ShanghaiTech University Knowledge Management System
Pilot Decontamination via PDP Alignment | |
2016 | |
会议录名称 | 2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)
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发表状态 | 已发表 |
DOI | 10.1109/GLOCOM.2016.7842147 |
摘要 | In this paper, we look into the issue of intra-cell uplink (UL) pilot orthogonalization and schemes for mitigating the inter-cell pilot contamination with a realistic massive multi-input multi-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system model. First, we show how to align the power-delay profiles (PDP) of different users served by one BS so that the pilots sent within one common OFDM symbol are orthogonal. From the derived aligning rule, we see much more users can be sounded in the same OFDM symbol as their channels are sparse in time. Second, in the case of massive MIMO, we show how PDP alignment can help to alleviate the pilot contamination due to inter-cell interference. We demonstrate that, by utilizing the fact that different paths in time are associated with different angles of arrival (AoA), the pilot contamination can be significantly reduced through aligning the PDPs of the users served by different BSs appropriately. Computer simulations further convince us PDP aligning can serve as the new baseline design philosophy for the UL pilots in massive MIMO. |
关键词 | Massive MIMO Pilot Contamination Time-Division Duplexing Power Delay Profile |
出版地 | 345 E 47TH ST, NEW YORK, NY 10017 USA |
会议地点 | Washington, DC, United states |
会议日期 | 4-8 Dec. 2016 |
URL | 查看原文 |
收录类别 | CPCI ; EI |
语种 | 英语 |
资助项目 | Science and Technology Commission Foundation of Shanghai[14511100200] |
WOS研究方向 | Engineering ; Telecommunications |
WOS类目 | Engineering, Electrical & Electronic ; Telecommunications |
WOS记录号 | WOS:000401963304015 |
出版者 | IEEE |
EI入藏号 | 20171203471537 |
EI主题词 | Communication channels (information theory) ; Frequency division multiplexing ; MIMO systems |
EI分类号 | Information Theory and Signal Processing:716.1 |
WOS关键词 | MASSIVE MIMO ; SYSTEMS ; WIRELESS |
原始文献类型 | Proceedings Paper |
来源库 | IEEE |
引用统计 | 正在获取...
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文献类型 | 会议论文 |
条目标识符 | https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1954 |
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 信息科学与技术学院_博士生 |
通讯作者 | Luo, Xiliang |
作者单位 | 1.ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai, Peoples R China 2.Chinese Acad Sci, Shanghai Adv Res Inst, Shanghai, Peoples R China |
第一作者单位 | 信息科学与技术学院 |
通讯作者单位 | 信息科学与技术学院 |
第一作者的第一单位 | 信息科学与技术学院 |
推荐引用方式 GB/T 7714 | Luo, Xiliang,Zhang, Xiaoyu,Qian, Hua,et al. Pilot Decontamination via PDP Alignment[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2016. |
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