Power‐splitting relaying protocol for wireless energy harvesting and information processing in NOMA systems

Tran, Huu Q.; Nguyen, Tien‐Tung; Phan, Ca Van; Vien, Quoc-Tuan

doi:10.1049/iet-com.2018.5897

Cited by 18 publications

(27 citation statements)

References 26 publications

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“…We discuss the feasibility of the KKT condition for the NDR network given in (19) to (38). In the first step, we examine those in (29), (30), (31), (32) and (38). Since P 1 , P 2 , P 3 and P 4 are positive numbers which ensures data transmission is performed in both the upper and the lower branches, λ 6 , λ 7 , λ 8 and λ 9 must be zeros undoubtedly.…”

Section: Appendix Bmentioning

confidence: 99%

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Joint Power Allocation for NOMA-Based Diamond Relay Networks With and Without Cooperation

Huang

Lee

Sou

2020

IEEE Open J. Commun. Soc.

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Non-orthogonal multiple access (NOMA)-based diamond relaying (NDR) is an efficient approach for combining NOMA and relaying techniques in such a way as to enhance the achievable rate from the source to the destination in the network. This paper examines the problem of joint power allocation among all the transmission phases during the operation of such networks. Based on the Karush-Kuhn-Tucker (KKT) condition and the second-order sufficient condition (SOSC), at least the local optimal solution is derived and analyzed. In addition, a new protocol for NDR networks based on cooperative communications is introduced and the associated joint power-allocation problem is examined. It is shown that this cooperative NDR (C-NDR) network further improves the achievable rate in some typical placements of the relays. Simulation results verify the correctness of the deviation and confirm the effectiveness of the proposed joint power-allocation method for both NDR and C-NDR networks. INDEX TERMS Non-orthogonal multiple access (NOMA), relay networks, NOMA-based diamond relaying (NDR), cooperative communications, Karush-Kuhn-Tucker (KKT) condition, second-order sufficient condition (SOSC), joint power allocation, achievable rate.

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Section: Appendix Bmentioning

confidence: 99%

“…Consequently, (29), (30), (31) and (32) are inactive conditions. Though we exclude (29) through (32) in the optimization, determining whether λ 1 and λ 2 are zeros or positive numbers is still hard. To reveal this, we temporarily change to discuss whether C 1 equals C 3 and C 2 equals C 4 .…”

Section: Appendix Bmentioning

confidence: 99%

Joint Power Allocation for NOMA-Based Diamond Relay Networks With and Without Cooperation

Huang

Lee

Sou

2020

IEEE Open J. Commun. Soc.

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“…a NU, is given a lower power allocation factor than a weak user, i.e. a FU, to ensure user fairness [1], [5]- [7]. Two key techniques applied in NOMA consist of superposition coding (SC) [2] and successive interference cancellation (SIC) [1]- [2].…”

Section: Introductionmentioning

confidence: 99%

“…More, by forwarding the information to far user, the relay based SWIPT C-NOMA can improve the integrity and reliability of the transmitted data for weak users [13]. Power splitting protocol (PSR) and time switching protocol (TSR) are exploited at SWIPT based relaying nodes to harvest energy and process information [5]- [6], [14]- [15]. In [16], the sum throughput of users in SWIPT based C-NOMA system was studied.…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, in relay based C-NOMA, far users normally receive the transmitted signal which is forwarded from relay nodes [23]- [27]. This is because there are some obstacles on the propagation [5]- [6], [28]. However, in system models without obstacle, these far users can receive signals from both relay and BS, namely therefore relay based C-NOMA with direct links [25], [29]- [31].…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis of Power-Splitting Relaying Protocol in SWIPT Based Cooperative NOMA Systems

Tran

Phan

Vien³

2020

Preprint

Self Cite

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This paper investigates a relay assisted simultaneous wireless information and power transfer (SWIPT) for downlink in cellular systems. Cooperative non-orthogonal multiple access (C-NOMA) is employed along with power splitting (PS) protocol to enable both energy harvesting (EH) and information processing (IP). A downlink model consisting of a base station (BS) and two users is considered, in which the near user (NU) is selected as a relay to forward the received signal from the BS to the far user (FU). Maximum ratio combining is then employed at the FU to combine both the signals received from the BS and NU. Closed form expressions of outage probability (OP), throughput, ergodic rate and energy efficiency (EE) are firstly derived for the SWIPT based C-NOMA considering both scenarios of having and without having direct link between the BS and FU. The impacts of EH time, EH efficiency, power-splitting ratio, source data rate and distance between different nodes on the performance are then investigated. The simulation results show that the C-NOMA with direct link achieves an outperformed performance over C-NOMA without direct link. Moreover, the performance of C-NOMA with direct link is also higher than that for OMA. Specifically, (i) the outage probability for C-NOMA in both direct and relaying link cases is always lower than that for OMA. (ii) the outage probability, throughput and ergodic rate vary according to b, (iii) the EE of both users can obtain in SNR range of from -10 to 5 dB and it decreases linearly as SNR increases. Numerical results are provided to verify the findings.

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Uplink Performance Analysis of Wireless Energy Harvesting-Enabled NOMA-based Networks

Bepari,

Mondal,

Pareek

et al. 2024

Mobile Netw Appl

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Power‐splitting relaying protocol for wireless energy harvesting and information processing in NOMA systems

Abstract: (2019) A power-splitting relaying protocol for wireless energy harvesting and information processing in NOMA systems. IET Communications, 13 (14). pp. 2132-2140.

Cited by 18 publications

References 26 publications

Joint Power Allocation for NOMA-Based Diamond Relay Networks With and Without Cooperation

Joint Power Allocation for NOMA-Based Diamond Relay Networks With and Without Cooperation

Performance Analysis of Power-Splitting Relaying Protocol in SWIPT Based Cooperative NOMA Systems

Uplink Performance Analysis of Wireless Energy Harvesting-Enabled NOMA-based Networks

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