Pilot Decontamination with Directional Doppler PSD in Massive MIMO

doi:10.1109/ICCS.2018.8689176

	Pilot Decontamination with Directional Doppler PSD in Massive MIMO
	Zhang, Xiaoyu; Zhu, Hanyu; Luo, Xiliang
	2018
会议录名称	PROCEEDINGS OF 2018 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATION SYSTEMS (ICCS 2018)
页码	83-88
发表状态	已发表
DOI	10.1109/ICCS.2018.8689176
摘要	Pilot contamination mitigation in the uplink (UL) is an important problem to tackle in massive multiple-input multiple-output (MIMO). Existing researches only relied on the angle of arrival knowledge at the base station (BS). In this paper, we propose an enhanced pilot decontamination strategy using the angle of departure information at the user side. Since this information is contained in the Doppler power spectrum density (PSD), we first analyze the directional Doppler PSD (D-PSD) at a particular angle impinging on the BS. A closed-form expression of the D-PSD for an arbitrary angle distribution at the user side is provided and the spatial-wideband effect caused by the large number of antennas is also considered. We then present a method to mitigate the pilot contamination by exploiting the D-PSD. We further verify its effectiveness in offering more orthogonal pilots and reducing channel estimation errors compared with our previous works. Simulations show the proposed scheme can serve as one additional decontamination mechanism for the UL pilots in massive MIMO.
关键词	Massive MIMO pilot decontamination time-division duplexing power spectrum density (PSD) Doppler
会议地点	Chengdu, China
会议日期	19-21 Dec. 2018
URL	查看原文
收录类别	EI ; CPCI-S ; CPCI
语种	英语
WOS研究方向	Engineering ; Telecommunications
WOS类目	Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000470696100016
出版者	IEEE
EI入藏号	20191906869097
EI主题词	MIMO systems ; Power spectrum
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/29705
专题	信息科学与技术学院_博士生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_硕士生
通讯作者	Zhang, Xiaoyu
作者单位	ShanghaiTech Univ, Sch Informat Sci & Technol, 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	Zhang, Xiaoyu,Zhu, Hanyu,Luo, Xiliang. Pilot Decontamination with Directional Doppler PSD in Massive MIMO[C]:IEEE,2018:83-88.