eprintid: 3995
rev_number: 15
eprint_status: archive
userid: 295
dir: disk0/00/00/39/95
datestamp: 2020-07-10 15:05:06
lastmod: 2020-12-21 09:36:15
status_changed: 2020-12-21 09:36:15
type: article
metadata_visibility: show
creators_name: Quach, Xuan Truong
creators_name: Tran, Hung
creators_name: Uhlemann, Elisabeth
creators_name: Tran, Truc Mai
creators_id: qxtruong@ictu.edu.vn
creators_id: tran.hung@mdh.se
creators_id: elisabeth.uhlemann@mdh.se
creators_id: mai.tran@vnu.edu.vn
title: Secrecy Performance of Cooperative Cognitive
Radio Networks Under Joint Secrecy Outage and
Primary User Interference Constraints
ispublished: pub
subjects: IT
subjects: Scopus
subjects: isi
divisions: fac_fit
abstract: In this paper, we investigate the secrecy performance of a Cooperative Cognitive Radio
Network (CCRN) in the presence of an eavesdropper (EAV). The secondary users (SUs) are subject to three
constraints which include peak transmit power level and interference limitation with respect to the primary
user (PU) as well as secrecy outage constraints due to the EAV. Secrecy outage is achieved when the EAV
cannot decode the targeted signal, but communications in the secondary network is still possible (non-zero
capacity exists). Approximation expressions of the secrecy outage probability and the probability of non-zero
secrecy capacity are derived to evaluate the secrecy performance. Monte Carlo simulations are provided to
examine the accuracy of the derived approximation expressions. Based on this, power allocation policies
for the SUs are derived, satisfying all the constraints while maximizing the secrecy performance as well as
the quality of service performance of the secondary network. It can be concluded that with knowledge of
the channel state information (CSI) of the EAV it is possible to calculate the optimal value for the secrecy
outage threshold of the secondary user (SU) which in turn allows maximizing the secrecy performance. Most
interestingly, our numerical results illustrate that the secrecy performance of the system is much improved
when the parameters obtained using the CSI of the EAV are calculated optimally. Thence, the system can
adjust the power allocation so that no eavesdropping occurs even without reducing quality of service (QoS)
performance compared to a network without any EAV.
date: 2020
id_number: 19347467
full_text_status: public
publication: IEEE Access
volume: 8
pagerange: 18442 -18442
refereed: TRUE
issn: ISSN: 2169-3536
related_url_url: https://ieeexplore.ieee.org/document/8964376
related_url_type: pub
citation:   Quach, Xuan Truong and Tran, Hung and Uhlemann, Elisabeth and Tran, Truc Mai  (2020) Secrecy Performance of Cooperative Cognitive Radio Networks Under Joint Secrecy Outage and Primary User Interference Constraints.  IEEE Access, 8 .   18442 -18442.  ISSN ISSN: 2169-3536     
document_url: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/3995/1/08964376.pdf