Achievable Physical-Layer Security Over Composite Fading Channels

Badarneh, Osamah S.; Sofotasios, Paschalis C.; Muhaidat, Sami; Cotton, Simon L.; Rabie, Khaled M.; Al-Dhahir, Naofal

doi:10.1109/access.2020.3033893

Cited by 20 publications

(18 citation statements)

References 49 publications

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“…In [25], the authors presented exact analytic expressions to indicate secure performance such as SOP, average secrecy capacity (ASC), and probability of SPSC along with their insightful asymptotic computations. In addition, a particular case of mixed fading channels (Nakagami-m/Nakagami-m) is studied corresponding to formulas of ASC, SOP and SPSC.…”

Section: A Related Workmentioning

confidence: 99%

Exploiting Secrecy Performance of Uplink NOMA in Cellular Networks

Nguyen

Afghah

et al. 2021

IEEE Access

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We study the secrecy transmission of uplink non-orthogonal multiple access (NOMA) with single antenna and multi-antenna users in presence of an eavesdropper. Two phases are required for communications during each time frame between the users and the base station in cellular networks. We study the case where an eavesdropper overhears the relay and direct links from the users to the base stations. In terms of the secure performance analysis, we focus on two main metrics including secrecy outage probability (SOP) and strictly positive secrecy capacity (SPSC) with the assumption that the eavesdropper is able to detect the signals. Analytical closed-form expressions for the SOP and SPSC are derived to evaluate the system secure performance achieved by the proposed schemes. Furthermore, the asymptotic analysis is presented to gain further insights. The analytical and numerical results indicate that the proposed schemes can realize better secrecy performance once we improve the channel condition and signal-to-noise ratio (SNR) at the base station. Our results confirms that the secrecy performance gaps exist among the two users since different power allocation factors are assigned to these users.INDEX TERMS Physical layer security, non-orthogonal multiple access, secrecy outage probability, strictly positive secrecy capacity.

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Section: A Related Workmentioning

confidence: 99%

Exploiting Secrecy Performance of Uplink NOMA in Cellular Networks

Nguyen

Afghah

et al. 2021

IEEE Access

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“…Compared to the well-known generalized K composite fading model, this model not only provides more tractable and simpler mathematical formulations of the statistical characteristics but also shows a better fit to experimental channel measurements in some emerging wireless communications applications, for example device-to-device communications and wireless body area networks. As a result, a good deal of research work has been done based on the Fisher–Snedecor

composite fading channel model, such as [ 30 , 31 , 32 , 33 , 34 , 35 , 36 , 37 , 38 , 39 , 40 , 41 , 42 ] and references therein. By applying the diversity combining schemes, the authors in [ 34 ] analyzed the performance of the MRC system over independent and non-identically distributed (i.n.i.d.)…”

Section: Introductionmentioning

confidence: 99%

On the Performance Analysis of Switched Diversity Combining Receivers over Fisher–Snedecor ℱ Composite Fading Channels

Cheng

Wang

et al. 2021

Sensors

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In some emerging wireless applications, such as wearable communication and low-power sensor network applications, wireless devices or nodes not only require simple physical implementation approaches but also require certain reliable receiver techniques to overcome the effects of multipath or shadowed fading. Switched diversity combining (SDC) systems could be a simple and promising solution to the above requirements. Recently, a Fisher–Snedecor F composited fading model has gained much interest because of its modeling accuracy and calculation tractability. However, the performance of SDC systems over F fading channels has not yet been analyzed in the open literature. To this end, this paper presents a systematic analysis of SDC systems over F fading channels, including dual-branch switch-and-stay combining (SSC), multibranch switch-and examine combining (SEC), and SEC with post-examining selection (SECps) systems. We first investigate the statistical characteristics of univariate and bivariate F distributions. Then, these statistical expressions are introduced into the above SDC systems and the statistical metrics of the output signal-to-noise ratio (SNR) for these systems are deduced in different F fading scenarios. Thirdly, certain exact and novel expressions of performance criteria, such as the outage probability, the average bit error probability and average symbol error probability, as well as the average channel capacity for SSC, SEC, and SECps are derived. To find the optimum performance, optimal analysis is performed for the independent and identically distributed cases. Finally, numerical evaluation and simulations are carried out to demonstrate the validity of the theoretical analysis under various F fading scenarios. According to the obtained results, the multipath fading parameter has more influence on the performance of SDC systems than the shadowing parameter, the correlation coefficient, or the average SNR. Importantly, the SDC systems can provide switched diversity gains only when the switching threshold is not too large or too small compared to the average SNR.

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“…Additionally, achievable PLS over mixed fading channels, including the F , such as Nakagami-m/F channels, was determined in [16]. In [17], the intercept probability of a randomly distributed eavesdroppers in the N cascaded F wiretap channels, was introduced.…”

Section: Introductionmentioning

confidence: 99%

“…The scheduling framework requires knowledge of the channel state information (CSI) of the main as well as the wiretap channels. This is a commonly exploited assumption in PLS analysis and frequently justified in numerous papers [13,[15][16][17]20,23].…”

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confidence: 98%

“…with B denoting the transmission bandwidth. Following the physical layer security literature [16,17,20,23], the eavesdropper is assumed to have perfect knowledge of legitimate transmissions from and to the sink, including the coding and modulation scheme, encryption algorithm, and secret key, except that the source signal is confidential. This is a common assumption in numerous papers since the eavesdropper could be a legitimate WSN user with restricted access to secrecy data.…”

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confidence: 99%

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Physical Layer Intercept Probability in Wireless Sensor Networks over Fisher–Snedecor \({\mathcal{F}}\) Fading Channels

et al. 2021

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In this paper, we analyze the physical layer security (PLS) of an arbitrarily dimensioned wireless sensor network (WSN) in the presence of an unauthorized attacker. Various scheduling schemes have been exploited in order to enhance the secure transmission of reliable links impaired by Fisher–Snedecor F fading. The path loss among active nodes is also considered. The exact intercept probability expressions are derived recalling an optimal scheduling scheme (OS), a scheduling policy based on a specific cumulative distribution function (CS), and round-robin scheduling as a baseline. The asymptotic behavior of the intercept metric is also presented in a simpler form with acceptable accuracy. The secrecy diversity orders are defined and the security–reliability tradeoff of WSN is specified. Numerical results are provided to demonstrate the interplay of various main/wiretap channel conditions, the distances among nodes, the number of active sensors, and the average main-to-eavesdropper’s signal ratio in order to upgrade the quality of the WSN secrecy performance. Additionally, the impact of the outage probability on the intercept probability is defined for a variety of scenarios under which either the CS or OS scheme could be selected as suitable for PLS enhancement. The obtained results are verified by independent Monte Carlo simulations.

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Achievable Physical-Layer Security Over Composite Fading Channels

Cited by 20 publications

References 49 publications

Exploiting Secrecy Performance of Uplink NOMA in Cellular Networks

Exploiting Secrecy Performance of Uplink NOMA in Cellular Networks

On the Performance Analysis of Switched Diversity Combining Receivers over Fisher–Snedecor ℱ Composite Fading Channels

Physical Layer Intercept Probability in Wireless Sensor Networks over Fisher–Snedecor \({\mathcal{F}}\) Fading Channels

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