黄子菊,
查煜坤,,
王飞跃
安徽大学计算智能与信号处理(教育部)重点实验室 合肥 230601
基金项目:国家自然科学基金(62001001),安徽省自然科学基金(1508085QF125),安徽省高校自然科学研究项目(KJ2016A042),安徽大学科研启动经费(01001770-10117700011)
详细信息
作者简介:智慧:女,1984年生,讲师,研究方向为大规模MIMO、协作通信和无线传感器网络等
黄子菊:女,1994年生,硕士生,研究方向为大规模MIMO、第五代(5G)移动通信系统
查煜坤:男,1996年生,硕士生,研究方向为协作计算、区块链、移动边缘计算,物联网
王飞跃:男,1989年生,硕士生,研究方向为无线中继网络、协作通信、大规模MIMO
通讯作者:查煜坤 zhayukun100@163.com
中图分类号:TN929.5计量
文章访问数:173
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被引次数:0
出版历程
收稿日期:2020-03-20
修回日期:2021-08-24
网络出版日期:2021-09-17
刊出日期:2021-11-23
Two Novel Downlink Precoding Schemes for TDD Massive MIMO Systems
Hui ZHI,Ziju HUANG,
Yukun ZHA,,
Feiyue WANG
Key Laboratory of Computing Intelligent and Signal Processing (Ministry of Education), Anhui University, Hefei 230601, China
Funds:The National Natural Science Foundation of China (62001001), The Natural Science Foundation of Anhui Province (1508085QF125), The College Natural Science Research Project of Anhui Province (KJ2016A042), The Research Start-up Expenses of Anhui University (01001770-10117700011)
摘要
摘要:针对时分双工大规模MIMO系统,该文提出两种新的下行链路预编码方案,即新最大比合并(NMRC)和新迫零(NZF)方案,通过理论分析得到两种新预编码方案下目标用户和非目标用户的下行链路信干噪比和频谱效率的表达式,并与传统的迫零(ZF)和最大比合并(MRC)预编码的下行链路信干噪比、频谱效率和误码率性能进行比较。仿真结果表明,所提出的NMRC和NZF预编码与传统的MRC和ZF预编码相比,在不增加运算复杂度的前提下可以获得更好的性能,而且新的预编码方案在提高目标用户性能的同时,对其他非目标用户的性能也有一定的改善。
关键词:大规模MIMO/
新最大比合并预编码/
新迫零预编码
Abstract:For time-division duplex massive MIMO systems, two new downlink precoding schemes are proposed, namely New Maximum Ratio Combining (NMRC) and New Zero-Forcing (NZF) scheme. Through theoretical analysis, the expressions of downlink signal to interference plus noise ratio and spectral efficiency of target users and non-target users under two new precoding schemes are obtained, and compared with traditional Zero-Forcing (ZF) and Maximum Ratio Combining (MRC) Precoding schemes for downlink signal to interference plus noise ratio, spectrum efficiency and bit error rate performance. The simulation results show that the proposed NMRC and NZF precoding can achieve better performance without increasing the computational complexity compared with the traditional MRC and ZF precoding. Moreover, the new precoding schemes improve the performance of target users while improving the performance of other non-target users.
Key words:Massive MIMO/
New Maximum Ratio Combining (NMRC) precoding/
New Zero-Forcing (NZF) precoding
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