Open Access

ARTICLE

Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

by Mohammed S. M. Gismalla^1,2,3, Asrul I. Azmi^1,2, Mohd R. Salim^1,2, Farabi Iqbal^1,2, Mohammad F. L. Abdullah⁴, Mosab Hamdan^5,6, Muzaffar Hamzah^5,*, Abu Sahmah M. Supa’at^1,2

1 School of Electrical Engineering, Faculty of Engineering, Universiti Teknologi Malaysia, Skudai, 81310, Malaysia
2 Lightwave Communications Research Group (LCRG), Faculty of Electrical Engineering, Universiti Teknologi Malaysia (UTM), Skudai, Johor, Malaysia
3 Department of Electronics and Electrical Engineering, Faculty of Engineering, International University of Africa, Khartoum, 12223, Sudan
4 Department of Communication Engineering, Faculty of Electrical and Electronic Engineering Universiti Tun Hussein Onn Malaysia (UTHM), Parit Raja, Batu Pahat, 86400, Johor, Malaysia
5 Faculty of Computing and Informatics, Universiti Malaysia Sabah, Kota Kinabalu, 88400, Malaysia
6 Department of Computer Science, University of São Paulo, São Paulo, Brazil

* Corresponding Author: Muzaffar Hamzah. Email:

Computers, Materials & Continua 2023, 74(2), 3607-3625. https://doi.org/10.32604/cmc.2023.031192

Received 12 April 2022; Accepted 29 June 2022; Issue published 31 October 2022

Abstract

Visible light communication (VLC), which is a prominent emerging solution that complements the radio frequency (RF) technology, exhibits the potential to meet the demands of fifth-generation (5G) and beyond technologies. The random movement of mobile terminals in the indoor environment is a challenge in the VLC system. The model of optical attocells has a critical role in the uniform distribution and the quality of communication links in terms of received power and signal-to-noise ratio (SNR). As such, the optical attocells positions were optimized in this study with a developed try and error (TE) algorithm. The optimized optical attocells were examined and compared with previous models. This novel approach had successfully increased minimum received power from −1.29 to −0.225 dBm, along with enhanced SNR performance by 2.06 dB. The bit error rate (BER) was reduced to and by utilizing OOK-NRZ and BPSK modulation techniques, respectively. The optimized attocells positions displayed better uniform distribution, as both received power and SNR performances improved by 0.45 and 0.026, respectively. As the results of the proposed model are optimal, it is suitable for standard office and room model applications.

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Keywords

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