ShanghaiTech University Knowledge Management System
Achievable Degrees of Freedom of MIMO Multiway Relaying with Pairwise Data Exchange | |
2014 | |
会议录名称 | 2014 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2014)
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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...
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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. |
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