A multilayers adaptive ALACO-OFDM for spectral efficiency improvement using PSO algorithm in visible light communication systems
| Autor: | Junita Mohd Nordin, Aymen Abdalmunam Hameed, Montadar Abas, N. M. Nawawi, Anuar Mat Safar |
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| Rok vydání: | 2020 |
| Předmět: |
020210 optoelectronics & photonics
Orthogonal frequency-division multiplexing Computer science 0202 electrical engineering electronic engineering information engineering Electronic engineering Particle swarm optimization Visible light communication 020206 networking & telecommunications 02 engineering and technology Spectral efficiency Electrical and Electronic Engineering Condensed Matter Physics Atomic and Molecular Physics and Optics |
| Zdroj: | Journal of Optical Communications. |
| ISSN: | 2191-6322 0173-4911 |
| Popis: | In this paper, we propose a new adaptive layered asymmetrically-clipped optical orthogonal frequency division multiplexing (ALACO-OFDM) technique as a method to improve the spectral efficiency of optical system, especially visible light communication (VLC). Particle swarm optimisation (PSO)-based LACO-OFDM method is used for this purpose and the channel capacities are studied. Simulations using variable layers are carried out to validate the theoretical steps. The simulation results indicate that the ALACO-OFDM technique has significantly improve the spectral efficiency compared to previous techniques such as ACO-OFDM. Moreover, it is shown that channel capacities of different layers are significantly improved when electrical power is increased. |
| Databáze: | OpenAIRE |
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