Secrecy sum rate maximization in NOMA systems with wireless information and power transfer

He, Gui; Li, Lixin; Li, Xu; Chen, Wei; Yang, Lie‐Liang; Han, Zhu

doi:10.1109/wcsp.2017.8171177

Cited by 25 publications

(20 citation statements)

References 15 publications

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“…Since SWIPT and NOMA are two promising techniques for the forthcoming 5G, many researchers have investigated the performance of the integrated systems. The existing literatures indicate that SWIPT-enabled NOMA systems are able to provide performance improvement in many aspects compared to OMA systems, including energy harvesting [29], total throughput [30], user fairness [31], secrecy sum-rate [32], outage performance [33], [34], etc. To comply with the global commitments for handling the so-called resource crunch in a sustainable and economical manner, balancing the requirements of low power consumption and high data rata is significantly important.…”

Section: A Motivation and Contributionsmentioning

confidence: 99%

“…By utilizing corresponding priority weights, authors fairly maximized the downlink/uplink users rates and showed that a relatively high downlink rate can be achieved. In [32], the secrecy sum-rate optimization problem for SWIPTenabled NOMA system has been investigated. Furthermore, cooperative SWIPT-based NOMA has also attracted great research interest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Energy Efficiency Optimization for NOMA With SWIPT

Tang

Luo

Liu

et al. 2019

IEEE J. Sel. Top. Signal Process.

185

156

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Section: A Motivation and Contributionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Energy Efficiency Optimization for NOMA With SWIPT

Tang

Luo

Liu

et al. 2019

IEEE J. Sel. Top. Signal Process.

185

156

View full text Add to dashboard Cite

show abstract

“…With the extensive fundamental studies on both SWIPT and NOMA, the combination of these two techniques has aroused great interest recently and it was verified that combining SWIPT with NOMA could bring plenty of advantages, i.e., user fairness [6], data rate [7], secrecy rate [8], etc. However, its impact on the EE performance has not been investigated, which is still an open question.…”

Section: Introductionmentioning

confidence: 99%

Energy-Efficient Resource Allocation in SWIPT Enabled NOMA Systems

Tang

Luo

et al. 2018

2018 IEEE Global Communications Conference (GLOBECOM)

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In this paper, we investigate joint power allocation and time switching (TS) control for energy efficiency (EE) optimization in a TS-based simultaneous wireless information and power transfer (SWIPT) non-orthogonal multiple access (NOMA) system. Our aim is to optimize the EE of the system whilst satisfying the constraints on maximum transmit power, minimum data rate and minimum harvested energy per-terminal. The considered EE optimization problem is formulated and then transformed according to the duality of broadcast channels (BC) and multiple access channels (MAC). The corresponding non-linear and non-convex optimization problem, involving joint optimization of power allocation and time switching factor, is difficult to solve directly. In order to tackle this problem, we develop a dual-layer algorithm where a convex programmingbased Dinkelbach's method is proposed to optimize the power allocation in the inner-layer and an efficient search method is then applied to optimize the TS factor in the outer-layer. Numerical results validate the theoretical findings and demonstrate that significant performance gain over orthogonal multiple access (OMA) scheme in terms of EE can be achieved by the proposed algorithm in a SWIPT-enabled NOMA system.

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“…Exploiting wireless energy harvesting in NOMA systems, the authors in [29] considered various energy harvesting protocols, e.g., conventional receive-TS, PS and generalized (hybrid TS/PS), however, they assumed a very simple setup of single antenna BS and single user pair and did not consider multi-antenna beamforming. In [30], the authors also studied wireless power transfer and information transmission in NOMA system, however, they also assumed a simple setup with single antenna BS and employed PS based strategy for energy harvesting. In [31], the authors considered an energy-constrained full-duplex information transmitter, which harvests energy from a dedicated energy transmitter while transmitting information to the information receivers by employing NOMA.…”

Section: B Literature Surveymentioning

confidence: 99%

NOMA Throughput and Energy Efficiency in Energy Harvesting Enabled Networks

Nasir

Tuan

Debbah

2019

IEEE Trans. Commun.

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Wireless power transfer via radio-frequency (RF) radiation is regarded as a potential solution to energize energy-constrained users, who are deployed close to the base stations (near-by users). However, energy transfer requires much more transmit power than normal information transfer, which makes it very challenging to provide the quality of service in terms of throughput for all near-by users and cell-edge users. Thus, it is of practical interest to employ non-orthogonal multiple access (NOMA) to improve the throughput of all network users, while fulfilling the energy harvesting requirements of the near-by users. To realize both energy harvesting and information decoding, we consider a transmit time-switching (transmit-TS) protocol. We formulate two important beamfoming problems of users' max-min throughput optimization and energy efficiency maximization under power constraint and energy harvesting thresholds at the nearly-located users. For these problems, the optimization objective and energy harvesting are non-convex in beamforming vectors. Thus, we develop efficient path-following algorithms to solve them. In addition, we also consider conventional power splitting (PS)-based energy harvesting receiver. Our numerical results confirm that the proposed transmit-TS based algorithms clearly outperform PS-based algorithms in terms of both, throughput and energy efficiency.Index Terms-Wireless power transfer, energy harvesting, non-orthogonal multiple access (NOMA), nonconvex optimization, throughput, energy efficiency, quality-of-service (QoS).

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Secrecy sum rate maximization in NOMA systems with wireless information and power transfer

Cited by 25 publications

References 15 publications

Energy Efficiency Optimization for NOMA With SWIPT

Energy Efficiency Optimization for NOMA With SWIPT

Energy-Efficient Resource Allocation in SWIPT Enabled NOMA Systems

NOMA Throughput and Energy Efficiency in Energy Harvesting Enabled Networks

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