MIMO Multipair Two-Way Relaying With Distributed Relays: Joint Signal Alignment and Interference Neutralization

doi:10.1109/TIT.2016.2519028

	MIMO Multipair Two-Way Relaying With Distributed Relays: Joint Signal Alignment and Interference Neutralization
	Rui Wang 1; Xiaojun Yuan2 ; Raymond W. Yeung 3
	2016-03
发表期刊	IEEE TRANSACTIONS ON INFORMATION THEORY (IF:2.2[JCR-2023],2.4[5-Year])
ISSN	0018-9448
卷号	62 期号:3 页码:1326-1343
发表状态	已发表
DOI	10.1109/TIT.2016.2519028
摘要	We study the degrees of freedom (DoFs) of the multiple input multiple output (MIMO) multipair two-way distributed relay channel (mTDRC), where K pairs of users, each equipped with M antennas, exchange messages in a pairwise manner with the help of two geographically separated relay nodes, each with N antennas. We establish a general framework for the DoF analysis by combining the ideas of signal space alignment and interference neutralization. The proposed framework involves a joint design of user transmit beamformers, relay precoders, and user receive beamformers. Novel signal alignment techniques are proposed to reduce the number of linearly independent constraints for interference neutralization. Based on that, the original joint transceiver and relay design problem boils down to a problem solely on the design of the relay precoders. This problem is then solved utilizing recent development on the solvability of linear matrix equations. As a result, we derive an achievable DoF for the MIMO mTDRC with an arbitrary configuration of (K, M, N). For K = 2, the optimal DoF of the considered network is derived for (M/N) is an element of (0, 1/2) boolean OR (1,infinity) by showing that the obtained achievable DoF meets a DoF upper bound. This result beats the state of the art by establishing the optimal DoF of the considered network in an extra range of (M/N) is an element of (1, 2). In addition, the achievable DoF obtained for K = 2 is much higher than the existing result in the range of (M/N) is an element of (11/16, 1). Furthermore, we show that the optimal DoF of the considered network with K >= 3 is derived for (M/N) is an element of (0, (2K + root 2K)/(4K(2) - 2K)) boolean OR (3/2, infinity).
关键词	Multi-input multi-output (MIMO) multipair two-way relay channel signal space alignment interference neutralization degrees of freedom
URL	查看原文
收录类别	SCI ; EI
语种	英语
资助项目	Peacock Scheme, Shenzhen, China[KQCX20130628164008004]
WOS研究方向	Computer Science ; Engineering
WOS类目	Computer Science, Information Systems ; Engineering, Electrical & Electronic
WOS记录号	WOS:000370954900017
出版者	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
EI入藏号	20161402195635
EI主题词	Antennas ; Beamforming ; Channel coding ; Communication channels (information theory) ; Degrees of freedom (mechanics) ; Electric relays ; Interference suppression ; Matrix algebra ; Mechanics ; MIMO systems ; Radio transceivers
EI分类号	Electric Components:704.1 ; Electromagnetic Waves in Relation to Various Structures:711.2 ; Information Theory and Signal Processing:716.1 ; Radio Systems and Equipment:716.3 ; Algebra:921.1 ; Mechanics:931.1
WOS关键词	FREEDOM ; CHANNEL
原始文献类型	Article
来源库	IEEE
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/1917
专题	信息科学与技术学院信息科学与技术学院_PI研究组_袁晓军组
作者单位	1.Department of Information and Communications, Tongji University, Shanghai, China 2.School of Information Science and Technology, ShanghaiTech University, Shanghai, China 3.Department of Information Engineering, The Chinese University of Hong Kong
推荐引用方式 GB/T 7714	Rui Wang,Xiaojun Yuan,Raymond W. Yeung. MIMO Multipair Two-Way Relaying With Distributed Relays: Joint Signal Alignment and Interference Neutralization[J]. IEEE TRANSACTIONS ON INFORMATION THEORY,2016,62(3):1326-1343.
APA	Rui Wang,Xiaojun Yuan,&Raymond W. Yeung.(2016).MIMO Multipair Two-Way Relaying With Distributed Relays: Joint Signal Alignment and Interference Neutralization.IEEE TRANSACTIONS ON INFORMATION THEORY,62(3),1326-1343.
MLA	Rui Wang,et al."MIMO Multipair Two-Way Relaying With Distributed Relays: Joint Signal Alignment and Interference Neutralization".IEEE TRANSACTIONS ON INFORMATION THEORY 62.3(2016):1326-1343.