Performance Analysis and Power Allocation for NOMA-Based Hybrid Satellite-Terrestrial Relay Networks With Imperfect Channel State Information

Xie, Silin; Zhang, Bangning; Guo, Daoxing; Zhao, Bing

doi:10.1109/access.2019.2942167

Cited by 42 publications

(35 citation statements)

References 42 publications

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“…For example, in [13][14][15], amplify-and-forward (AF) relaying is employed to enhance the performance of HSTRN. In contrast, HSTRN was considered in relaying mode using the decode-and-forward (DF) as in [16,17]. The HSTRN was studied in a system model that combines the beamforming technique and AF transmission mode [18].…”

Section: Related Workmentioning

confidence: 99%

Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access

Kharel

et al. 2020

Sensors

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The development of hybrid satellite-terrestrial relay networks (HSTRNs) is one of the driving forces for revolutionizing satellite communications in the modern era. Although there are many unique features of conventional satellite networks, their evolution pace is much slower than the terrestrial wireless networks. As a result, it is becoming more important to use HSTRNs for the seamless integration of terrestrial cellular and satellite communications. With this intent, this paper provides a comprehensive performance evaluation of HSTRNs employing non-orthogonal multiple access technique. The terrestrial relay is considered to be wireless-powered and harvests energy from the radio signal of the satellite. For the sake of comparison, both amplify-and-forward (AF) and decode-and-forward (DF) relaying protocols are considered. Subsequently, the closed-form expressions of outage probabilities and ergodic capacities are derived for each relaying protocol. Extensive simulations are performed to verify the accuracy of the obtained closed-form expressions. The results provided in this work characterize the outage and capacity performance of such a HSTRN.

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Section: Related Workmentioning

confidence: 99%

Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access

Kharel

et al. 2020

Sensors

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“…In [123], the authors quantitatively evaluated the effect of imperfect CSI in terms of the outage probability and ergodic capacity in a cognitive satellite-terrestrial network. In [124], the authors considered the CSI imperfections to formulate a closed-form expression for the outage probability in a hybrid satelliteterrestrial relay network based on NOMA. To allow for data transmissions over multi-way satellite relaying systems, the authors in [125] formulated a novel method of channel estimation.…”

Section: B Propagation Delay Managementmentioning

confidence: 99%

Non-Terrestrial Networks in 5G & Beyond: A Survey

et al. 2020

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Fifth-generation (5G) telecommunication systems are expected to meet the world market demands of accessing and delivering services anywhere and anytime. The Non-Terrestrial Network (NTN) systems are able to satisfy the requests of anywhere and anytime connections by offering wide-area coverage and ensuring service availability, continuity, and scalability. In this work, we review the 3GPP NTN features and their potential for satisfying the user expectations in 5G & beyond networks. The state of the art, current 3GPP research activities, and open issues are summarized to highlight the importance of NTN over the wireless communication landscape. Future research directions are also identified to assess the role of NTN in 5G and beyond systems.

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“…Such NSHT enhances ability of spectrum sharing in the manner of the underlay architecture. The work in [27] considered NSHT by applying both the decode-andforward (DF) and amplify-and-forward (AF) protocols at the relay and the imperfection of channel state information (CSI) at all nodes. Furthermore, NOMA can be applied to edge computing and content caching in wireless networks to enable the emerging networks which provide high-quality services for users [28], [29].…”

Section: Introductionmentioning

confidence: 99%

Enabling NOMA in Overlay Spectrum Sharing in Hybrid Satellite-Terrestrial Systems

et al. 2021

IEEE Access

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In this paper, a hybrid satellite-terrestrial spectrum sharing system allows terrestrial secondary network to cooperate with a primary satellite network and to further provide higher spectrum efficiency. For massive connections design, we implement non-orthogonal multiple access (NOMA) technique to form cognitive radio based satellite-terrestrial (CR-NSHT) system relying on NOMA and further achieve more benefits compared with traditional schemes. The secondary network only remains its stable operation when the outage probability of such system is guaranteed, and thereby, to explore advantages of spectrum sharing opportunities. Considering Shadowed-Rician fading for satellite links, and Nakagami-m as well as Rician fading for terrestrial links, we derive the closed-form expressions of the outage probability to evaluate performance of secondary network. We find that several impacts on performance metrics such as power allocation factors, transmit signal to noise ratio (SNR) at the source, parameters of satellite links, target rates and values of fading channels. We consider further system performance metrics including ergodic capcity, energy efficiency and multi-user scenarios. Numerical and simulation results validate our analysis and highlight the performance gains of the proposed schemes for CR-NSHT with relay link serving secondary network and direct link serving the primary network.INDEX TERMS Hybrid satellite-terrestrial systems, cognitive radio, spectrum sharing, outage probability.

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Performance Analysis and Power Allocation for NOMA-Based Hybrid Satellite-Terrestrial Relay Networks With Imperfect Channel State Information

Cited by 42 publications

References 42 publications

Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access

Hybrid Satellite-Terrestrial Relay Network: Proposed Model and Application of Power Splitting Multiple Access

Non-Terrestrial Networks in 5G & Beyond: A Survey

Enabling NOMA in Overlay Spectrum Sharing in Hybrid Satellite-Terrestrial Systems

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