Outage Probability Based Power Distribution Between Data and Artificial Noise for Physical Layer Security

Romero-Zurita, Nabil; Ghogho, Mounir; McLernon, Des

doi:10.1109/lsp.2011.2178067

Cited by 120 publications

(84 citation statements)

References 10 publications

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“…To this end, the following subsection will consider the multi-user scheduling without the need of these information. Using (14), the secrecy outage probability of the proposed optimal user scheduling scheme can be obtained as (17) where C s i is given by (8). Combining (9) and (17), we obtain the secrecy outage probability of the optimal scheduling as…”

Section: B Optimal User Schedulingmentioning

confidence: 99%

“…It is noted that the secrecy capacity of wireless communications is limited and degraded due to the multipath fading effect. To this end, considerable research efforts were devoted to improving the wireless physical-layer security by employing the multipleinput multiple-output (MIMO) [12], artificial noise [13], [14] and beamforming techniques [15]- [17]. In addition, the joint artificial noise and beamforming design was investigated in [18] to enhance the wireless physical-layer security, where the artificial noise covariance and beamforming weights were jointly optimized with a target secrecy rate requirement.…”

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confidence: 99%

“…As aforementioned, the physical-layer security is examined extensively for conventional non-cognitive wireless networks [9]- [18], but is rarely studied for cognitive radio networks. The physical-layer security of cognitive transmissions was investigated in [19]- [21] where the achievable secrecy rates of the multiple-input single-output (MISO), MIMO and relay selection were developed for cognitive radio networks.…”

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confidence: 99%

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Secrecy Outage and Diversity Analysis of Cognitive Radio Systems

Zou

Liang

2014

IEEE J. Select. Areas Commun.

159

156

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Abstract-In this paper, we investigate the physical-layer security of a multi-user multi-eavesdropper cognitive radio system, which is composed of multiple cognitive users (CUs) transmitting to a common cognitive base station (CBS), while multiple eavesdroppers may collaborate with each other or perform independently in intercepting the CUs-CBS transmissions, which are called the coordinated and uncoordinated eavesdroppers, respectively. Considering multiple CUs available, we propose the round-robin scheduling as well as the optimal and suboptimal user scheduling schemes for improving the security of CUs-CBS transmissions against eavesdropping attacks. Specifically, the optimal user scheduling is designed by assuming that the channel state information (CSI) of all links from CUs to CBS, to primary user (PU) and to eavesdroppers are available. By contrast, the suboptimal user scheduling only requires the CSI of CUs-CBS links without the PU's and eavesdroppers' CSI. We derive closedform expressions of the secrecy outage probability of these three scheduling schemes in the presence of the coordinated and uncoordinated eavesdroppers. We also carry out the secrecy diversity analysis and show that the round-robin scheduling achieves the diversity order of only one, whereas the optimal and suboptimal scheduling schemes obtain the full secrecy diversity, no matter whether the eavesdroppers collaborate or not. In addition, numerical secrecy outage results demonstrate that for both the coordinated and uncoordinated eavesdroppers, the optimal user scheduling achieves the best security performance and the round-robin scheduling performs the worst. Finally, upon increasing the number of CUs, the secrecy outage probabilities of the optimal and suboptimal user scheduling schemes both improve significantly.Index Terms-Cognitive radio, multi-user scheduling, secrecy outage probability, secrecy diversity, diversity order.

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Section: B Optimal User Schedulingmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Secrecy Outage and Diversity Analysis of Cognitive Radio Systems

Zou

Liang

2014

IEEE J. Select. Areas Commun.

159

156

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“…This indicates that the interference has an important effect for the secrecy performance in such a scenario. Moreover, with the increasing of , the lower bound of the secrecy outage probability is different from the performance of the exact analytical expression in (4). This difference shows that the impact of smallscale fading is considerable in certain regime.…”

Section: Numerical Results and Discussionmentioning

confidence: 88%

“…A significant amount of PLS techniques in wireless networks, such as artificial-noise-aided security [3], security-oriented beamforming [4], cooperation based secure transmission [5], and power control and resource allocation [6], has been developed by researchers. An important information conveyed by [7,8] is that PLS techniques have enormous potential in future 5th-generation (5G) secure communications.…”

Section: Introductionmentioning

confidence: 99%

On Secrecy Outage Probability and Average Secrecy Rate of Large‐Scale Cellular Networks

Tao

Yang

Cai

et al. 2018

Wireless Communications and Mobile Computing

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We investigate the secrecy performance in large-scale cellular networks, where both Base Stations (BSs) and eavesdroppers follow independent and different homogeneous Poisson point processes (PPPs). Based on the distances between the BS and user, the intended user selects the nearest BS as serving BS to transmit the confidential information. We first derive closedformed expressions of secrecy outage probability and average secrecy rate of a single-antenna system for both noncooperative and cooperative eavesdroppers scenarios. Then, to further improve the secrecy performance through additional spatial degrees of freedom, the above analyses generalize to the multiantenna scenario, where BSs employ the transmit antenna selection (TAS) scheme. Finally, the results show the small-scale fading has a considerable effect on the secrecy performance in certain density of eavesdroppers and small path loss exponent environment, and when the interference caused by BS is considered, the secrecy performance will be reduced. Moreover, the gap of secrecy performance between noncooperative and cooperative eavesdroppers cases is nearly invariable as the number of antennas increases.

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Physical layer security for multiuser multi‐eavesdropper multi‐input multi‐output (MIMO) system in the presence of imperfect feedback

Kumar

Chauhan

2020

Int J Communication

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SummaryIn this work, we analyze the physical layer security (PLS) for a multiuser (MUS) multi‐input multi‐output multi‐eavesdropper (MIMOME) wireless network using selection transmission (ST) at the base station (BS) with maximum ratio combining (MRC) at both of the receivers, receivers of legitimate users (LUs) as well as the receivers of illegitimate users over an uncorrelated Rayleigh fading channel. In this scenario, multiple users communicate to a BS at the same time multiple eavesdropper user may intercept the transmission. Next, we drive exact closed‐form expression for probability of nonzero secrecy capacity (PNZSC) and secrecy outage probability (SOP) in the presence of imperfect channel state information (ICSI). At last, we present the simulation results to authenticate the analytical results and analyze the impact of ICSI on PLS of MUS‐MIMOME system.

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Outage Probability Based Power Distribution Between Data and Artificial Noise for Physical Layer Security

Cited by 120 publications

References 10 publications

Secrecy Outage and Diversity Analysis of Cognitive Radio Systems

Secrecy Outage and Diversity Analysis of Cognitive Radio Systems

On Secrecy Outage Probability and Average Secrecy Rate of Large‐Scale Cellular Networks

Physical layer security for multiuser multi‐eavesdropper multi‐input multi‐output (MIMO) system in the presence of imperfect feedback

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