f Enhancing Performance of Power Allocation for VLC Networks by Non-Orthogonal Multiple Access-MIMO
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Research Article |

Enhancing Performance of Power Allocation for VLC Networks by Non-Orthogonal Multiple Access-MIMO

Author(s): Natarajan C*, Janorious Hermia J, Amutha J, Geetha M, Madhavan R and Bhuvanesh A

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 12, Issue 2

Publisher : FOREX Publication

Published : 30 April 2024

e-ISSN : 2347-470X

Page(s) : 421-427

DOI: https://doi.org/10.37391/IJEER.120213

Abstract

Visible light communication, or VLC, networks emerged as a viable option for data access, particularly indoors. Their cost-effectiveness, protection to radio frequency (RF) intrusion, and extraordinarily high data speeds make them a desirable option for the upcoming generation of indoor networking technologies. In this paper, we propose the Exponential Gain Ratio Power Allocation (EGRPA), an effective and low-complex power splitting method, to increase the attainable sum amount in Multiple Input Multiple Output (MIMO) VLC downlink networks. Using numerical simulations, we assess the enactment of an indoor 2x2 MIMO VLC downlink model for several users. We also use Non-Orthogonal Multiple Access (NOMA) for enhancing spectrum efficacy. The usefulness and resilience of the suggested power splitting approach are established by the simulation outcomes, especially in scenarios with a high user count. In particular, the EGRPA power allocation algorithm shows a sum rate enhancement of more than 38.7%, 7.86%, and 7.04% for a system with three users when compared to the GRPA method, Normalized Gain Difference Power Allocation (NGDPA) method, and Logarithmic GRPA (NLGRPA) method, correspondingly.

Keywords: MIMO, power splitting, sum rate, visible light communication, NOMA, orthogonal frequency division multiplexing.




Natarajan C*, Department of Computer Science and Engineering, PSR Engineering College, Sivakasi, Tamil Nadu, India; Email: natarajan123c@outlook.com

Janorious Hermia J, Department of Artificial Intelligence and Data Science, PSR Engineering College, Sivakasi, Tamil Nadu, India; ; Email: janorioushermia1515j@gtmail.com

Amutha J, Department of Computer Science and Engineering, PSR Engineering College, Sivakasi, Tamil Nadu, India; Email: amutha43psr@gmail.com

Geetha M, Department of Electrical and Electronics Engineering, Sri Eswar College of Engineering, Coimbatore, Tamil Nadu, India; Email: geetha316eee@gmail.com

Madhavan R, Department of Computer Science and Engineering, PSN College of Engineering and Technology, Tirunelveli, Tamil Nadu, India; Email: madhavan369r@outlook.com

Bhuvanesh A, Department of Electrical and Electronics Engineering, PSN College of Engineering and Technology, Tirunelveli, Tamil Nadu, India; Email: bhuvanesh8641aa@gmail.com

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Natarajan C, Janorious Hermia J, Amutha J, Geetha M, Madhavan R and Bhuvanesh A (2024), Enhancing Performance of Power Allocation for VLC Networks by Non-Orthogonal Multiple Access-MIMO. IJEER 12(2), 421-427. DOI: 10.37391/IJEER.120213.