Energy-Efficient Transmission Design in Non-orthogonal Multiple Access

Zhang, Yi; Wang, Huiming; Zheng, Tong-Xing; Yang, Qian

doi:10.1109/tvt.2016.2578949

Cited by 272 publications

(181 citation statements)

References 7 publications

(16 reference statements)

Supporting

Mentioning

180

Contrasting

Order By: Relevance

“…Varshney 27 proposed the concept of simultaneous wireless information and power transfer (SWIPT) in wireless communication systems. 31,32 For example, Zhang et al 33 proposed an energy-efficient transmission method for an IoT system with the NOMA technology. 9 This is because the WPT operation can impair the signals.…”

Section: Related Workmentioning

confidence: 99%

Energy consumption optimization for self‐powered IoT networks with non‐orthogonal multiple access

Luo

et al. 2019

Int J Communication

View full text Add to dashboard Cite

Energy harvesting (EH) has been considered as one of the promising technologies to power Internet of Things (IoT) devices in self-powered IoT networks. By adopting a typical harvest-then-transmit mode, IoT devices with the EH technology first harvest energy by using wireless power transfer (WPT) and then carry out wireless information transmission (WIT), which leads to the coordination between WPT and WIT. In this paper, we consider optimizing energy consumption of periodical data collection in a self-powered IoT network with non-orthogonal multiple access (NOMA). Particularly, we take into account time allocation for the WPT and WIT stages, node deployment, and constraints for data transmission. Moreover, to thoroughly explore the impact of different multiple access methods, we theoretically analyse and compare the performance achieved by employing NOMA, frequency division multiple access (FDMA), and time division multiple access (TDMA) in the considered IoT network. To validate the performance of the proposed method, we conduct extensive simulations and show that the NOMA outperforms the FDMA and TDMA in terms of energy consumption and transmission power. KEYWORDSInternet of Things (IoT), non-orthogonal multiple access, wireless information transmission, wireless power transfer Int J Commun Syst. 2020;33:e4174.wileyonlinelibrary.com/journal/dac

show abstract

Section: Related Workmentioning

confidence: 99%

Energy consumption optimization for self‐powered IoT networks with non‐orthogonal multiple access

Luo

et al. 2019

Int J Communication

View full text Add to dashboard Cite

show abstract

“…For successful SIC, a sufficient gap in transmit powers of different users is mandatory and must be ensured by the proposed solutions. However, related works did not guarantee such gap in transmit powers in their proposed frameworks, and hence the proposed solutions are less practical. In the work of Ali et al, authors studied power allocation to maximize sum throughput of the system subject to minimum rate requirements of the users, limited transmit power, and a constraint to ensure sufficient gap between transmitted powers for successful SIC.…”

Section: Introductionmentioning

confidence: 97%

“…Power optimization in NOMA systems is necessary to exploit the potential benefits for future 5G systems and is a nontrivial problem . Recently, the other works have investigated the problem for power domain NOMA system under various objectives and constraints. The work of Zhang et al has studied power allocation to maximize energy efficiency in a multiuser system.…”

Section: Introductionmentioning

confidence: 99%

On fair power optimization in nonorthogonal multiple access multiuser networks

Ali

Sidhu

Waqas

et al. 2018

Trans Emerging Tel Tech

View full text Add to dashboard Cite

Nonorthogonal multiple access (NOMA) has been recognized as a key solution to fulfill the demands of 5G wireless communication. In this paper, our aim is to maximize the fairness in the data rates of different users in a multiuser NOMA system. We optimize the downlink transmission subject to minimum rate requirement of each user, limited power budget at the transmitter, and the successive interference cancelation constraint. First, we solve the problem for two‐user scenario where the nonconvex problem is transformed into a standard convex minimization problem and the duality theory is exploited to find the solution. The optimal power allocation is obtained from the Karush‐Kuhn‐Tucker (KKT) conditions, whereas the dual problem is solved via subgradient algorithm. As a next step, we consider the general multiuser optimization problem where more than two users can share the same channel under NOMA transmission. We design efficient solution techniques to solve the nonconvex optimization problem with sequential quadratic programming (SQP). Furthermore, two suboptimal low complexity solutions are also presented. We found that, under the proposed schemes, the fairness increases with increasing the available transmit power and decreases with the increasing the number of users. We show a complexity comparison of the dual‐based solution and the SQP algorithm. It is observed that power optimization through KKT conditions exhibits much lower computational complexity as compared to the SQP‐based solution.

show abstract

“…Recently, NOMA has attracted a lot of interest from both academia and industry, due to its superiority in improving throughput, reducing latency and achieving massive connectivity [2]- [6]. In [2], Ding et al investigated the performance of NOMA, when the users are randomly distributed.…”

Section: Introductionmentioning

confidence: 99%

“…A novel NOMA scheme, i.e., pattern division multiple access, was proposed in [5] by Chen et al, which can significantly improve the spectrum efficiency. In [6], Zhang et al maximized the energy efficiency of NOMA systems through optimal power allocation.…”

Section: Introductionmentioning

confidence: 99%

A Novel Spectrum Sharing Scheme Assisted by Secondary NOMA Relay

Chen

et al. 2018

IEEE Wireless Commun. Lett.

View full text Add to dashboard Cite

Copies of full items can be used for personal research or study, educational, or not-for profit purposes without prior permission or charge. Provided that the authors, title and full bibliographic details are credited, a hyperlink and/or URL is given for the original metadata page and the content is not changed in any way.Publisher's statement: "© 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works." A note on versions:The version presented here may differ from the published version or, version of record, if you wish to cite this item you are advised to consult the publisher's version. Please see the 'permanent WRAP URL' above for details on accessing the published version and note that access may require a subscription. Abstract-In this letter, a two-slot secondary non-orthogonal multiple access (NOMA) relay is used to assist spectrum sharing, where the primary transceivers with long distance communicate through the relay. First, the information for the primary receiver (PR) and secondary receivers (SRs) is transmitted via the NOMA relay. Then, the information for PR is re-transmitted to it through a selected SR to improve its quality of service using maximalratio combining, while the next data for PR is sent from the primary transmitter (PT) to the NOMA relay simultaneously. The power allocation solution is derived for the NOMA relay. Simulation results have shown the effectiveness of the proposed scheme.

show abstract

Energy-Efficient Transmission Design in Non-orthogonal Multiple Access

Cited by 272 publications

References 7 publications

Energy consumption optimization for self‐powered IoT networks with non‐orthogonal multiple access

Energy consumption optimization for self‐powered IoT networks with non‐orthogonal multiple access

On fair power optimization in nonorthogonal multiple access multiuser networks

A Novel Spectrum Sharing Scheme Assisted by Secondary NOMA Relay

Contact Info

Product

Resources

About