-04-03