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Outage Performance of Relay-Assisted Single- and Dual-Stage NOMA Over Power Line Communications

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posted on 18.06.2021, 02:24 by ROOPESH RAMESH, Sanjeev Gurugopinath, sami muhaidatsami muhaidat

In this paper, we analyze the performance of relay-assisted, single-stage (SS) non-orthogonal multiple access (NOMA) and dual-stage (DS) NOMA power line communication systems. Specifically, derive closed form expressions for the outage probabilities of the SS NOMA and DS NOMA schemes. Subsequently, we formulate optimization problems and obtain closed-form solutions for the optimal power allocation coefficients of the SS NOMA and DS NOMA scheme, such that the probability of overall outage is minimized. The accuracy of our analysis and the tightness of the approximations employed are validated through Monte Carlo simulations and numerical techniques. Moreover, we show that the DS NOMA scheme outperforms the SS NOMA scheme, in terms of the overall outage probability.

History

Email Address of Submitting Author

muhaidat@ieee.org

ORCID of Submitting Author

https://orcid.org/0000-0003-4649-9399

Submitting Author's Institution

Khalifa University

Submitting Author's Country

United Arab Emirates