NDLI: Majority based antenna selection schemes in downlink NOMA network with channel estimation errors and feedback delay

Content Provider	IET Digital Library
Author	Aldababsa, Mahmoud Kucur, Oğuz
Abstract	This paper develops new suboptimal antenna selection (AS) schemes, majority based transmit antenna selection/maximal ratio combining (TAS-maj/MRC) and joint transmit and receive antenna selection (JTRAS-maj), in a multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) network. The impact of the channel estimation errors (CEEs) and feedback delay (FD) on the performance of the network is studied in Nakagami-m fading channels. First, the outage behavior of the network is investigated in a unified manner for the proposed AS schemes by deriving the closed-form expression of the exact outage probability (OP). Next, in the presence of the CEEs and FD, the corresponding upper bound of the OP is obtained. The OP expression in high signal-to-noise ratio region is then provided to illustrate an error floor value in the presence of the CEEs and FD as well as diversity and array gains in the absence of the CEEs and FD. Finally, the analytical results in the presence and absence of the CEEs and FD are verified by the Monte Carlo simulations. The numerical results show that the proposed majority based AS schemes are superior to both max-max-max and max-min-max based AS schemes and the system performance is more sensitive to the CEE than FD.
Starting Page	2931
Ending Page	2943
Page Count	13
ISSN	17518628
Volume Number	14
e-ISSN	17518636
Issue Number	Issue 17, Oct (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-com/14/17
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-com.2019.0937
Journal	IET Communications
Publisher Date	2020-07-30
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Antenna Array Array Gain CEE Channel Estimation Channel Estimation Error Channel Realisations Closed-form Expression Communication Channel Equalisation And Identification Computational Complexity Delay Diversity Reception Downlink NOMA Network Error Floor Value Exact Outage Probability Feedback Feedback Delay High Signal-to-noise Ratio Region Joint Transmit And Receive Antenna Selection JTRAS-maj Scheme Majority Based AS Scheme Majority Based Transmit Antenna Selection-maximal Ratio Combining MIMO Communication Minimax Technique Mobile User Monte Carlo Method Monte Carlo Simulation Method Multi-access System Multiantenna Multiple Access Communication Multiple-input Multiple-output NOMA Network Nakagami Channel Nakagami-m Fading Channel Network Outage Behaviour Nonorthogonal Multiple Access Network OP Expression Optimisation Technique Probability Radio Link And Equipment Receiving Antenna Suboptimal AS Scheme System Performance TAS-maj-MRC Transmitting Antenna
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering Computer Science Applications

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