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Optimizing Optical Attocells Positioning of Indoor Visible Light Communication System

Mohammed S. M. Gismalla1,2,3, Asrul I. Azmi1,2, Mohd R. Salim1,2, Farabi Iqbal1,2, Mohammad F. L. Abdullah4, Mosab Hamdan5,6, Muzaffar Hamzah5,*, Abu Sahmah M. Supa’at1,2

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: email

Computers, Materials & Continua 2023, 74(2), 3607-3625.


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.


Cite This Article

M. S. M. Gismalla, A. I. Azmi, M. R. Salim, F. Iqbal, M. F. L. Abdullah et al., "Optimizing optical attocells positioning of indoor visible light communication system," Computers, Materials & Continua, vol. 74, no.2, pp. 3607–3625, 2023.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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