Half-ZF beamforming scheme for downlink two-user multiple input single   output-based non-orthogonal multiple access systems

doi:10.1049/iet-com.2017.0018

CORC > 北京大学 > 信息科学技术学院

	Half-ZF beamforming scheme for downlink two-user multiple input single output-based non-orthogonal multiple access systems
	Cai, Wenbo ; Lv, Guocheng ; Jin, Ye
刊名	IET COMMUNICATIONS
	2017
关键词	multi-access systems array signal processing vectors cellular radio interference suppression power consumption half-ZF beamforming scheme downlink two-user multiple input single output-based NOMA power consumption minimisation interference mitigation zero-forcing scheme cell-interior user cell-edge user SIC technology closed-form expression BF vectors quasi-degradation scheme QD scheme nonorthogonal multiple access systems successive interference cancellation technolo
DOI	10.1049/iet-com.2017.0018
英文摘要	The authors investigate the beamforming (BF) problem to minimise the power consumption for the downlink 2-user multiple input single output-based non-orthogonal multiple access system. Inspired from the conventional zero-forcing (ZF) scheme, they propose the Half-ZF scheme which only mitigates the interference introduced by the signal of the cell-interior user through the ZF method. Meanwhile, the interference introduced by the signal of the cell-edge user is removed through the SIC technology. We derive the closed-form expression for the BF vectors of the two users under the Half-ZF scheme. The optimal power consumption for the Half-ZF scheme is analysed and the corresponding solution of the BF factors are also obtained. Compared with the conventional ZF scheme, both the Half-ZF scheme and the existing quasi-degradation (QD) scheme can achieve lower power consumption than the ZF scheme. However, the Half-ZF scheme can achieve this advantage under more relaxed conditions. Consequently, the Half-ZF scheme consumes lower power than the QD scheme when combined with the ZF scheme in practical systems.; SCI(E); ARTICLE; 10; 1633-1640; 11
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/472154]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Cai, Wenbo,Lv, Guocheng,Jin, Ye. Half-ZF beamforming scheme for downlink two-user multiple input single output-based non-orthogonal multiple access systems[J]. IET COMMUNICATIONS,2017.
APA	Cai, Wenbo,Lv, Guocheng,&Jin, Ye.(2017).Half-ZF beamforming scheme for downlink two-user multiple input single output-based non-orthogonal multiple access systems.IET COMMUNICATIONS.
MLA	Cai, Wenbo,et al."Half-ZF beamforming scheme for downlink two-user multiple input single output-based non-orthogonal multiple access systems".IET COMMUNICATIONS (2017).