Secrecy Performance Analysis of Multi-Antenna NOMA System with AF/DF relaying under External and Internal Eavesdropping Scenarios

Zaghdoud, Nesrine; Mnaouer, Adel Ben; Alouane, Wided Hadj; Boujemâa, Hatem; Touati, Farid

doi:10.1109/iwcmc48107.2020.9148104

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Additionally, a long short-term memory (LSTM)-based channel prediction approach has been proposed with the aim of mitigating the degrading effects of imperfect CSI due to high mobility conditions [150]. By mentioning the fact that NOMA networks would face substantial security risks due to the distributed nature of the employed SIC mechanism, the investigation in [151], the secrecy performance of a multi-antenna cooperative NOMA scheme has been examined for both DF and AF relaying cases. Here, in addition to the conventional metric i.e., SOP, the authors have also focused on a different performance metric called strictly positive secrecy capacity (SPSC).…”

Section: A Physical Layer Security Of Multiuser Schemesmentioning

confidence: 99%

A Survey on Multiuser SWIPT Communications for 5G+

Özyurt¹,

Coşkun

Büyükçorak

et al. 2022

IEEE Access

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Increasing number of devices connected to the networks, applications and demands of new generation wireless communications cause very high energy consumption resulting in large amount of carbon emission. Thus, energy harvesting solutions together with accomplishing information transmission are required for energy efficient communications of new wireless communications generations such as 5G and 6G (i.e., 5G+). As such, due to the promise of energy efficient green communications, simultaneous wireless information and power transfer (SWIPT) techniques are expected to be indispensable component of 5G+. In this survey, the literature of multiuser SWIPT communications is reviewed for 5G+. Different multiuser SWIPT scenarios including multi-antenna communications, cooperative communications, network coding, communications security, and unmanned aerial vehicle (UAV)-enabled communication systems based on multiuser diversity and multiple access methods are thoroughly reviewed. The experimental studies are also discussed.

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Section: A Physical Layer Security Of Multiuser Schemesmentioning

confidence: 99%

A Survey on Multiuser SWIPT Communications for 5G+

Özyurt¹,

Coşkun

Büyükçorak

et al. 2022

IEEE Access

View full text Add to dashboard Cite

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“…The authors derived closed-form expressions for the outage probability and diversity to show the system performance. In [ 24 ], an AF/DF relay was exploited in a C-NOMA system with two users where these two users were equipped with multiple antennas. The effect of multiple antennas on the performance of the relay was examined also.…”

Section: Introductionmentioning

confidence: 99%

Exploiting User Clustering and Fixed Power Allocation for Multi-Antenna UAV-Assisted IoT Systems

Nguyen

et al. 2023

Sensors

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Internet of Things (IoT) systems cooperative with unmanned aerial vehicles (UAVs) have been put into use for more than ten years, from transportation to military surveillance, and they have been shown to be worthy of inclusion in the next wireless protocols. Therefore, this paper studies user clustering and the fixed power allocation approach by placing multi-antenna UAV-mounted relays for extended coverage areas and achieving improved performance for IoT devices. In particular, the system enables UAV-mounted relays with multiple antennas together with non-orthogonal multiple access (NOMA) to provide a potential way to enhance transmission reliability. We presented two cases of multi-antenna UAVs such as maximum ratio transmission and the best selection to highlight the benefits of the antenna-selections approach with low-cost design. In addition, the base station managed its IoT devices in practical scenarios with and without direct links. For two cases, we derive closed-form expressions of outage probability (OP) and closed-form approximation ergodic capacity (EC) generated for both devices in the main scenario. The outage and ergodic capacity performances in some scenarios are compared to confirm the benefits of the considered system. The number of antennas was found to have a crucial impact on the performances. The simulation results show that the OP for both users strongly decreases when the signal-to-noise ratio (SNR), number of antennas, and fading severity factor of Nakagami-m fading increase. The proposed scheme outperforms the orthogonal multiple access (OMA) scheme in outage performance for two users. The analytical results match Monte Carlo simulations to confirm the exactness of the derived expressions.

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