Optimization of intensities and locations of diffuse spots in indoor optical wireless communications

Mahmoud W. Eltokhey; Korany R. Mahmoud; Zabih Ghassemlooy; Salah S.A. Obayya

doi:10.1016/j.osn.2018.05.003

Optimization of intensities and locations of diffuse spots in indoor optical wireless communications

Mahmoud W. Eltokhey, Korany R. Mahmoud, Zabih Ghassemlooy, Salah S.A. Obayya

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6 Citations (Scopus)

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Abstract

In this paper, optimization of diffuse spots' parameters in indoor optical wireless communications (OWC) system is carried out by using the particle swarm optimization (PSO) algorithm. By simultaneously optimizing the diffusion spots' locations and intensities, we show an improvement in the signal-to-noise ratio (SNR) and the delay spread at the receivers, while considering both the background noise and the multipath dispersion. A comparison is made between different optimization scenarios, to illustrate the effect of varying the parameters that are being optimized. We show that the optimization of both intensities and locations of diffuse spots resulted in improvement up to 42% and 23% in the average delay spread and the average SNR, respectively, compared with the centrally located position of diffuse spots' distribution, with respect to the receivers' locations, which has a uniform distribution of power.

Original language	English
Pages (from-to)	177-183
Journal	Optical Switching and Networking
Volume	33
Early online date	1 Jun 2018
DOIs	https://doi.org/10.1016/j.osn.2018.05.003
Publication status	Published - 1 Jul 2019

Keywords

Optical wireless communications
Indoor communications
Optimization techniques
PSO

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10.1016/j.osn.2018.05.003

Manuscript- FinalAccepted author manuscript, 566 KBLicence: CC BY-NC-ND

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title = "Optimization of intensities and locations of diffuse spots in indoor optical wireless communications",

abstract = "In this paper, optimization of diffuse spots' parameters in indoor optical wireless communications (OWC) system is carried out by using the particle swarm optimization (PSO) algorithm. By simultaneously optimizing the diffusion spots' locations and intensities, we show an improvement in the signal-to-noise ratio (SNR) and the delay spread at the receivers, while considering both the background noise and the multipath dispersion. A comparison is made between different optimization scenarios, to illustrate the effect of varying the parameters that are being optimized. We show that the optimization of both intensities and locations of diffuse spots resulted in improvement up to 42\% and 23\% in the average delay spread and the average SNR, respectively, compared with the centrally located position of diffuse spots' distribution, with respect to the receivers' locations, which has a uniform distribution of power.",

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T1 - Optimization of intensities and locations of diffuse spots in indoor optical wireless communications

AU - Eltokhey, Mahmoud W.

AU - Mahmoud, Korany R.

AU - Ghassemlooy, Zabih

AU - Obayya, Salah S.A.

PY - 2019/7/1

Y1 - 2019/7/1

N2 - In this paper, optimization of diffuse spots' parameters in indoor optical wireless communications (OWC) system is carried out by using the particle swarm optimization (PSO) algorithm. By simultaneously optimizing the diffusion spots' locations and intensities, we show an improvement in the signal-to-noise ratio (SNR) and the delay spread at the receivers, while considering both the background noise and the multipath dispersion. A comparison is made between different optimization scenarios, to illustrate the effect of varying the parameters that are being optimized. We show that the optimization of both intensities and locations of diffuse spots resulted in improvement up to 42% and 23% in the average delay spread and the average SNR, respectively, compared with the centrally located position of diffuse spots' distribution, with respect to the receivers' locations, which has a uniform distribution of power.

AB - In this paper, optimization of diffuse spots' parameters in indoor optical wireless communications (OWC) system is carried out by using the particle swarm optimization (PSO) algorithm. By simultaneously optimizing the diffusion spots' locations and intensities, we show an improvement in the signal-to-noise ratio (SNR) and the delay spread at the receivers, while considering both the background noise and the multipath dispersion. A comparison is made between different optimization scenarios, to illustrate the effect of varying the parameters that are being optimized. We show that the optimization of both intensities and locations of diffuse spots resulted in improvement up to 42% and 23% in the average delay spread and the average SNR, respectively, compared with the centrally located position of diffuse spots' distribution, with respect to the receivers' locations, which has a uniform distribution of power.

KW - Optical wireless communications

KW - Indoor communications

KW - Optimization techniques

KW - PSO

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DO - 10.1016/j.osn.2018.05.003

M3 - Article

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VL - 33

SP - 177

EP - 183

JO - Optical Switching and Networking

JF - Optical Switching and Networking

ER -

Optimization of intensities and locations of diffuse spots in indoor optical wireless communications

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