Security and Energy Harvesting for MIMO-OFDM Networks

Hoang, Tiep M, El Shafie, Ahmed, da Costa, Daniel Benevides, Duong, Trung Q, Tuan, Hoang Duong and Marshall, Alan ORCID: 0000-0002-8058-5242 (2020) Security and Energy Harvesting for MIMO-OFDM Networks IEEE TRANSACTIONS ON COMMUNICATIONS, 68 (4). pp. 2593-2606. ISSN 0090-6778, 1558-0857

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Abstract

We consider a multiple-input multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) network in which a source node, Alice, communicates with an energy-harvesting destination node, Bob, in the presence of a passive eavesdropper. To secure the wireless transmission, Alice generates a hybrid artificial noise (AN) in both frequency and time domains. Moreover, in order to collect more energy, Bob splits the received signal power of the cyclic prefix of each OFDM block. We then propose two non-convex optimization problems to balance both the need for security and the need for harvesting energy at Bob. While one considers maximizing the secrecy rate, the other approach aims at maximizing the harvested energy. Path-following algorithms of low computational complexity are developed and evaluated. Our numerical results show the gain of our proposed scheme and the effectiveness of our proposed algorithms.

Item Type:	Article
Uncontrolled Keywords:	MIMO, OFDM, SWIPT, security, energy harvesting, hybrid artificial noise, path-following algorithms
Depositing User:	Symplectic Admin
Date Deposited:	02 Jan 2020 16:50
Last Modified:	16 Jun 2026 15:32
DOI:	10.1109/TCOMM.2019.2962436
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3068591
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