Mobility aware of WDM-based CMO OFDM communication system
| Autor: | Sherine S. Jumaah, Ayad Atiyah Abdulkafi, Saad Mshhain Hardan, Saadi Hamad Thalij |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Orthogonal frequency-division multiplexing
Computer science business.industry GLIM 020206 networking & telecommunications 02 engineering and technology Ofdm communication system Condensed Matter Physics Atomic and Molecular Physics and Optics 020210 optoelectronics & photonics Wavelength-division multiplexing 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business Computer network |
| Zdroj: | Journal of Optical Communications. |
| ISSN: | 2191-6322 0173-4911 |
| DOI: | 10.1515/joc-2021-0103 |
| Popis: | The continued increase in several mobile applications forces to replace existing limited spectrum indoor radio frequency wireless connections with high-speed ones. Visible light communications (VLC) technology has gained prominence in the development of high data rate transmission for fifth-generation networks. In optical wireless communications, light-emitting diode (LED) transmitters are used in applications that desire mobility as LED divergence enables larger coverage. Since each VLC access point covers a small area, handovers of mobile users are inevitable. Wavelength division multiplexing (WDM) can be used in VLC systems to tackle the above issue and to meet the increasing demand for indoor connectivity with high bit rates. In this paper, a new system architecture for WDM with coded modulated optical in orthogonal frequency division multiplexing (OFDM) VLC system in conjunction with red, green, blue, and yellow (RGBY) LEDs is proposed to reduce the impact of random receiver orientation of indoor mobile users over VLC downlink channels and improves the system’s bit-error-rate (BER) performance. Simulation results show that the proposed method is not affected by the user’s mobility and hence it performs better than other approaches, in terms of BER for all scenarios and at all positions. This study reveals that using WDM-OFDM-VLC with RGBY LEDs to construct a VLC system is very promising. |
| Databáze: | OpenAIRE |
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