Secrecy performance analysis with relay selection methods under impact of co‐channel interference

Abstract

In this study, the authors evaluate secrecy performance of cooperative protocols with relay selection methods under impact of co-channel interference. In particular, the authors propose an optimal selection scheme to maximise the secrecy capacity obtained at the cooperative phase. In addition, the authors also consider suboptimal and random selection schemes which reduce the complexity of implementation, when compared with the optimal one. For performance evaluation, the authors derive exact and asymptotic closed-form expressions of secrecy outage probability and probability of non-zero secrecy capacity for the considered schemes over Rayleigh fading channels. Monte Carlo simulations are performed to validate the derivations.

Secure Multiple Amplify-and-Forward Relaying With Cochannel Interference

“…We then find that criterion II outperforms criterion III, since the former incorporates different impact from the two hops into the network security. Furthermore, the selection scheme in [28] achieves higher secrecy outage probability than the three selection investigated in this work. This is because that the selection scheme proposed in [28] is a partial relay selection scheme that relies on the second-hop main channel only, for the sake of low complexity.…”

“…Recently, the impact of co-channel interference on the secure communications has received much attention. In [28], the authors studied the PLS of multi-DF relay networks in the presence of co-channel interference, by deriving the analytical and asymptotic SOP expressions. To the best of our knowledge, no prior work has considered the secure communications of multi-AF relay networks, taking into account the impact of co-channel interference and relay selection.…”

Power allocation policy and performance analysis of secure and reliable communication in cognitive radio networks

“…This is reasonable due to the fact that both SU and PU are in the same systems and they should have dedicated feedback channels. In addition, the channel mean gain of the S-Tx!EAV can be selected offline following [42][43][44].…”

Analysis of Probability of Non-zero Secrecy Capacity for Multi-hop Networks in Presence of Hardware Impairments over Nakagami-m Fading Channels

“…In [6] and [7], the authors evaluated the secrecy performances of the relaying networks at the second phase (cooperative phase). In particular, the published work [6] proposed the joint relay and jammer selection methods to enhance the security for secondary networks in underlay cognitive radio.…”

“…In particular, the published work [6] proposed the joint relay and jammer selection methods to enhance the security for secondary networks in underlay cognitive radio. The authors in [7] investigated the impact of co-channel interference on the secrecy performance of various relay selection strategies. In [8] and [9], dual-hop secured communication protocols in one-way and two-way relaying networks were studied, respectively.…”