eprintid: 10054691
rev_number: 20
eprint_status: archive
userid: 608
dir: disk0/10/05/46/91
datestamp: 2018-08-24 11:25:19
lastmod: 2021-10-15 22:41:11
status_changed: 2018-08-24 11:25:19
type: article
metadata_visibility: show
creators_name: Tang, J
creators_name: Dai, T
creators_name: Cui, M
creators_name: Zhang, X
creators_name: Shojaeifard, A
creators_name: Wong, KK
creators_name: Li, Z
title: Optimization for Maximizing Sum Secrecy Rate in SWIPT-enabled NOMA Systems
ispublished: pub
divisions: UCL
divisions: B04
divisions: C05
divisions: F46
keywords: NOMA,
Erbium,
Resource management,
Wireless communication,
Downlink,
Receivers,
Communication system security
note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
abstract: OAPA In this paper, we study secrecy simultaneous wireless information and power transfer (SWIPT) in downlink nonorthogonal multiple access (NOMA) systems comprising a base station (BS), multiple information receivers (IRs), and multiple energy receivers (ERs) that have potential to wiretap the IRs. The goal of this paper is to maximize the sum secrecy rate (SSR) of the system subject to the individual IR’s minimum data rate requirement and the individual ER’s minimum harvested energy requirement. The corresponding problem involves resource allocation via max-min function, which is non-convex and difficult to solve directly. In order to tackle this, we first transform the original non-convex problem to a sequence of convex subproblems which can be solved simultaneously. Hence, a closedform solution of the optimal power allocation policy is derived based on the Karush-Kuhn-Tucker (KKT) conditions. Numerical results validate the theoretical findings and demonstrate that significant performance gain over the orthogonal multiple access (OMA) scheme in terms of SSR can be achieved by the proposed algorithm in a SWIPT-enabled NOMA system.
date: 2018-07-26
date_type: published
official_url: http://dx.doi.org/10.1109/ACCESS.2018.2859935
oa_status: green
full_text_type: pub
language: eng
primo: open
primo_central: open_green
article_type_text: Article in Press
verified: verified_manual
elements_id: 1576823
doi: 10.1109/ACCESS.2018.2859935
lyricists_name: Shojaeifard, Arman
lyricists_name: Wong, Kai-Kit
lyricists_id: ASHOJ33
lyricists_id: KWONG98
actors_name: Sharp, Catherine
actors_id: CLSHA04
actors_role: owner
full_text_status: public
publication: IEEE Access
volume: 6
pagerange: 43440-43449
issn: 2169-3536
citation:        Tang, J;    Dai, T;    Cui, M;    Zhang, X;    Shojaeifard, A;    Wong, KK;    Li, Z;      (2018)    Optimization for Maximizing Sum Secrecy Rate in SWIPT-enabled NOMA Systems.                   IEEE Access , 6    pp. 43440-43449.    10.1109/ACCESS.2018.2859935 <https://doi.org/10.1109/ACCESS.2018.2859935>.       Green open access   
 
document_url: https://discovery.ucl.ac.uk/id/eprint/10054691/1/08421218.pdf