Achievable Degrees of Freedom of MIMO Multiway Relaying with Pairwise Data Exchange

doi:10.1109/GLOCOM.2014.7037052

	Achievable Degrees of Freedom of MIMO Multiway Relaying with Pairwise Data Exchange
	Wang, Rui 1; Yuan, Xiaojun2
	2014
会议录名称	2014 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2014)
页码	1692-1697
发表状态	已发表
DOI	10.1109/GLOCOM.2014.7037052
摘要	We study achievable degrees of freedom (DoF) of a multi-input multi-output (MIMO) multiway relay channel (mRC) where K users, each equipped with M antennas, exchange messages in a pairwise manner with the help of a single N-antenna relay node. A novel and systematic way of designing beamforming vectors and matrices at the user and at the relay is proposed to realize signal alignment and to implement physicallayer network coding (PNC). It is shown that, for the considered mRC with K = 3 users, the proposed beamforming design achieves the DoF capacity for any (M; N) setups. For the scenarios with K > 3, we show that the proposed scheme can be improved by disabling a portion of relay antennas so as to align signals more efficiently. Our analysis reveals that the obtained achievable DoF is always piecewise linear, and is bounded either by the number of user antennas M or by the number of relay antennas N. Asymptotic DoF as K -> infinity is also derived based on the proposed signal alignment scheme.
关键词	Relays MIMO Antennas Vectors Uplink Downlink Spatial databases
出版地	345 E 47TH ST, NEW YORK, NY 10017 USA
会议地点	Austin, TX
会议日期	8-12 Dec. 2014
URL	查看原文
收录类别	CPCI ; EI
语种	英语
WOS研究方向	Computer Science ; Engineering ; Telecommunications
WOS类目	Computer Science, Theory & Methods ; Engineering, Electrical & Electronic ; Telecommunications
WOS记录号	WOS:000376235500143
出版者	IEEE
EI入藏号	20151100632654
EI主题词	Antennas ; Beamforming ; Degrees of freedom (mechanics) ; Electronic data interchange ; Mechanics ; MIMO systems ; Network layers ; Piecewise linear techniques ; Television antennas
EI分类号	Electronic Circuits:713 ; Telecommunication; Radar, Radio and Television:716 ; Computer Software, Data Handling and Applications:723 ; Data Processing and Image Processing:723.2 ; Automatic Control Principles and Applications:731 ; Control Systems:731.1 ; Control Devices:732 ; Mechanics:931.1 ; Systems Science:961
WOS关键词	CHANNEL
原始文献类型	Proceedings Paper
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/2426
专题	信息科学与技术学院_PI研究组_袁晓军组
通讯作者	Wang, Rui
作者单位	1.Chinese Univ Hong Kong, Inst Network Coding, Hong Kong, Hong Kong, Peoples R China 2.ShanghaiTech Univ, Sch Informat Sci & Technol, Shanghai 200031, Peoples R China
推荐引用方式 GB/T 7714	Wang, Rui,Yuan, Xiaojun. Achievable Degrees of Freedom of MIMO Multiway Relaying with Pairwise Data Exchange[C]. 345 E 47TH ST, NEW YORK, NY 10017 USA:IEEE,2014:1692-1697.