Secrecy at Physical Layer in NOMA with Cooperative Jamming

Sharma, Shashibhushan; Roy, Sanjay Dhar; Kundu, Sumit

doi:10.1109/ncc48643.2020.9056050

Cited by 12 publications

(6 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is indicative of the system's superiority in terms of security. While the authors in [10] are mainly concerned to enhance the security of confidential information transmission between a source, two destinations, a friendly jammer (FJ), and an eavesdropper (Eve). To thwart Eve's attempts to intercept data, the FJ sends a jamming signal concurrently with the source sending a superimposed signal across both receivers that through NOMA.…”

Section: A Related Workmentioning

confidence: 99%

“…From the literature, it can be affirmed that different type of jamming signals can be employed. For instance, friendly jammer (FJ) signal was employed in [10], while, cooperative jamming signal was used in [22], [27] and artificial-noise (AN) aided jamming signal was employed in [42]- [44] for safeguarding the system's security aspects. The information signal becomes hidden during propagation by radiating the generated noise isotropically.…”

Section: Average Secrecy Sum Rate (Assrmentioning

confidence: 99%

See 1 more Smart Citation

Investigations on Secrecy Performance of Downlink Overlay CR-NOMA System With SIC Imperfections

Godugu,

Vappangi

2024

IEEE Access

View full text Add to dashboard Cite

Cognitive radio (CR) and non-orthogonal multiple access (NOMA) are two technologies witnessed to offer tremendous possibilities for the next generation wireless networks to maximise their usage of available spectrum. In this work, we evaluate the performance of a downlink overlay secure CR-NOMA system while the secondary transmitter (ST) is used as a decode-and-forward (DF) relay to assist the primary transmitter (PT) to transmit information to the destination i.e., primary user (PU), while covertly transmitting its own information to the secondary user (SU) against the eavesdropper (Eve) of PT. The secrecy performance comparison between two users i.e., PU and SU are obtained under perfect and imperfect successive interference cancellation (SIC), respectively. Furthermore, this paper investigates the secrecy performance comparison between the proposed overlay downlink CR-NOMA system comprising of single antenna (SA) and multiple antennas (MA) in terms of various performance metrics such as secrecy sum rate (SSR), the average secrecy rate (ASR), the average secrecy sum rate (ASSR), strictly positive secrecy rate (SPSC) and secrecy outage probability (SOP). It is to be noted that in our proposed system, MAs are equipped at both PT and ST with the main purpose to provide cooperative diversity and we employ both maximal ratio combining (MRC) and selection combining (SC) diversity techniques for processing the received signals at the PU/Eve which further improves the system's capacity and enhances the secrecy performance. In addition, for characterizing the secrecy performance of the proposed overlay CR-NOMA network, we present thoroughly the derivations of novel closed-form analytical expressions of the performance metrics such as SOP, SPSC and the ASR by taking into account both perfect SIC (pSIC) and imperfect SIC (ipSIC) scenarios. Based on the analytical frameworks, the numerical and simulation results are obtained under different network parameters. Towards this end, the outcomes of the simulation are shown to prove both the reliability of the mathematical analysis and the accuracy of the suggested technique.INDEX TERMS Non-orthogonal multiple access, physical layer security, overlay cognitive radio, secrecy rate, average secrecy rate, strictly positive secrecy rate.

show abstract

Section: A Related Workmentioning

confidence: 99%

Section: Average Secrecy Sum Rate (Assrmentioning

confidence: 99%

Investigations on Secrecy Performance of Downlink Overlay CR-NOMA System With SIC Imperfections

Godugu,

Vappangi

2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…The authors in [15] described a jammer-based downlink NOMA system with half-duplex (HD) decode-and-forward (DF) relaying in the absence of direct links between source and end users. In [16], authors took into account a network architecture in which a source uses the NOMA technique to interact with two destination users in the presence of an eavesdropper and a friendly jammer. In [17], a HD-DF relay was employed in a downlink NOMA network and jamming signals were exploited to disrupt the eavesdropping.…”

Section: Introductionmentioning

confidence: 99%

Physical Layer Security of Overlay Cognitive NOMA Systems with Control-Jamming

Yadav

Upadhyay

Lehtomäki

et al. 2022

2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)

View full text Add to dashboard Cite

In this paper, we investigate the physical layer security (PLS) of an overlay cognitive non-orthogonal multiple access (NOMA) system with control-jamming (CJ) under Nakagami-m fading. Herein, a cooperative decode-and-forward (DF) relaying technique is adopted at the secondary transmitter, while a maximal ratio combining (MRC) scheme is employed at the primary destination in order to improve the secrecy performance of the underlying system. Under this setup, we derive analytical expressions for the secrecy outage probability (SOP) and the strictly positive secrecy capacity (SPSC). Moreover, we obtain simple and explicit expressions of the SOP in the high signal-to-noise ratio (SNR) region to get useful insights on the system design for both the cases of without and with jamming. Finally, Monte Carlo simulations are provided to: (i) demonstrate the effectiveness and superiority of the proposed system with jamming over its non-jamming counterpart in terms of security; (ii) verify the accuracy of the proposed analytical framework.

show abstract

“…28 Later, an extension of Jiang et al 28 the secrecy analysis of cooperative NOMA system, is also studied with the aid of cooperative jammer, where power allocation problem is also analyzed. 29,30 From the aforementioned studies, to the best of author's knowledge, it is noticed that the secrecy analysis of cooperative NOMA network with jamming schemes is not deliberated. Motivated by this, in our analysis, a new control jamming (CJ) scheme is proposed for a cooperative NOMA network with DF relaying under total power constraint.…”

Section: Introductionmentioning

confidence: 99%

“…Additionally, to secure the confidential information against eavesdropping and to enhance the secrecy performance further, cooperative jamming technique has been employed for NOMA system 28 . Later, an extension of Jiang et al 28 the secrecy analysis of cooperative NOMA system, is also studied with the aid of cooperative jammer, where power allocation problem is also analyzed 29,30 . From the aforementioned studies, to the best of author's knowledge, it is noticed that the secrecy analysis of cooperative NOMA network with jamming schemes is not deliberated.…”

Section: Introductionmentioning

confidence: 99%

Optimal power allocation‐based novel control jamming scheme for nonorthogonal multiple access enabled decode‐and‐forward relay network

Nayak

Gurrala

2021

Int J Communication

View full text Add to dashboard Cite

In this work, a new control jamming (CJ) scheme has been proposed for a cooperative nonorthogonal multiple access (NOMA) network with optimal power allocation factors by employing decode-and-forward (DF) relay.Maximization of secrecy rate at both NOMA users with the aid of CJ under total transmit power constraint is considered as an optimization problem. In this regard, invasive weed optimization (IWO) algorithm-based approach is proposed to facilitate optimal power allocation for the considered network. In this analysis, performance metric secrecy rate is analyzed with CJ at both NOMA users by varying the location of eavesdropper with respect to the relay and jammer. In addition, the performance of fixed power allocation (FPA) and proposed power allocation (PPA) schemes is investigated with CJ and compared with jamming (J) and without jamming (WJ) conditions. Simulation result analysis specifies that secrecy performance is enhanced remarkably by CJ and PPA outperforms the FPA.

show abstract

Secrecy at Physical Layer in NOMA with Cooperative Jamming

Cited by 12 publications

References 14 publications

Investigations on Secrecy Performance of Downlink Overlay CR-NOMA System With SIC Imperfections

Investigations on Secrecy Performance of Downlink Overlay CR-NOMA System With SIC Imperfections

Physical Layer Security of Overlay Cognitive NOMA Systems with Control-Jamming

Optimal power allocation‐based novel control jamming scheme for nonorthogonal multiple access enabled decode‐and‐forward relay network

Contact Info

Product

Resources

About