[1]王军[],戴建新[],程崇虎[],等. 一种基于相位噪声的大规模MIMO预编码算法[J].计算机技术与发展,2017,27(03):103-107.
　WANG Jun[],DAI Jian-xin[],CHENG Chong-hu[],et al. A Linear Pre-coding Algorithm Based on Phase Noise in Massive MIMO[J].,2017,27(03):103-107.
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 一种基于相位噪声的大规模MIMO预编码算法()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2017年03期
页码:
103-107
栏目:
智能、算法、系统工程
出版日期:
2017-03-10

文章信息/Info

Title:
 A Linear Pre-coding Algorithm Based on Phase Noise in Massive MIMO
文章编号:
1673-629X（2017)03-0103-05
作者:
 王军[1] ; 戴建新[2] ; 程崇虎[1] ; 汪鹏[1] ; 李莎[1]
1. 南京邮电大学 通信与信息工程学院；2.南京邮电大学 理学院
Author(s):
 WANG Jun[1] ; DAI Jian-xin[2];  CHENG Chong-hu[1] ; WANG Peng[1] ; LI Sha[1]
关键词:
 ; 大规模MIMO; 相位噪声; 预编码算法; CSI估计; 振荡器
Keywords:
 ; large scale MIMO; phase noise; pre-coding algorithm; CSI estimation; oscillator
分类号:
TN929.5
文献标志码:
A
摘要:
 在大规模MIMO系统中,使用廉价的硬件会带来一些问题,本地振荡器引起的相位噪声就是其中之一.相位噪声会影响到基站侧对CSI的估计,使得在信号发送过程中的CSI不同于估计的CSI,然而预编码矩阵的设计依赖于CSI,最终影响到基站侧对信号的处理导致系统性能的下降.针对大规模MIMO系统中存在的廉价的本地振荡器引起的相位噪声这一问题,通过分析其对信号以及CSI的影响,提出一种基于相位噪声的预编码算法.通过仿真结果得出,当基站侧不存在相位噪声时,提出算法和传统预编码算法有着相同的性能.但是当基站侧存在相位噪声时,提出算法优于传统预编码算法.从而可以得出结论,当基站侧存在相位噪声时,提出算法一定程度上降低了其对系统的影响程度.
Abstract:
 In large scale MIMO system,the phase noise caused by local oscillator is one of the problems because of the use of cheap hard-ware. Phase noise will affect the estimation of CSI,which is different from the CSI of the process of sending signal. However,the design of pre-coding matrix is dependent on CSI and ultimately affects the signal processing from the base station side which leads to a decline in the performance of the system. Due to phase noise by cheap local oscillator in massive MIMO system,a pre-coding matrix is proposed by anglicizing the influence of phase noise on signal. The simulation results show that the proposed algorithm has the same performance as the traditional pre-coding algorithm when there is no phase noise in the base station. But when phase noise exists in the base station, the proposed algorithm is better than the traditional algorithm. So it can be concluded that the proposed algorithm can reduce the impact of the system to a certain extent when the phase noise exists in the base station.

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更新日期/Last Update: 2017-05-18