Power Control for Harmonic Utility in Non-Orthogonal Multiple Access based Visible Light Communications

TL;DR

This paper addresses power control in NOMA-based visible light communications, optimizing harmonic-rate utility to enhance network performance with a convex optimization approach validated through simulations.

Contribution

It introduces a novel power control method for NOMA-VLC systems that maximizes harmonic utility using convex optimization techniques.

Findings

Optimized power control improves harmonic utility in NOMA-VLC.

Convex transformation enables efficient solution of the power control problem.

Simulation results confirm the effectiveness of the proposed approach.

Abstract

Visible light communication is a promising technique in future networks due to its advantages of high data rate and licensed-free spectrum. In addition, non-orthogonal multiple access (NOMA) is considered as a candidate of multiple access schemes in 5G networks and beyond. In this paper, we study the power control problem in NOMA-based visible light communication. An optimization problem is formulated, where the objective is the harmonic-rate utility function. The optimal solution is achieved optimally by equivalently transforming the underlying problem into a convex problem. Simulation result is provided to validate performance of the proposed approach.