Pilot Decontamination via PDP Alignment

doi:10.1109/GLOCOM.2016.7842147

	Pilot Decontamination via PDP Alignment
	Luo, Xiliang1 ; Zhang, Xiaoyu1 ; Qian, Hua 2; Kang, Kai 2
	2016
会议录名称	2016 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM)
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...
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.