Abstract
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.
Highlights
A particle swarm optimization (PSO)-Based Approach for User-Pairing Schemes in non-orthogonal multiple access (NOMA) SystemsANTONINO MASARACCHIA 1, DANIEL BENEVIDES DA COSTA 2, (Senior Member, IEEE), TRUNG Q
During the last decade, the diffusion of powerful multimedia devices, such as smartphones and tablets, has grown exponentially
An interesting solution would be the development of more scalable algorithms which permit the Base Station (BS) to reach concurrently an optimal aggregation and pairing configuration
Summary
ANTONINO MASARACCHIA 1, DANIEL BENEVIDES DA COSTA 2, (Senior Member, IEEE), TRUNG Q. DUONG 1, (Senior Member, IEEE), MINH-NGHIA NGUYEN 3, AND MINH T.
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