Energy Efficient Uplink Transmission in Cooperative mmWave NOMA Networks with Wireless Power Transfer

Khazali, A. and Tarchi, D. and G. Shayesteh, M. and Kalbkhani, H. and Bozorgchenani, A. (2021) Energy Efficient Uplink Transmission in Cooperative mmWave NOMA Networks with Wireless Power Transfer. IEEE Transactions on Vehicular Technology. ISSN 0018-9545 (In Press)

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Abstract

In 5G wireless networks, cooperative non-orthogonal multiple access (NOMA) and wireless power transfer (WPT) are efficient ways to improve the spectral efficiency (SE) and energy efficiency (EE). In this paper, a new cooperative NOMA scheme with WPT is proposed, where EE optimization with a constrained maximum transmission power and minimum required SE is considered for the user grouping and transmission power allocation of users. We obtain a sub-optimal solution by decoupling the original problem in two sub-problems: an iterative algorithm is considered for the user grouping, while, in addition, we utilize the Bat Algorithm (BA) for solving the power allocation problem, where BA was proved to be able to achieve a higher accuracy and efficiency with respect to other meta-heuristic algorithms. Furthermore, to validate the performance of the proposed system, analytical expressions for the energy outage probability and outage probability of users are derived, confirming the effectiveness of the simulation results. It is demonstrated that the proposed cooperative NOMA with WPT offers a considerable improvement in terms of SE and EE of the network compared to other methods. Finally, the effectiveness of BA in solving the EE optimization problem is demonstrated through a high convergence speed by comparing it with other methods. IEEE

Item Type:
Journal Article
Journal or Publication Title:
IEEE Transactions on Vehicular Technology
Additional Information:
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Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2202
Subjects:
ID Code:
162397
Deposited By:
Deposited On:
19 Nov 2021 12:09
Refereed?:
Yes
Published?:
In Press
Last Modified:
05 Dec 2021 08:35