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Physical layer security of underlay cognitive radio using maximal ratio combining

Lookup NU author(s): Chaoqing Tang


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We investigate the secrecy outage performance of maximal ratio combining (MRC) in cognitive radio networks over Rayleigh fading channels. In a single-input multiple-output wiretap system, we consider a secondary user (SU-TX) that transmits confidential messages to another secondary user (SU-RX) equipped with M (M aeyen 1) antennas where the MRC technique is adopted to improve its received signal-to-noise ratio. Meanwhile, an eavesdropper equipped with N (N aeyen 1) antennas adopts the MRC scheme to overhear the information between SU-TX and SU-RX. SU-TX adopts the underlay strategy to guarantee the service quality of the primary user without spectrum sensing. We derive the closed-form expressions for an exact and asymptotic secrecy outage probability.

Publication metadata

Author(s): Zhao H, Wang DY, Tang CQ, Liu YP, Pan GF, Li TT, Chen YF

Publication type: Article

Publication status: Published

Journal: Frontiers of Information Technology & Electronic Engineering

Year: 2016

Volume: 17

Issue: 9

Pages: 929-937

Print publication date: 01/09/2016

Online publication date: 07/10/2016

Acceptance date: 16/02/2016

ISSN (print): 2095-9184

ISSN (electronic): 2095-9230

Publisher: Zheijiang University Press


DOI: 10.1631/FITEE.1500351


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Funder referenceFunder name
20130182120017Research Fund for the Doctoral Program of Higher Education of China
61401372National Natural Science Foundation of China
61531016National Natural Science Foundation of China
cstc2013jcyjA40040Natural Science Foundation of CQ CSTC
XDJK2015B023Fundamental Research Funds for the Central Universities, China