Secrecy spectrum and energy efficiency analysis in massive MIMO-enabled multi-tier hybrid HetNets

Umer, A., Hassan, S. A., Pervaiz, H., Musavian, L., Ni, Q. and Imran, M. A. (2019) Secrecy spectrum and energy efficiency analysis in massive MIMO-enabled multi-tier hybrid HetNets. IEEE Transactions on Green Communications and Networking, (doi: 10.1109/TGCN.2019.2956433) (Early Online Publication)

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Abstract

Massive multiple antenna systems in conjunction with millimeter (mmWave) communication have gained tremendous attention in the recent years owing to their high speed data delivery. However, security in these networks has been overlooked; thereby necessitating a comprehensive study. This paper analyzes the physical layer security performance of the downlink of a massive multiple-input multiple-output (MIMO)-based hybrid heterogeneous network (HetNet) where both mmWave and sub-6 GHz small cells coexist. Specifically, a tractable approach using stochastic geometry is proposed to analyze the secrecy outage probability, secrecy energy efficiency (SEE) and secrecy spectrum efficiency (SSE) of the hybrid HetNets. Our study further characterizes the impact of large antenna arrays, directional beamforming gains, transmit power, and cell density on the above mentioned secrecy performance measures. The results show that at low transmit power operation, the secrecy performance enhances for higher small cell density. It has also been observed that the higher directivity gains at mmWave cells lead to a drop in secrecy performance of the network; thus a tradeoff exists between better coverage or secrecy.

Item Type:Articles
Status:Early Online Publication
Refereed:Yes
Glasgow Author(s) Enlighten ID:Imran, Professor Muhammad
Authors: Umer, A., Hassan, S. A., Pervaiz, H., Musavian, L., Ni, Q., and Imran, M. A.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Green Communications and Networking
Publisher:IEEE
ISSN:2473-2400
ISSN (Online):2473-2400
Published Online:28 November 2019
Copyright Holders:Copyright © 2019 IEEE
First Published:First published in IEEE Transactions on Green Communications and Networking 2019
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
300725Distributed Autonomous Resilient Emergency Management System (DARE)Muhammad ImranEngineering and Physical Sciences Research Council (EPSRC)Uncle 12187 - EP/P028764/ENG - Systems Power & Energy