Outage performance analysis of relay-aided non-orthogonal multiple access networks with energy harvesting schemes

In this study, the performance of wirelessly powered relay-aided non-orthogonal multiple access networks is investigated in terms of outage probability. Specifically, two relay selection strategies, i.e. two-stage relay selection (TRS) and maximum energy harvesting relay selection (MEHS), and two en...

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Bibliographic Details
Published in:IET communications 2020-10, Vol.14 (17), p.3013-3021
Main Authors: Nguyen, Hong T, Nguyen, Nam-Phong, Nguyen, Tien-Hoa, Nguyen, Chuyen T
Format: Article
Language:English
Subjects:
diversity reception
energy harvesting
energy harvesting strategies
maximum energy harvesting relay selection
MEHS
Monte Carlo methods
Monte‐Carlo simulation
multi‐access systems
optimal performance
outage performance analysis
outage probability
parameter selections
power splitting
probability
relay networks (telecommunication)
Research Article
system performance
telecommunication network reliability
telecommunication power management
telecommunication switching
time switching
two‐stage relay selection strategies
wirelessly powered relay‐aided nonorthogonal multiple access networks
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Summary:In this study, the performance of wirelessly powered relay-aided non-orthogonal multiple access networks is investigated in terms of outage probability. Specifically, two relay selection strategies, i.e. two-stage relay selection (TRS) and maximum energy harvesting relay selection (MEHS), and two energy harvesting scenarios, i.e. time switching (TS) and power splitting (PS) are considered. In each setup, outage probabilities' analytical expressions and their asymptotics are derived. Monte-Carlo simulations are also carried out to verify the correctness of the analysis. The results show that regardless of relay selection and energy harvesting strategies, increasing transmit power can improve the proposed system performance. However, TRS can achieve a full diversity order, while MEHS has a unit diversity order. Besides, the results recommend parameter selections of PS and TS coefficients for optimal performance in term of outage probability.
ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2020.0052