A novel joint user pairing and dynamic power allocation scheme in MIMO-NOMA system

Chinnadurai, Sunil; Selvaprabhu, Poongundran; Lee, Moon Ho

doi:10.1109/ictc.2017.8190822

Cited by 21 publications

(15 citation statements)

References 5 publications

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“…To the best of our knowledge, most of the works published in literature dealt with the aspect optimal user aggregation configuration in each sub-band through matching theory-based algorithm [21], [22], neighbour search methods, like the hill climbing and simulated annealing [23], or game-theory based approaches [19]. Owing to this fact, an explicit user pairing strategy, which takes into account the characteristics of the channel condition experienced by each user, remains to be investigated yet.…”

Section: B Motivationmentioning

confidence: 99%

A PSO-Based Approach for User-Pairing Schemes in NOMA Systems: Theory and Applications

et al. 2019

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This paper proposes an exhaustive analysis of a particle swarm optimization (PSO)-based configuration applied in non-orthogonal multiple access (NOMA) systems in order to perform user aggregation along different sub-channels. The idea behind this is to highlight the main characteristics of this PSO-based configuration for understanding how this policy enables the transmitter to require the minimum downlink transmitting power while guaranteeing the quality-of-service (QoS) constraint of each user. The analysis is carried out for two representative power-constrained scenarios, i.e., disaster relief network communications and unmanned aerial vehicle (UAV) communications, in which performing low-power transmissions represent an important aspect. Our results find applicability in the definition of explicit channel-state-aware strategies for user multiplexing in NOMA systems, which, at the date, represents a research field that remains to be investigated more in depth. Insightful discussions are provided from our analysis. For instance, depending on the number of available sub-channels and the channel gains experienced by each users along with the whole available bandwidth, it is shown how users must be multiplexed by the transmitter in order to reach the minimum transmitting power.

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Section: B Motivationmentioning

confidence: 99%

A PSO-Based Approach for User-Pairing Schemes in NOMA Systems: Theory and Applications

et al. 2019

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“…Authors in [33] examined a joint user pairing and dynamic power allocation (JUPDPA) design to maximize the energy efficiency (EE) in the multi-cell MIMO-NOMA downlink system. A set of K users are ordered in the descending order based on the Euclidean norm of their channel vectors, i.e., h i , and divided in two groups, named cell centre (CC) and cell edge (CE), depending if their channel vector norm is higher or lower than the median value defined in (10), respectively.…”

Section: State Of the Artmentioning

confidence: 99%

On the optimal user grouping in NOMA system technology

Masaracchia¹,

Ha²,

Le³

2019

EAI Endorsed Transactions on Industrial Networks and Intelligen

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This paper provides a state-of-art analysis of the most relevant studies on optimal user-aggregation strategies for non-orthogonal multiple access (NOMA) technology. The main ideas behind are i) to highlight how, in addition to the adoption of an optimal power allocation scheme, an optimal user-aggregation strategy represents an important key factor for improving NOMA system performance, and ii) to provide an exhaustive survey of the most relevant studies which can serve as useful starting point for the definition of new channel state-aware user-aggregation strategies for NOMA systems which, at the time of writing, represents a research field that still remains to be investigated more in depth. A detailed and complete analysis, which permits to point out the need to guarantee a certain relationship between users' channel gain, is provided for each cited work.

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“…On the other hand, a little study explored both uplink and downlink case [16,17]. Since NOMA shared radio resources at least a pair of users in the power domain, the effects of user pairing [11,15,[16][17][18] are of interest for maximizing the system throughput. Nevertheless, little concern has been paid to the beam-forming [13,16] and energy efficiency [14] in the PD-NOMA multi-cell system.…”

Section: Fig 3 -Pd-noma In Multi-cell Scenariomentioning

confidence: 99%

A Review of Power Domain Non-Orthogonal Multiple Access in 5G Networks

Kassir

Dziyauddin

Kaidi

et al. 2018

IJIE

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This paper highlights the fundamentals of the strong candidate Power Domain Non-Orthogonal Multiple Access (PD-NOMA) technique, and how it can best fit the requirements of fifth Generation (5G) in practical applications. PD-NOMA ensures flexibility in radio resource to improve user's access performance. Multiple users share the same radio resources in PD-NOMA, and therefore better spectrum efficiency can be achieved. The practical system design aspects of PD-NOMA are considered in this paper by exploring different network scenarios. Optimal performances of PD-NOMA system can be obtained by suitable power allocation schemes, with reduce the computational complexity, and advanced user pairing strategy. Theoretical formulation and solutions are also explained prior to the concept of downlink PD-NOMA. Challenges and future research windows are discussed before conclusion of this paper.

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A novel joint user pairing and dynamic power allocation scheme in MIMO-NOMA system

Cited by 21 publications

References 5 publications

A PSO-Based Approach for User-Pairing Schemes in NOMA Systems: Theory and Applications

A PSO-Based Approach for User-Pairing Schemes in NOMA Systems: Theory and Applications

On the optimal user grouping in NOMA system technology

A Review of Power Domain Non-Orthogonal Multiple Access in 5G Networks

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