Physical-layer secrecy outage of spectrum sharing CR systems over fading channels

Abstract

In this paper, we investigate the physical-layer secrecy outage performance of underlay spectrum sharing systems over Rayleigh and log-normal fading channels in the presence of one eavesdropper. In particular, the secondary transmitter sends data to the legitimate receiver under the constraints of the interference temperature at the primary receiver, while suffering the wiretap from the eavesdropper. Closed-form and approximated expressions are derived for the secrecy outage probability over Rayleigh and log-normal fading channels, respectively. The accuracy of our performance analysis is verified by simulation results.

Secure transmission using optimal antenna selection for MIMO underlay CRN with multiple primary users

“…The secure performance of Wyner's wiretap model, where the main and eavesdropper channels are modelled by fading and expressions of the average secrecy capacity and secrecy outage probability (SOP) were investigated in [9]. The physical layer security of underlay CRN over Rayleigh and log‐normal fading channels in the presence of one Eve was analysed, and expressions for SOP was derived in [10]. Pei et al addressed the physical‐layer security issue from an information‐theoretic perspective and characterised the secrecy capacity [11].…”

Secrecy analysis of cognitive radio network with MS-GSC/MRC scheme

“…In [12,13], secrecy performance of single input multiple output (SIMO) CRN with maximal ratio combining (MRC) diversity technique was studied. Secrecy outage probability (SOP) for transmit antenna selection (TAS)/MRC in multiple input multiple output (MIMO) CRN has been investigated in [14], and an underlay MIMO CRN with a pair of primary nodes and secondary nodes and an eavesdropper was considered in [15] where the secondary transmitter was powered by the renewable energy harvested from the primary transmitter in order to improve both energy efficiency and spectral efficiency.…”