Enhancing the performance of downlink NOMA relaying networks by RF energy harvesting and data buffering at relay

Hoang, Tran Manh; Thang, Nguyen Nhu; Nguyen, Ba Cao; Tran, Phuong T.

doi:10.1007/s11276-022-02947-5

Wireless Netw

2022

DOI: 10.1007/s11276-022-02947-5

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Enhancing the performance of downlink NOMA relaying networks by RF energy harvesting and data buffering at relay

Tran Manh Hoang

Nguyen Nhu Thang

Ba Cao Nguyen

et al.

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Cited by 5 publications

References 35 publications

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Sum-rate maximization for a distributed space-time block code-aided cooperative NOMA with energy harvesting

Alamu,

Olwal,

Djouani

2024

Wireless Netw

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In this paper, we exploit the spatial and transmission diversities in cooperative non-orthogonal multiple access (C-NOMA) networks to improve the system sum-rate. To achieve this, we propose a user-pairing scheme where near-field user pairs serve as relays for user pairs in the far-field region. Based on this pairing scheme, we incorporate a space-time block code transmission technique at the near-field user pairs to maximize the transmission diversity in the cooperative phase. Moreover, we consider a non-linear energy harvesting model at the near-field user pair to alleviate the problem of energy consumption during the cooperative transmission phase. Further to this, we formulate a sum-rate maximization problem that is addressed from the viewpoint of joint power allocation factor and power splitting ratio optimization. We develop a low-computational iterative algorithm based on the concepts of the Stackelberg game and the Nash bargaining solution. We benchmark our findings with different scenarios, such as energy harvesting C-NOMA with a fixed power allocation factor and power splitting ratio, energy harvesting C-NOMA without STBC, non-cooperative NOMA, and orthogonal multiple access. The results obtained via simulations outperform the benchmark schemes.

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Sum-rate maximization for a distributed space-time block code-aided cooperative NOMA with energy harvesting

Alamu,

Olwal,

Djouani

2024

Wireless Netw

View full text Add to dashboard Cite

show abstract

On performance of short-packet ultra-reliable and low-latency communications NOMA MIMO relay networks

Lam,

Thi,

Phuong

2023

Physical Communication

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Outage and Throughput Analysis of UAV-Assisted NOMA Relay Systems With Indoor and Outdoor Users

Hoang

Dung

Nguyen

et al. 2023

IEEE Trans. Aerosp. Electron. Syst.

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Enhancing the performance of downlink NOMA relaying networks by RF energy harvesting and data buffering at relay

Cited by 5 publications

References 35 publications

Sum-rate maximization for a distributed space-time block code-aided cooperative NOMA with energy harvesting

Sum-rate maximization for a distributed space-time block code-aided cooperative NOMA with energy harvesting

On performance of short-packet ultra-reliable and low-latency communications NOMA MIMO relay networks

Outage and Throughput Analysis of UAV-Assisted NOMA Relay Systems With Indoor and Outdoor Users

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