On Performance Analysis of NOMA-Aided Hybrid Satellite Terrestrial Relay With Application in Small-Cell Network

This paper evaluates the physical layer security performance of a reconfigurable intelligent surface (RIS) enabled wireless network in the presence of a passive eavesdropper. To secure the information transmission, a cooperative jammer is proposed to generate interference signal that degrade the performance of the eavesdropper. The source-to-RIS and RIS-to-destination links are subjected to Rician and Rayliegh fading distributions with phase errors, respectively, while other transmission links in the network follow the Nakagami-m fading distributions. The system phase error of the RIS is estimated by the von Mises distribution. To quantify the secrecy performance of the concerned system, the exact closed-form expressions in terms of connection outage probability (COP), security outage probability (SOP), and secrecy throughput (ST) are derived. In addition, the asymptotic expression of the system COP is obtained at high signal-to-noise ratio (SNR), providing more insight about the system performance. The accuracy of the derived expression is justified by Monte Carlo simulation. Also, the results clarify the analysis of the security performance, taking into account the impact of system and channel parameters on the system.

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“…similarly, the other links are subject to Nakagami-m distribution and the PDF can be expressed as [24]:…”

Section: Channel Modelsmentioning

confidence: 99%

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer

2022

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“…Within this context, the application of NOMA systems in HSTNs has been studied in the past, e.g. see [8], [9] and [20]- [25]. More specifically, [20] presented an HSTN with satellite multicasting in the millimeter waveband and a terrestrial cellular network adopting NOMA in the RF band.…”

Section: A Backgroundmentioning

confidence: 99%

“…Performance comparisons with OMA showed that NOMA can better support the cognitive paradigm in HSTNs. Lastly, [25] has proposed a small-cell hybrid satellite-terrestrial relay system (HSTRS) showing through analysis and computer simulations that, when NOMA is used, the outage performance of HSTRS improves significantly as compared to OMA.…”

Section: A Backgroundmentioning

confidence: 99%

“…However, such an approach is highly complex, as it requires CSI acquisition and exchange for user pairing and power allocation at both the satellite and the terrestrial links [21], [22]. Meanwhile, other HSTN related works employ terrestrial relays or user cooperation and operate in a multi-hop fashion [24], [25], [9], requiring additional time-slots for end-to-end communication. It is noted that all these approaches are highly complex, e.g.…”

Section: B Contributionsmentioning

confidence: 99%

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HST-NNC: A Novel Hybrid Satellite-Terrestrial Communication With NOMA and Network Coding Systems

Karavolos¹,

Νομικός²,

Vouyioukas³

et al. 2021

IEEE Open J. Commun. Soc.

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Hybrid satellite-terrestrial networks (HSTNs) are considered to be a promising solution in dealing with coverage and mobility challenges encountered in 5 th generation (5G) networks that employ novel multiple access and connectivity schemes. In this respect, non-orthogonal multiple access (NOMA) as well as network coding (NC) schemes have attracted significant attention due to their performance gains which not only improve the quality of wireless transmission but also, effectively exploit the available spectrum. In this paper, a combined NOMA-NC (NNC) scheme is presented and integrated into an HSTN consisting of a low earth orbit (LEO) satellite belonging to an LEO constellation, a terrestrial base station (BS), and multiple terrestrial mobile terminals (MTs). The proposed scheme, termed HST-NNC, allows pairs of users to be simultaneously served through NOMA via the terrestrial BS link and the satellite link. Furthermore, the satellite employs random linear network coding (RLNC), within the general framework of systematic network coding (SNC), to improve the reception of the MTs when errors occur. The proposed HST-NNC, as compared to standalone NOMA, does not require additional channel state information (CSI) overheads because the satellite needs only the indices of user pairs to perform RLNC. Performance comparisons of HST-NNC with conventional orthogonal multiple access (OMA) and NOMA optimal user pairing schemes have shown that significant sum rate and BER gains can be obtained under various operating system parameters, such as varying number of MTs, and different channel conditions.

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“…By using this prior knowledge, cooperative NOMA (CNOMA) has been utilized to further improve the performance of far users with inferior channel conditions [10][11][12][13]. Recently, a large number of studies have applied NOMA on terrestrial users in hybrid satellite-terrestrial relay networks [14,15]. For example, [14] investigated the outage probability of a NOMA-assisted hybrid satellite-terrestrial relay network and derived the closed-form expression for the outage probability of each NOMA user.…”

Section: Introductionmentioning

confidence: 99%

On the Secrecy Outage Performance of Cooperative NOMA-Assisted Hybrid Satellite-Terrestrial Networks

Chen

et al. 2022

Wireless Communications and Mobile Computing

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This paper investigates the secrecy outage performance of a downlink cooperative nonorthogonal multiple access- (NOMA-) assisted hybrid satellite-terrestrial network, where a satellite source communicates with two terrestrial users based on NOMA, in the presence of a terrestrial eavesdropper. We assume that there is no direct link between the satellite source and the far terrestrial user, and the near terrestrial user acts as a relay to forward the information to the far terrestrial user. The near user is assumed to support both half-duplex mode and the full-duplex mode for information relaying. We derive the closed-form exact expressions for the secrecy outage probability (SOP) of the near user, as well as the closed-form approximate expressions for the SOP of the far user based on the Gaussian-Chebyshev quadrature. Theoretical results are validated by conducting simulations. The impacts of various system parameters on the performance comparison between the half-duplex mode and full-duplex mode are investigated. Particularly, the full-duplex mode is shown to outperform the half-duplex mode when the received signal-to-noise ratio (SNR) at the near user is low or the residual self-interference is low.

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On Performance Analysis of NOMA-Aided Hybrid Satellite Terrestrial Relay With Application in Small-Cell Network

Cited by 11 publications

References 35 publications

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer

Physical layer security of reconfigurable intelligent surface empowered wireless network with cooperative jammer

HST-NNC: A Novel Hybrid Satellite-Terrestrial Communication With NOMA and Network Coding Systems

On the Secrecy Outage Performance of Cooperative NOMA-Assisted Hybrid Satellite-Terrestrial Networks

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