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Novel User Pairing and Optimal Power Allocation for Single Carrier NOMA System

International Journal of Electrical and Electronics Engineering
© 2024 by SSRG - IJEEE Journal
Volume 11 Issue 6
Year of Publication : 2024
Authors : Najuk Parekh, Rutvij Joshi, Twinkle Doshi, Sorum Kotia
10.14445/23488379/IJEEE-V11I6P113
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How to Cite?

Najuk Parekh, Rutvij Joshi, Twinkle Doshi, Sorum Kotia, "Novel User Pairing and Optimal Power Allocation for Single Carrier NOMA System," SSRG International Journal of Electrical and Electronics Engineering, vol. 11,  no. 6, pp. 117-129, 2024. Crossref, https://doi.org/10.14445/23488379/IJEEE-V11I6P113

Abstract:

Non-Orthogonal Multiple Access (NOMA) appears to be a favorable technique for meeting the requirements of the next generation of wireless communication networks. This paper addresses the challenge of an abundant number of users and their power allocation, which is solved using a Genetic Algorithm (GA). Users are paired in groups of two and clusters of three in a single radio resource block using the proposed Novel User Pairing Algorithm (NUPA). The main goal is to maximize the capacity of the system under minimum rate constraints. The proposed NUPA NOMA system model is tested with different power allocation schemes. It is observed that the NUPA with GA system outperforms other conventional user pairing approaches and power allocation schemes such as fixed power allocation, fractional transmit power allocation, and orthogonal multiple access technique power allocation in terms of maximization of the capacity. Simulation results show that the NOMA system with a Novel User Pairing Algorithm and Genetic Algorithm-based power allocation obtains better results in terms of capacity.

Keywords:

5G, GA, Instantaneous CSI, Power allocation, User pairing.

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