Uplink and downlink of energy harvesting NOMA system: performance analysis

ABSTRACT

In this paper, we consider an uplink non-orthogonal multiple access (NOMA) for energy harvesting at the base station or access point in the wireless system. By exploiting energy enough, a base station or access point can serve many users at the downlink. The fixed power allocation factors are adopted, and the power splitting energy harvesting protocol brings many benefits to both the uplink and downlink of a wireless system. The closed-form expressions of outage probability are investigated and examined in a group of two users. Moreover, the optimal outage probability for two users is shown numerically. Finally, Monte Carlo simulations are presented to further support the validity of our framework and findings.

KEYWORDS:

• Non-orthogonal multiple access (NOMA)
• outage probability
• two-way
• power splitting
• energy harvesting

Acknowledgments

The authors would like to thank the anonymous reviewers for their helpful comments and suggestions.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work is a part of the basic science research program CSB-10 funded by the Saigon University.