ShanghaiTech University Knowledge Management System
Pilot Contamination in Massive MIMO Induced by Timing and Frequency Errors | |
2018-07 | |
发表期刊 | IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS |
ISSN | 1536-1276 |
卷号 | 17期号:7页码:4477-4492 |
发表状态 | 已发表 |
DOI | 10.1109/TWC.2018.2825982 |
摘要 | Pilot contamination in the uplink (UL) puts asymptotic limits on the downlink (DL) spectral efficiency in time-division duplex (TDD) massive multiple-input multiple-output (MIMO) systems relying on TDD channel reciprocity. Pilot contamination can be induced by the UL pilot reuse across different neighboring cells. In this paper, we show that receiver front-end impairments also contribute to pilot contamination. In particular, we consider a TDD multi-user (MU) massive MIMO orthogonal frequency-division multiplexing (OFDM) system, where either time-division multiplexed (TDM) pilots or frequency-division multiplexed (FDM) pilots are utilized for UL channel sounding. We endeavor to characterize the impacts of the residual timing offsets (TOs) and the carrier frequency offsets (CFOs) on the DL performance of the massive MIMO-OFDM system. Closed-form expressions of the asymptotic DL MU spectral efficiencies are derived in the presence of both TOs and CFOs under different scenarios. Our analytical results reveal how the residual TOs and CFOs destroy the orthogonality among the UL training sequences from different users and give rise to pilot contamination. Specifically, we show that the DL spectral efficiencies become bounded even when the number of antennas goes toward infinity. Furthermore, to alleviate the impacts of TOs and CFOs, we propose different pilot decontamination methods based on our analyses for both the TDM pilots and the FDM pilots. Numerical simulation results corroborate our analyses and designs. |
关键词 | Massive MIMO carrier frequency offset timing offset pilot contamination OFDM |
URL | 查看原文 |
收录类别 | SCI ; SCIE ; EI |
语种 | 英语 |
资助项目 | Shanghai Municipality of Science and Technology Commission Rising-Star Program[17QA1403800] |
WOS研究方向 | Engineering ; Telecommunications |
WOS类目 | Engineering, Electrical & Electronic ; Telecommunications |
WOS记录号 | WOS:000438727700018 |
出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
WOS关键词 | CHANNEL ESTIMATION ; PERFORMANCE ; SYSTEMS ; IMPACT ; SYNCHRONIZATION ; UPLINK |
原始文献类型 | Article |
来源库 | IEEE |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/27394 |
专题 | 信息科学与技术学院 信息科学与技术学院_PI研究组_罗喜良组 |
作者单位 | 1.University of Chinese Academy of Sciences, Beijing, China 2.Chinese Academy of Sciences, Shanghai Advanced Research Institute, Shanghai, China 3.School of Information Science and Technology, ShanghaiTech University, Shanghai, China |
推荐引用方式 GB/T 7714 | Fuqian Yang,Penghao Cai,Hua Qian,et al. Pilot Contamination in Massive MIMO Induced by Timing and Frequency Errors[J]. IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,2018,17(7):4477-4492. |
APA | Fuqian Yang,Penghao Cai,Hua Qian,&Xiliang Luo.(2018).Pilot Contamination in Massive MIMO Induced by Timing and Frequency Errors.IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS,17(7),4477-4492. |
MLA | Fuqian Yang,et al."Pilot Contamination in Massive MIMO Induced by Timing and Frequency Errors".IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS 17.7(2018):4477-4492. |
条目包含的文件 | ||||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 |
修改评论
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。