NDLI: Beamforming design for MISO non-orthogonal multiple access systems

Content Provider	IET Digital Library
Author	Cui, Jingjing Ding, Zhiguo Fan, Pingzhi
Abstract	Non-orthogonal multiple access (NOMA) is a promising multiple access scheme to enhance the spectrum efficiency of fifth generation networks. In this study, the authors study a downlink multiple-input single-output (MISO) system combined with NOMA, where a single beamforming (BF) vector is shared by a group of users. A joint BF and power allocation algorithm is proposed to maximise the sum rate of the users with better channel conditions while guaranteeing the quality of service at the user with poor channel conditions. The formulated problem for sum rate maximisation can be shown as non-deterministic Polynomial-time-hard, and therefore an effective solution based on branch and bound (BB) techniques is proposed. Numerical results are provided to verify that the proposed NOMA-BF system with the BB algorithm improves the sum capacity significantly compared with the NOMA-BF system with zero forcing.
Starting Page	720
Ending Page	725
Page Count	6
ISSN	17518628
Volume Number	11
e-ISSN	17518636
Issue Number	Issue 5, Mar (2017)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/11/5
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2015.0746
Journal	IET Communications
Publisher Date	2016-12-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Array Signal Processing BB Technique Beamforming Design BF Vector Branch And Bound Technique Channel Condition Downlink Multiple-input Single-output System Fifth Generation Network MIMO Communication MISO Nonorthogonal Multiple Access System Multiple Access Scheme NOMA-BF System Power Allocation Algorithm Quality of Service Radio Link And Equipment Signal Processing And Detection Single Beamforming Spectrum Efficiency Wireless Channel Zero Forcing
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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