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Online Power Allocation at Energy Harvesting Transmitter for Multiple Receivers With and Without Individual Rate Constraints for OMA and NOMA Transmissions | IEEE Journals & Magazine | IEEE Xplore

Online Power Allocation at Energy Harvesting Transmitter for Multiple Receivers With and Without Individual Rate Constraints for OMA and NOMA Transmissions


Abstract:

In this paper, we propose an online power allocation scheme to maximize the time average of the expected value of sum rate for multiple downlink receivers with energy har...Show More

Abstract:

In this paper, we propose an online power allocation scheme to maximize the time average of the expected value of sum rate for multiple downlink receivers with energy harvesting transmitter. The transmitter employs non-orthogonal multiple access (NOMA) and/or orthogonal multiple access (OMA) to transmit data to multiple users. Additionally, we consider the scenario where each individual user has a quality of service constraint on its required instantaneous rate. The decisions of total transmit power and power allocation for different users in a given time slot are obtained with the help of Lyapunov optimization technique. The proposed schemes do not require any statistical information of the channel states and the harvested energy. The proposed power allocation schemes entail in small complexity based power allocation decisions. Therefore, the proposed schemes can provide solutions in real time and are more suited for online power allocation problems where the system state parameters (e.g., channel state, harvested energy etc) change quickly. The performances of the proposed schemes are demonstrated with the help of simulation results.
Published in: IEEE Transactions on Green Communications and Networking ( Volume: 5, Issue: 3, September 2021)
Page(s): 1594 - 1609
Date of Publication: 23 June 2021
Electronic ISSN: 2473-2400

Funding Agency:


References

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