Secrecy Performance of NOMA Systems With Energy Harvesting and Full-Duplex Relaying

Cheng, Guo; Zhao, Liqiang; Feng, Chen; Ding, Zhiguo; Wang, Huiming

doi:10.1109/tvt.2020.3008715

Cited by 25 publications

(7 citation statements)

References 10 publications

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“…Therefore, in this paper, we consider only two downlink NOMA users. Similar assumptions were considered in [7]- [9]. However, our analysis can be extended to multiple downlink NOMA users by adopting the user pairing scheme proposed in [9].…”

Section: System Modelmentioning

confidence: 96%

“…The secrecy outage probability (SOP) analysis of a multiplerelay-assisted two-user downlink NOMA system was presented in [7], where the authors proposed different relay selection schemes to enhance the secrecy performance of the system. The ergodic sum secrecy rate (ESSR) analysis of a two-user downlink and uplink cooperative NOMA system with untrusted relaying was performed in [8], while the authors in [9] presented the ergodic secrecy rate (ESR) and SOP analysis of a full-duplex relay-assisted two-user downlink NOMA system with energy harvesting.…”

Section: Introductionmentioning

confidence: 99%

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On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

Kumar¹,

Flanagan²,

Costa³

et al. 2021

Preprint

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In this paper, we present the ergodic sum secrecy rate (ESSR) analysis of an underlay spectrum sharing nonorthogonal multiple access (NOMA) system. We consider the scenario where the power transmitted by the secondary transmitter (ST) is constrained by the peak tolerable interference at multiple primary receivers (PRs) as well as the maximum transmit power of the ST. The effect of channel estimation error is also taken into account in our analysis. We derive exact and asymptotic closedform expressions for the ESSR of the downlink NOMA system, and show that the performance can be classified into two distinct regimes, i.e., it is dictated either by the interference constraint or by the power constraint. Our results confirm the superiority of the NOMA-based system over its orthogonal multiple access (OMA) based counterpart. More interestingly, our results show that NOMA helps in maintaining the secrecy rate of the strong user while significantly enhancing the secrecy performance of the weak user as compared to OMA. The correctness of the proposed investigation is corroborated through Monte Carlo simulation.

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Section: System Modelmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

Kumar¹,

Flanagan²,

Costa³

et al. 2021

Preprint

View full text Add to dashboard Cite

show abstract

“…Similar assumptions were considered in [7]- [9]. However, our analysis can be extended to multiple downlink NOMA users by adopting the user pairing scheme proposed in [9]. exponent.…”

Section: System Modelmentioning

confidence: 96%

On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

Kumar¹,

Flanagan²,

Costa³

et al. 2021

Preprint

View full text Add to dashboard Cite

<div>In this paper, we present the ergodic sum secrecy rate (ESSR) analysis of an underlay spectrum sharing non-orthogonal multiple access (NOMA) system. We consider the scenario where the power transmitted by the secondary transmitter (ST) is constrained by the peak tolerable interference at multiple primary receivers (PRs) as well as the maximum transmit power of the ST. The effect of channel estimation error is also taken into account in our analysis. We derive exact and asymptotic closed-form expressions for the ESSR of the downlink NOMA system, and show that the performance can be classified into two distinct regimes, i.e., it is dictated either by the interference constraint or by the power constraint. Our results confirm the superiority of the NOMA-based system over its orthogonal multiple access (OMA) based counterpart. More interestingly, our results show that NOMA helps in maintaining the secrecy rate of the strong user while significantly enhancing the secrecy performance of the weak user as compared to OMA. The correctness of the proposed investigation is corroborated through Monte Carlo simulation.</div>

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“…Following the arguments in [12], we adopt a low-overhead location-based user-pairing scheme. In this scheme, we form a set S, consisting of the distances of the secondary users from the ST, arranged in a descending order.…”

Section: System Modelmentioning

confidence: 99%

On the Effective Rate of NOMA in Underlay Spectrum Sharing

Kumar

Ding

Flanagan

2021

IEEE Trans. Veh. Technol.

Self Cite

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In this paper, we present the delay-constrained performance analysis of a multi-antenna-assisted multiuser nonorthogonal multiple access (NOMA) based spectrum sharing system over Rayleigh fading channels. We derive analytical expressions for the sum effective rate (ER) for the downlink NOMA system under a peak interference constraint. In particular, we show the effect of the availability of different levels of channel state information (instantaneous and statistical) on the system performance. We also show the effect of different parameters of interest, including the peak tolerable interference power, the delay exponent, the number of antennas and the number of users, on the sum ER of the system under consideration. An excellent agreement between simulation and theoretical results confirms the accuracy of the analysis. I. INTRODUCTIONW ITH an explosive growth in the number of wireless communication devices and users, along with an unprecedented growth in internet traffic, one of the major challenges for the development of beyond-fifth-generation (B5G) systems is to accommodate a massive number of devices into a congested spectrum. Moreover, with the development of new wireless services, there is a new wave of applications which are extremely delay sensitive. Such applications include live video streaming, online gaming, vehicle-to-everything (V2X) communications and tactile Internet. NOMA and spectrum sharing are two major technologies that can mitigate the problem of spectrum scarcity while also providing massive connectivity with low latency. It is well-known that NOMA facilitates spectrum sharing and can also enhance the secrecy performance of unmanned aerial vehicle (UAV) aided simultaneous wireless information and power transfer (SWIPT) [1] as well as that of the primary/licensed network [2].The average achievable rate is one of the commonly used metrics to evaluate the performance of a wireless communication system. However, it is important to note that this metric is based on Shannon's channel capacity formula, which does not take into account the queuing delay at the transmitter. In order to quantify the delay-constrained performance of a wireless communications system, the concept of effective rate (also known as effective capacity 1 or link-layer capacity)

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Secrecy Performance of NOMA Systems With Energy Harvesting and Full-Duplex Relaying

Cited by 25 publications

References 10 publications

On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

On the Secrecy Rate of Downlink NOMA in Underlay Spectrum Sharing with Imperfect CSI

On the Effective Rate of NOMA in Underlay Spectrum Sharing

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