Open Access

ARTICLE

Performance Analysis of ACO-OFDM Visible Light Communication System Based on SCMA

Xiukai Ruan¹, Shahid Iqbal Awan^2,*

1 Institute of Intelligent Lock, Wenzhou University, Wenzhou, China
2 University of Poonch Rawalakot, Rawalakot, Pakistan

* Corresponding Author: Shahid Iqbal Awan. Email:

Journal on Internet of Things 2022, 4(4), 215-225. https://doi.org/10.32604/jiot.2022.038270

Received 05 November 2022; Accepted 06 December 2022; Issue published 18 July 2023

Abstract

A SCMA ACO-OFDM downlink visible light communication (VLC) system is proposed. Six users share four spectrum resources, four of which are 4 primary color LED lights. ACO-OFDM technology is used to convert the user’s sparse codebook mapped signal into a positive real value signal that can be carried on the light wave, which can realize high-speed parallel communication. Simulation verifies the feasibility of the system. At the same time, the channel model of visible light communication is constructed, and the signal-to-noise ratio(SNR) and channel gain of the visible light channel are systematically analyzed. Finally, the theoretical bit error rate formula using MPA decoding algorithm under different codebook constellation mapping points is given. Through simulation, it is verified that the theoretical bit error rate formula is basically consistent with the simulation bit error rate formula.

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Keywords

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